| C | Celsius |
| C | candle |
| C | capacitance |
| C | cathode |
| C | center |
| C | centigrade |
| C | coefficient |
| C | complete |
| C | constant |
| C | core (metal) |
| C | cosine |
| C | cycle |
| C | hundred |
| C&C | command and control |
| C&C | communication and control |
| C&CS | command and control subsystem |
| C&D | communication and data |
| C&D | controls and displays |
| C&DH | command and data handling |
| C&DP | control and data processor |
| C&DS | command and data simulator |
| C&DSS | communication and data subsystem |
| C&I | communication and instrumentation |
| C&M | control and monitoring |
| C&P | contracts and pricing |
| C&T | communication and tracking |
| C&TS | communications and tracking system |
| C&TSS | communication and tracking subsystem |
| C&W | caution and warning |
| C-BARS | classified baseline accounting and reporting system |
| C-C | carbon-carbon |
| C-C | center-to-center |
| C-DEL | complete delivery |
| C-RFE | C-band RF electronics |
| C-to-C | computer-to-computer |
| C/A | coarse acquisition (navigation signal) |
| C/A | code standard positioning service |
| C/B | circuit breaker |
| C/C | combustion chamber |
| C/D | countdown |
| C/DPM | cost/design performance management |
| C/F | center frequency |
| C/O | changeout |
| C/O | checkout |
| C/O | contamination/overpressure |
| C/O | cutoff |
| C/P | cold plate |
| C/R | commutation rate |
| C/S | cost/schedule |
| C/S/P | cost/schedule/performance |
| C/SC | cost/schedule control |
| C/SCS | cost/schedule control system |
| C/SCSC | cost and schedule control system criteria |
| C/SCSC | cost/schedule control systems criteria |
| C/SR | cost/schedule report |
| C/SSR | cost/schedule status report |
| C/T | control and timing |
| C/W | carrier wave |
| C/W | caution and warning |
| C2 | command and control |
| C2I | command, control, and intelligence |
| C2S | command and control subsystem |
| C3 | command, control, and communications |
| C3I | command, control, communications, and intelligence |
| CA | carrier aircraft |
| CA | completion of assembly |
| CA | cone angle |
| CA | contract advice |
| CA | contract award |
| CA | corrective action |
| CA | cost account |
| CA | critical analysis |
| CAA | Civil Aeronautics Administration |
| CAA | composite audio amplifier |
| CAA | cost account authorization |
| CAALIS | computer-aided assembly-line inspection system |
| CAAT | computer-aided assembly tool |
| CAB | Civil Aeronautics Board |
| CAB | Civil Aviation Board |
| CAB | Corrective Action Board |
| CAB | Cost Audit Board |
| CAB | computer address bus |
| CACB | center aisle connector bracket |
| CACC | communications and configuration console |
| CAD | computer-aided design |
| CAD-OPS | computer-aided design costing for operations |
| CADAM | computer graphics augmented design and manufacturing |
| CADDS | computer-aided design and drafting system |
| CADE | controller/attitude direct electronics |
| CADFISS | computation and data flow integrated subsystem |
| CADS | command and data simulator |
| CADS | computer-aided design system |
| CADSI | communication and data systems integration |
| CADU | control and display unit |
| CAE | computer-aided engineering |
| CAE | corrective action engineer |
| CAFB | Chanute Air Force Base |
| CAI | computer-aided instruction |
| CAIT | computer-aided instruction terminal |
| CAIT | computer-aided instruction trainer |
| CAL | Cornell Aeronautical Laboratory |
| CAL | canister airlock |
| CAL | computer-aided logistics |
| CAL | contract advice letter |
| CALS | computer-aided acquisition and logistics support |
| CALS | computer-aided logistics system |
| CALST | Cornell Aeronautical Laboratory Shock Tunnel |
| CAM | Civil Aeronautics Manual |
| CAM | carrier aircraft modification |
| CAM | computer annunciation matrix |
| CAM | computer-aided manufacturing |
| CAM | content-addressable memory |
| CAM | cost account manager |
| CAMERA | control and monitoring equipment resource allocation |
| CAMP | common Ada missile package |
| CAMP | computer-aided message processing |
| CAN | certification analysis network |
| CAO | Cost Administration Office |
| CAP | capability assurance program |
| CAP | computer application program |
| CAP | contractor-acquired property |
| CAP | cost account package |
| CAP | cost account plan |
| CAP | crew activity plan |
| CAPRI | capacitance rate integrator |
| CAPS | common attitude pointing system |
| CAPS | crew activity planning system |
| CAPS | crew altitude protection suit |
| CAPS | crew altitude protection system |
| CAPSS | computer-aided planning and scheduling system |
| CAR | certification analysis requirements |
| CAR | certification approval request |
| CAR | configuration and acceptance review |
| CAR | contractual action request |
| CAR | corrective action record |
| CAR | corrective action report |
| CAR | corrective action request |
| CAR | customer acceptance review |
| CARB | Central Acquisition Review Board |
| CARDE | Canadian Armament Research and Development Establishment |
| CARID | customer acceptance report item disposition |
| CARID | customer acceptance review item disposition |
| CARM | customer accommodation requirement model |
| CARR | customer acceptance readiness review |
| CARR | customer accommodation requirement representative |
| CARS | configuration accounting and reporting system |
| CAS | CITE augmentation system |
| CAS | calibrated airspeed |
| CAS | command augmentation system |
| CAS | computer airspeed |
| CAS | configuration accounting system |
| CAS | cooperative application satellite |
| CAS | cost accounting standard |
| CAS | crew accommodation system |
| CAS-P | CAS pitch control mode |
| CAS-YR | CAS yaw roll control mode |
| CASB | Cost Accounting Standards Board |
| CASE | care application service element |
| CASE | computer-aided system engineering |
| CASE | computer-automated software engineering |
| CASES | control and structures experiments for space |
| CASO | cancellation addendum sales order |
| CASP | change assessment summary package |
| CASR | cost and schedule reporting system |
| CASS | CITE augmentation support system |
| CASS | consolidated automated support system |
| CAT | computer-aided test |
| CAT | control attenuator timer |
| CAT-2 | communications and tracking comprehensive analysis tool |
| CATS | change action tracking system |
| CATS | correspondence action tracking system |
| CAU | command acquisition unit |
| CAU | command activation unit |
| CAU | customer acquisition unit |
| CAWG | Customer Accommodation Working Group |
| CB | center of buoyancy |
| CB | circuit breaker |
| CB | coax (or coaxial) interface bracket |
| CB | control board |
| CBA | C-band transponder antenna |
| CBA | collective bargaining agreement |
| CBARS | classified baseline accounting and reporting system |
| CBB | contract budget baseline |
| CBC | change board commitment |
| CBC | complete blood count |
| CBE | connector bracket experiment |
| CBIL | common and bulk items list |
| CBO | Congressional Budget Office |
| CBP | connector bracket power |
| CBR | California bearing ratio |
| CBS | connector bracket signal |
| CBSA | cargo bay stowage assembly |
| CBT | computer-based training |
| CBV | cabin bleed valve |
| CBW | constant bandwidth |
| CBX | C-band transponder |
| CBrF3 | bromotrifluoromethane (fire-extinguishing material) |
| CC | carbon-carbon |
| CC | channel controller |
| CC | closing coil |
| CC | color code |
| CC | commercial control |
| CC | communications control |
| CC | compatibility change |
| CC | computer center |
| CC | contamination control |
| CC | contract completion |
| CC | control center |
| CC | corner cube |
| CC | cost center |
| CC | crew certified |
| CC | crew compartment |
| CCA | communications carrier assembly |
| CCA | contract change authority |
| CCA | contract change authorization |
| CCAFS | Cape Canaveral Air Force Station |
| CCATS | command communications and telemetry system |
| CCB | Change Control Board |
| CCB | Configuration Control Board |
| CCBD | Configuration Control Board directive |
| CCBD | Control Change Board directive |
| CCC | Consolidated Controls Corporation |
| CCC | central computer complex |
| CCC | command control console |
| CCC | communication control center |
| CCC | complex control center |
| CCC | computer checkout console |
| CCC | contaminant control cartridge |
| CCC | controller checkout console |
| CCC | coordinate conversion computer |
| CCCD | crew compartment configuration drawing |
| CCD | central command decoder |
| CCD | charge-coupled device |
| CCD | checkout command decoder |
| CCD | constants change display |
| CCDR | contractor critical design review |
| CCE | computer command engineer |
| CCE | continuous control evaluator |
| CCF | central computer facility |
| CCF | converter compressor facility |
| CCFF | Cape Canaveral Forecast Facility |
| CCFT | controlled current feedback transformer |
| CCHS | crew compartment heat shield |
| CCIM | command computer input multiplexer |
| CCIR | International Radio Consultative Committee |
| CCL | closed-circuit loop |
| CCL | commonality candidate list |
| CCL | critical characteristics list |
| CCM | controlled carrier modulation |
| CCM | counter-countermeasure |
| CCM | crew/cargo module |
| CCME | contract change mass estimate |
| CCMS | checkout, control, and monitor subsystem (LPS) |
| CCMS | command, control, and monitor system |
| CCMTA | Cape Canaveral Missile Test Annex |
| CCN | contract change negotiation |
| CCN | contract change notice |
| CCN | contract change notification |
| CCO | contract change order |
| CCO | current-controlled oscillator |
| CCO | customer contracting officer |
| CCOH | corrosive contaminants, oxygen, and humidity |
| CCP | Change Control Panel |
| CCP | Configuration Control Panel |
| CCP | center console panel |
| CCP | change control package |
| CCP | commercial change proposal |
| CCP | computer control panel |
| CCP | configuration change point |
| CCP | configuration control phase |
| CCP | configuration control point |
| CCP | contamination control plan |
| CCP | contract change proposal |
| CCP | controlled components program |
| CCP | corrosion control plan |
| CCP | cost control program |
| CCPDSR | common center processing and display system replacement |
| CCPDSR | communications center processing and display system |
| CCR | cargo compatibility review |
| CCR | configuration control record |
| CCR | contract change record |
| CCR | contract change request |
| CCR | contractor change review |
| CCR | control center rack |
| CCRA | Cape Canaveral reference atmosphere |
| CCRF | consolidated communication recording facility |
| CCS | central computer and sequencer |
| CCS | central control section |
| CCS | central control station |
| CCS | command and communication system |
| CCS | complex control set |
| CCS | computer core segment |
| CCS | console communication system |
| CCS | contamination control system |
| CCS | contract control system |
| CCSD | Chrysler Corporation Space Division |
| CCSD | Collins Communications Systems Division |
| CCSDS | Consultative Committee for Space Data Systems |
| CCSR | carbon-carbon survivable radiator |
| CCSR | crew compartment stowage review |
| CCT | command/control transmitter |
| CCT | computer-compatible tape |
| CCTCF | communication circuit technical control facility |
| CCTV | closed-circuit television |
| CCU | camera control unit |
| CCU | central control unit |
| CCU | communications carrier umbilical |
| CCU | communications carrier unit |
| CCU | coupling control unit |
| CCU | crew communications unit |
| CCU | crew compartment umbilical |
| CCU | crewman communications umbilical |
| CCV | chamber coolant valve |
| CCVA | chamber coolant valve actuator |
| CCW | counterclockwise |
| CCZ | command and control zone |
| CD | call director |
| CD | candela (luminous intensity) |
| CD | coefficient of drag |
| CD | coin dimple |
| CD | cold-drawn |
| CD | command decoder MDM |
| CD | components demonstration |
| CD | countdown |
| CD | current density |
| CD&SC | Communications, Distribution, and Switching Center |
| CD/V | concept definition and validation |
| CDA | command and data acquisition |
| CDA | critical design audit |
| CDAS | configuration design analysis simulation |
| CDAS | configuration development analysis and simulation |
| CDAS | configurations development analysis simulation |
| CDAS | core design analysis simulation |
| CDB | central data buffer |
| CDB | command data base |
| CDB | computer data bus |
| CDBFR | common data buffer |
| CDC | Collins Defense Communications |
| CDC | Computer Development Center (NASA) |
| CDC | Control Data Corporation |
| CDC | classified document control |
| CDC | command and data handling console |
| CDC | confined detonating cord |
| CDC | countdown clock |
| CDCD | Collins Defense Communications Division |
| CDCD | cargo design control drawing |
| CDCM | coupling display, manual control IMU |
| CDCO | coupling display, manual control optics |
| CDD | command decoding and distribution |
| CDD | common data dictionary |
| CDDB | common diagnostic data base |
| CDDT | countdown demonstration test |
| CDF | cable distribution frame |
| CDF | central data facility |
| CDF | circuit design fabrication |
| CDF | combined data file |
| CDF | confined detonating fuse |
| CDF | cool-down facility |
| CDF&TDS | circuit design, fabrication, and test data |
| CDG | Concept Development Group |
| CDH | constant delta height |
| CDH | constant differential height |
| CDI | contract definition instruction |
| CDI | course deviation indicator |
| CDID | contract data item description |
| CDM | communications data manager |
| CDM | configuration design module |
| CDMA | code division multiple access |
| CDMS | command and data management system (subsystem) |
| CDMS | contractor data management system (VAFB) |
| CDN | CDR discrepancy notice |
| CDNR | CDR discrepancy notice record |
| CDOM | chief draftsman office memorandum |
| CDP | command data processor |
| CDP | computational data processing |
| CDP | computer data processing |
| CDP | confidence development program |
| CDP | critical design parameter |
| CDPA | classified data preparation area |
| CDPIS | command data processing and instrumentation system |
| CDQ | certificate of qualification |
| CDQR | critical design and qualification review |
| CDR | cleaning, decontamination request |
| CDR | command destruct receiver |
| CDR | conceptual design review |
| CDR | configuration design review |
| CDR | contract data requirements |
| CDR | critical design review |
| CDRL | contract data requirements list |
| CDRR | contract documentation requirements record |
| CDRS | contract data requirements schedule |
| CDS | cavity digitizing system |
| CDS | central data subsystem (LPS) |
| CDS | central data system |
| CDS | closeout door system |
| CDS | cold-drawn steel |
| CDS | computer design and simulation |
| CDS | configuration design system |
| CDS | configuration development system |
| CDS | consolidated direct support |
| CDS | control and display system |
| CDS | control data system |
| CDS | controller select direction |
| CDS | coupling display system |
| CDSC | Communication Distribution and Switching Center |
| CDSC | coupling-display scanning-telescope manual control |
| CDSF | commercially developed space facility |
| CDSL | Computer Data System Laboratory |
| CDSR | contract data status report |
| CDSR | cost data summary report |
| CDT | central daylight time |
| CDT | command descriptor table |
| CDT | compressed data tape |
| CDT | configuration data table |
| CDT | countdown time |
| CDU | CRT display unit |
| CDU | computer display unit |
| CDU | coupling data unit |
| CDU | coupling display unit |
| CDUM | coupling display unit IMU |
| CDUO | coupling display unit optics |
| CDW | command data word |
| CDW | computer data word |
| CDW | control data word |
| CE | Corps of Engineers |
| CE | cargo element |
| CE | change engineer |
| CE | change evaluation |
| CE | civil engineering |
| CE | control element |
| CE | cost element |
| CE | crew equipment |
| CE | current expendable |
| CE/CK | computer entry/control keyboard |
| CEA | Computer Engineering Associates |
| CEA | circular error average |
| CEA | control electronics assembly |
| CEC | Civil Engineering Corps |
| CEC | Consolidated Electrodynamics Corporation |
| CEC | Consolidated Electronics Corporation |
| CEC | control electronics container |
| CEC | control encoder coupler |
| CECP | compatibility engineering change proposal |
| CEDC | cyclic error detection code |
| CEEP | composite entry evaluation program |
| CEF | comsec equipment facility |
| CEI | configuration end item |
| CEI | contract end item |
| CEIAC | Coastal Engineering Information Analysis Center |
| CEIS | combined elements and integrated systems |
| CEIS | contract end item specification |
| CEIT | cargo equipment integrated test |
| CEIT | crew equipment integration test |
| CEIT | crew equipment interface test |
| CELSS | controlled ecological life support system |
| CELV | commercial expendable launch vehicle |
| CEM | cost estimating method |
| CEMF | counterelectromotive force |
| CEO | chief engineer's office |
| CEO | chief executive officer |
| CEP | circle of equal probability |
| CEP | circular error probability |
| CEP | circular error probable |
| CEP | comsec equipment program |
| CEP | configuration evaluation plan |
| CEPS | CITS expert parameter system |
| CEQ | Council on Environmental Quality |
| CER | cost estimating relationship |
| CES | combined Earth sensor |
| CES | concept evaluation study |
| CES | conical Earth sensor |
| CES | control electronics section |
| CES | crew escape system |
| CESA | Canadian Engineering Standards Association |
| CET | clutter equivalent target |
| CET | combined element test |
| CETA | crew and equipment translation aid |
| CETF | Critical Evaluation Task Force |
| CEU | control electronics unit |
| CF | carrier frequency |
| CF | center forward |
| CF | center of flotation |
| CF | centrifugal force |
| CF | completion form |
| CF | consequence of failure |
| CF | corner fitting |
| CFAE | contractor-furnished airborne equipment |
| CFAR | constant false alarm rate |
| CFC | central fire control |
| CFC | chlorofluorocarbon |
| CFD | computational fluid dynamics |
| CFD | converter frequency to dc voltage |
| CFD | cumulative frequency distribution |
| CFE | central framework executive |
| CFE | consolidated front end |
| CFE | contractor-furnished equipment |
| CFE | critical function equipment |
| CFE | customer-furnished equipment |
| CFES | continuous flow electrophoresis system |
| CFI | card format identifier |
| CFM | customer-furnished material |
| CFP | conceptual flight profile |
| CFR | Code of Federal Regulations |
| CFRP | carbon-fiber-reinforced plastic |
| CFSD | critical-function sequence diagram |
| CFSR | contract fund status report |
| CFSR | contract funds status review |
| CFSTI | Clearinghouse for Scientific and Technical Information |
| CFT | cross-functional team |
| CFY | company fiscal year |
| CGAD | Collins General Aviation Division |
| CGAU | cabin gas analysis unit |
| CGC | command guidance computer |
| CGF | command generation function |
| CGL | comprehensive general liability |
| CGP | central grounding point |
| CGSS | cryogenic gas storage system |
| CH | case hardening |
| CH | control house |
| CH/SL | certified hardware/software list |
| CH4 | methane |
| CHARM | composite high-altitude radiation model |
| CHI | computer-to-human interface |
| CHIP | College Hire Indoctrination Program |
| CHL | certified hardware list |
| CHR | Cooper-Harper rating |
| CHROMEX | chromosome and plant cell division in space |
| CHSF | cargo hydrazine service facility |
| CHW | command header word |
| CHX | cabin heat exchanger |
| CHX | condensing heat exchanger |
| CI | cast iron |
| CI | center of impact |
| CI | certification inspection |
| CI | color interior film |
| CI | configuration inspection |
| CI | configuration item |
| CI | continuous interlock |
| CI | contract initiation |
| CI | course invalid |
| CI | crew interface |
| CIA | Central Intelligence Agency |
| CIA | configuration identification accounting |
| CIA | control interface assembly |
| CIA | controller interface assembly |
| CIAP | climatic impact assessment program |
| CIB | Change Impact Board |
| CIB | Change Implementation Board |
| CIB | control interface block |
| CIC | cargo integration contractor |
| CIC | command interface control |
| CIC | control and information center |
| CIC | critical item consolidation |
| CICC | cargo integration control center |
| CICCR | configuration information control center requirement |
| CICU | communication interface control unit |
| CICU | computer interface conditioning unit |
| CID | cable interconnect diagram |
| CID | charge injection device |
| CID | computer interface device |
| CIDL | configuration item data list |
| CIDR | critical intermediate design review |
| CIDSC | contractor in-house data support capability |
| CIE | cargo integration equipment |
| CIE | communications interface equipment |
| CIF | Central Information Facility (AMR) |
| CIF | central instrumentation facility |
| CIG | Cable Integrity Group |
| CIG | Communications and Interface Group |
| CIG | Connector Integration Group |
| CIG | Connector Integrity Group |
| CIG | compound interlace grating |
| CII | change installation instruction |
| CII | configuration item identifier |
| CIJB | cradle interface junction box |
| CIL | critical items list |
| CIM | computer input multiplexer |
| CIM | computer-integrated manufacturing |
| CIMS | consolidated information management system |
| CIN | center information network |
| CIN | change identification number |
| CIN | change identifier number |
| CINC | commander-in-chief |
| CINCAD | commander-in-chief, Air Defense |
| CINCNET | commander-in-chief network |
| CINCNORAD | commander-in-chief, North American Aerospace |
| CINCSAC | commander-in-chief, Strategic Air Command |
| CINCSBL | commander-in-chief, Space-Based Laser |
| CIP | Class 1 Integration Plan |
| CIP | cast-iron pipe |
| CIP | change implementation plan |
| CIP | communications interface processor |
| CIP | control and interface panel |
| CIR | cargo integration review |
| CIR | configuration inspection report |
| CIR | critical item report |
| CIRD | cargo integration review dry run |
| CIRHS | critical items and residual hazards list |
| CIRM | celestial infrared mapping |
| CIRM | celestial infrared measurements |
| CIRRIS | cryogenic infrared radiance instrumentation for Shuttle |
| CIS | cargo integration schedule |
| CIS | central integration site |
| CIS | change impact summary |
| CIS | communication interface system |
| CIS | contractor's information submittal |
| CISS | Centaur integrated support structure |
| CIT | CAP initialization tape |
| CIT | California Institute of Technology |
| CIT | critical item tag |
| CITE | cargo integration test equipment |
| CITS | central integrated test system |
| CIU | communication interface unit |
| CIU | computer interface unit |
| CIU | controller interface unit |
| CIVT | cargo interface verification test |
| CIVU | cargo integration verification unit |
| CIWG | Cargo Integration Working Group |
| CKRA | Cape Kennedy reference atmosphere |
| CL | centerline |
| CL | closed loop |
| CL | coefficient of lift |
| CL | confidence level |
| CLAES | cryogenic limb array etalon spectrometer |
| CLAS | computerized loads analysis system |
| CLC | Computer Liaison Committee |
| CLC | change letter control |
| CLF | Clear Lake facility |
| CLF | controller, load forward |
| CLIN | contract line item number |
| CLIP | combined laser instrumentation package |
| CLIPS | C-language inferencing for production systems |
| CLM | care logic module |
| CLM | circumlunar mission |
| CLMC | central logistics management center |
| CLOT | combined loads orbiter test |
| CLOUDSAT | cloud cover statistical analysis program |
| CLRB | Cost Limit Review Board |
| CLS | contingency landing site |
| CLSO | contingency landing support officer |
| CM | cargo manager |
| CM | center of mass |
| CM | change management |
| CM | circular mil |
| CM | command module |
| CM | configuration management |
| CM | configuration monitor |
| CM | consumable management |
| CM | control mode |
| CM | control monitor |
| CM | countermeasure |
| CM | crew module |
| CM&S | communications maintenance and storage |
| CMA | configuration management accounting |
| CMACS | central monitor and control system |
| CMAG | cruise missile advanced guidance |
| CMAO | contract management assistance officer |
| CMAR | configuration management action request |
| CMAT | compatible material |
| CMB | Configuration Management Board |
| CMC | central maintenance computer |
| CMC | command module computer |
| CMC | crew module computer |
| CMCS | centralized maintenance computer system |
| CMD | controller, main display |
| CMDB | configuration management data base |
| CMDM | control multiplexer/demultiplexer |
| CMDS | configuration management data system |
| CME | commercial measuring equipment |
| CMF | controller, motor, forward |
| CMG | control moment gyro |
| CMIF | common module integration facility |
| CMIS | common module integration simulator |
| CMIS | computer management information system |
| CMIS | configuration management information system |
| CMIS | control monitor isolation subsystem |
| CML | commands and measurement list |
| CMM | CM Manual |
| CMM | condition-monitored maintenance |
| CMM | controller, motor, midbody |
| CMM | coordinate measurement machine |
| CMN | contract master network |
| CMO | Configuration Management Office |
| CMO | class mix option |
| CMOS | complementary metal oxide semiconductor |
| CMOS/SOS | complementary metal oxide semiconductor/silicon |
| CMP | Configuration Management Panel |
| CMP | configuration management plan |
| CMPP | configuration management program plan |
| CMR | center materials representative |
| CMR | common mode rejection |
| CMR | configuration management representative |
| CMR | contractor management review |
| CMRB | Contractor Material Review Board |
| CMRP | configuration management requirements plan |
| CMRR | common mode rejection ratio |
| CMRS | configuration management requirements standard |
| CMS | change management system |
| CMS | code management system |
| CMS | component mode synthesis |
| CMS | configuration management system |
| CMS | contract master schedule |
| CMS | conventional monitoring system |
| CMS-2 | Cambridge Monitoring System (IBM computer program) |
| CMSI | command monitor system interface |
| CMT | critical military target |
| CMTS | computerized maintenance test system |
| CMU | control and monitor unit |
| CMV | common mode voltage |
| CMVAS | configuration management verification accounting system |
| CMW | compartmented mode work station |
| CN | change notice |
| CNC | computer numerical control |
| CNC | computer numerically controlled |
| CND | cannot duplicate |
| CNES | Centre National D'Etudes Spatiales (French National Space Studies Center) |
| CNRL | Communications and Navigation Research Laboratory |
| CNWDI | critical nuclear weapons design information |
| CO | Cargo Operations (KSC directorate) |
| CO | carbon monoxide |
| CO | change order |
| CO | contracting officer |
| CO*A | cesium-dideuterium-arsenate |
| CO2 | carbon dioxide |
| COA | center operations area |
| COAS | crewman optical alignment sight |
| COB | communications office building |
| COBE | Cosmic Background Explorer |
| COBOL | common business-oriented language |
| COC | certificate of completion |
| COC | close-open-close |
| COCOMO | constructive cost model |
| COD | Center Operations Directorate (JSC) |
| COD | crack opening displacement |
| COF | construction of facilities |
| COF | cost of facilities |
| COFAC | construction facility |
| COFI | checkout and fault isolation |
| COFR | certificate of flight readiness |
| COFR | certification of flight readiness |
| COFW | certificate of flight worthiness |
| COGMAN | center of gravity of payload manifest |
| COI | conflict of interest |
| COIL | chemical oxygen-iodine laser |
| COIM | checkout interpreter (software) module |
| COL | checkout language |
| COLA | cost-of-living adjustment |
| COM | computer output microfiche |
| COM | computer output microfilm |
| COM-M | common mode |
| COMAS | combined orbital maneuvering and abort system |
| COMAT | compatibility of materials |
| COMP | computation of rendezvous targeting |
| COMPOOL | common data pool |
| COMPSIM | concept mission performance simulation |
| COMSAT | communications satellite |
| CONAD | CONUS defense |
| CONUS | continental United States |
| COP | central operations program |
| COP | co-orbiting platform |
| COP | coefficients of performance |
| COP | combined operations plan |
| COP | contingency operations plan |
| COQ | certificate of qualification |
| COR | contracting officer representative |
| COR | contractors operations review |
| CORA | coherent optical radar amplifier |
| CORE | common operational research equipment |
| COS | carry-on oxygen system |
| COS | checkout station |
| COS | console operating system |
| COSATI | Committee on Scientific and Technical Information |
| COSI | closeout system installation |
| COSM | checkout servicing and maintenance |
| COSMIC | Computer Software Management and Information Center |
| COSPAC | cost/schedule planning and control |
| COSTA | cost accounting (code) |
| COT | critical optical technology |
| COTR | contracting officer's technical representative |
| COTS | commercial off the shelf |
| COV | cutoff value |
| CP | Cargo Projects Office (KSC) |
| CP | candlepower |
| CP | center of pressure |
| CP | checkpoint |
| CP | chemically pure |
| CP | circular pitch |
| CP | cold plate |
| CP | cold-punched |
| CP | communication processor |
| CP | computer program |
| CP | console processor |
| CP | control panel |
| CP | control point |
| CP | coordinated procurement |
| CP-PCO | Cargo Projects Program Control Office |
| CPA | change proposal analyst |
| CPA | contingency planning aid |
| CPA | critical path analysis |
| CPAF | cost plus award fee |
| CPAR | controlled parts approval |
| CPC | Cargo Processing Contract (contractor) |
| CPC | central planning center |
| CPC | characteristic properties code |
| CPC | computer program component |
| CPC | control pressure conditioner |
| CPCB | Crew Procedures Control Board |
| CPCEI | computer program contract end item |
| CPCI | computer program change instruction |
| CPCI | computer program configuration item |
| CPCR | computer program change request |
| CPCR | crew procedure change request (Form 482) |
| CPD | Crew Procedures Division |
| CPD | crew passive dosimeter |
| CPDDS | computer program detail design specification |
| CPDP | computer program development plan |
| CPDP | computer program development program |
| CPDR | contractor's preliminary design review |
| CPDS | computer program design specification |
| CPDS | computer program detailed specification |
| CPDS | computer program development specification |
| CPDS | crew procedures documentation system |
| CPE | chief program engineer |
| CPE | chief project engineer |
| CPEI | computer program end item |
| CPES | crew procedures evaluator simulator |
| CPF | cargo processing facility |
| CPF | central processing facility |
| CPF | controller, power, forward |
| CPF | cost per flight |
| CPFF | cost plus fixed fee |
| CPFF/IF | cost plus fixed fee/incentive fee |
| CPG | Change Planning Group |
| CPG | coarse-pointing gimbal |
| CPI | consumer price index |
| CPI | crosspointer indicator |
| CPIC | Computer Program Integration Contract (contractor) |
| CPIF | cost plus incentive fee |
| CPIF/AF | cost plus incentive fee/award fee |
| CPM | cargo propulsion module |
| CPM | cell performance monitor |
| CPM | change proposal manager |
| CPM | computer program module |
| CPM | cost and performance measurement |
| CPM | critical path method |
| CPMP | crew procedures management plan |
| CPMP | crew products management plan |
| CPO | Central Planning Office (MSFC) |
| CPPS | computer program product specification |
| CPR | cost performance report |
| CPR | critical problem report |
| CPS | coarse pointing system |
| CPS | critical path schedule |
| CPSD | cross-power spectral density |
| CPSE | common payload support equipment |
| CPSR | contractor's procurement system review |
| CPSS | cold plate support structure |
| CPSS | critical phase system software |
| CPT | cargo processing technician |
| CPT | computer program tape |
| CPTA | core propulsion test article |
| CPU | central processing unit |
| CPU | command processor unit |
| CPU | computer printer unit |
| CPU | computer processing unit |
| CPV | common pressure vessel |
| CQDR | critical qualification design review |
| CQIM | configuration and quality information management |
| CR | card reader |
| CR | cathode ray |
| CR | certification request |
| CR | certification requirement |
| CR | change record |
| CR | change request |
| CR | cold-rolled |
| CR | communication and radar |
| CR | configuration review |
| CR | contractor's response |
| CR | control room |
| CR | customer's request |
| CRALT | CNES radar altimeter |
| CRAS | cost reduction alternative study |
| CRB | Change Review Board |
| CRB | Concept Review Board |
| CRB | Configuration Review Board |
| CRB | Correspondence Review Board |
| CRC | contractor-recommended code |
| CRC | cost reduction curve |
| CRC | cyclic redundancy check |
| CRD | change request disposition |
| CRD | cost reporting document |
| CRDP | certification review data package |
| CRDP | computer resource development plan |
| CRERS | crew rescue and equipment retrieval system |
| CRES | corrosion resistance steel |
| CRG | Change Review Group |
| CRG | Correspondence Review Group |
| CRI | certification requirements index |
| CRIS | calibration recall and information system |
| CRIS | connector removal and installation sheet |
| CRISD | computer resource integration support document |
| CRISD | computer resources integrated support document |
| CRISP | computer resources integrated support plan |
| CRN | cable routing notation |
| CRN | change review notice |
| CRN | contract revision number |
| CRO | cathode-ray oscilloscope |
| CRP | configuration requirements processing |
| CRPL | Cosmic Ray Physics Laboratory |
| CRR | cargo compatibility review |
| CRR | cargo readiness review |
| CRR | computer run report |
| CRR | critical requirements review |
| CRRES | combined release and radiation effects satellite |
| CRS | Congressional Research Service |
| CRS | cold-rolled steel |
| CRS | computer resources support |
| CRS | crew rescue system |
| CRSI | ceramic reusable surface insulation |
| CRT | cathode-ray tube |
| CRT | computer response time |
| CRTU | cryogenic radiator test unit |
| CRW | control read/write |
| CS | Spacelab Operations Directorate |
| CS | carbon steel |
| CS | cast steel |
| CS | center section |
| CS | change status |
| CS | checkout station |
| CS | common set |
| CS | communications system (subsystem) |
| CS | consumables status |
| CS | contractor share of variance from target cost |
| CS | control segment |
| CS | core segment |
| CS | crew simulator |
| CS | crew station |
| CS | cross-strapping |
| CS | current sensor |
| CSA | contract specification amendment |
| CSA | contractor support area |
| CSA | cyclic strain attenuator |
| CSAM | crinkled, single aluminized Mylar |
| CSAP | Control System Analysis Program |
| CSAT | combined systems acceptance test |
| CSB | Change Schedule Board |
| CSB | closely spaced basing |
| CSB | complex support building |
| CSC | Computer Sciences Corporation |
| CSC | computer software component |
| CSC | computer software configuration |
| CSC | conical-shaped charge |
| CSC | contingency support center (CCAFS) |
| CSC | cosecant computing amplifier |
| CSC | cost, schedule, and control |
| CSCB | contractor's summary cost breakdown |
| CSCD | control system command decoder |
| CSCI | computer software configuration item |
| CSCI | configuration software computer item |
| CSCS | central security control system |
| CSCSAT | commercial synchronous communication satellite |
| CSD | Chemical Systems Division |
| CSD | Crew Systems Division |
| CSD | computer system director |
| CSD | contract start date |
| CSD | control system development |
| CSDD | Control Systems Development Division (JSC) |
| CSDF | central source data file |
| CSDL | Charles Stark Draper Laboratory (MIT) |
| CSDM | Computer System Diagnostic Manual |
| CSDT | computer software data tape |
| CSE | common support equipment |
| CSE | communications systems engineer |
| CSE | computer support equipment |
| CSE | configuration switching equipment |
| CSE | cryostat servicing equipment |
| CSF | central supply facility |
| CSF | cost sensitivity factor |
| CSF | crew storage facility |
| CSFT | combined subsystem functional test |
| CSG | Concept Synthesis Group |
| CSI | coelliptic sequence initiation |
| CSI | control and structural integrity |
| CSI | control servo input |
| CSI | crew software interface |
| CSI | customer source inspection |
| CSIR | Council of Scientific and Industrial Research |
| CSIR | computer software integration review |
| CSIR | computer systems (hardware/software) integration review |
| CSIT | CAP system integration test |
| CSIU | core segment interface unit |
| CSL | command signal limiter |
| CSL | computer status light |
| CSL | critical sequence list |
| CSM | Cargo System Manual |
| CSM | command and service module |
| CSM | command service module |
| CSM | common support module |
| CSM | computer status matrix |
| CSMA/CD/TS | carrier sense multiple access/collision dlot |
| CSMP | continuous system modeling program |
| CSMP | control system modeling program |
| CSN | customer source number |
| CSO | Complex Safety Office |
| CSO | closely spaced object |
| CSOC | Consolidated Space Operations Center |
| CSOC | Consolidated Support Operations Center |
| CSOM | Computer System Operator's Manual |
| CSOP | crew systems operating procedure |
| CSP | certified special processor |
| CSPF | critical single-point failure |
| CSPL | certified special processor list |
| CSPO | Control Systems Procurement Office |
| CSPU | core segment processing unit |
| CSR | certification status report |
| CSR | check signal return |
| CSR | check status register |
| CSR | check status report |
| CSR | contract status report |
| CSR | cost, schedule, and risk |
| CSR | crew station review |
| CSRP | Computer and Software Review Panel |
| CSS | computer subsystem |
| CSS | control stick steering |
| CSS | core segment simulator |
| CSS | crew safety system |
| CSSE | control system simulation equipment |
| CSSR | cost, schedule status report |
| CST | capsule systems test |
| CST | central standard time |
| CST | combined systems test |
| CST | complex safety technician |
| CST | contract supplemental tooling |
| CST | crew software trainer |
| CST | crew station trainer |
| CST | crew systems trainer (one-g trainer) |
| CSTA | crew software training aid |
| CSTAR | continuous stellar-tracking attitude reference |
| CSTC | Consolidated Space Test Center |
| CSTS | cryogenic storage and transfer system |
| CSTU | combined systems test unit |
| CSU | central switching unit |
| CT | center tap |
| CT | central time |
| CT | compact tension |
| CT | crawler-transporter |
| CT | current transformer |
| CTA | command and telemetry assembly |
| CTA | controlled thrust assembly |
| CTC | camera, timing, and control |
| CTC | chief test conductor |
| CTCI | contract technical compliance inspection |
| CTCP | configuration test change period |
| CTCS | central thermal control system |
| CTDU | cross-link transponder data unit |
| CTE | central timing equipment |
| CTE | coefficient of thermal expansion |
| CTF | commit to flight |
| CTG | Central Training Group |
| CTG | commonality task group |
| CTI | critical transportation item |
| CTIS | crawler-transporter intercom system |
| CTL | Canoga Test Laboratory |
| CTL | Component Test Laboratory (NASA) |
| CTL | combat training launch |
| CTL | controller tape location |
| CTL | critical to launch |
| CTM | contract technical manager |
| CTM | crystalline transitional material |
| CTN | Canton Island |
| CTN | certification test network |
| CTP | communications timing procedure |
| CTP | cyclic time processor |
| CTPD | Crew Training and Procedures Division (JSC) |
| CTR | certification test requirement |
| CTR | certification test review |
| CTR | contract technical representative |
| CTRS | component test requirements specification |
| CTS | Canadian technology satellite |
| CTS | change tracking system |
| CTS | command and telemetry subsystem |
| CTS | communications and tracking system |
| CTS | communications technology satellite |
| CTS | computer test set |
| CTS | computerized training system |
| CTS | console test set |
| CTS | contractor technical service |
| CTS | coordinate transformation system |
| CTT | command transfer tape |
| CTU | central timing unit |
| CTU | command and telemetry unit |
| CTU | command telemetry unit |
| CTV | compatibility test van |
| CU | control unit |
| CU | crystal unit |
| CUB | Commonality Usage Board |
| CUC | computer usage control |
| CUDS | cumulative data statistics |
| CUE | command uplink electronics |
| CUE | command use equipment |
| CUE | common usage equipment |
| CUE | communication unit executor |
| CUF | cross-utilization file |
| CUI | common usage item |
| CUI | common user interface |
| CUIL | common usage item list |
| CUL | common use list |
| CUP | commonality usage proposal |
| CUT | coordinated universal time |
| CV | Computervision |
| CV | Computervision (computer-aided design and drafting |
| CV | Deployable Payloads Operation (KSC CO directorate) |
| CV | carrier vehicle |
| CV | check valve |
| CV | coefficient of variation |
| CV | computer vision |
| CV | configuration verification |
| CV | conventional vehicle |
| CV | core vehicle |
| CV | cryptovariable |
| CVA | Convair Astronautics |
| CVAD | converter voltage, ac to dc |
| CVAS | configuration verification accounting system |
| CVD | chemical vapor deposition |
| CVDA | converter voltage discrete, ac |
| CVE | complete vehicle erector |
| CVF | circular variable filter |
| CVI | carbon vapor impregnation |
| CVI | chemical vapor infiltration |
| CVI | configuration verification inspection |
| CVR | change verification record |
| CVR | configuration verification review |
| CVRD | converter variable resistance to dc voltage |
| CVSD | continuous variable slope data |
| CVT | communications vector table |
| CVT | concept verification testing |
| CW | caution and warning |
| CW | clockwise |
| CW | command word |
| CW | continuous wave |
| CW | continuous waveform |
| CWA | caution and warning annunciator |
| CWA | clean work area |
| CWA | controlled work area |
| CWBS | contract work breakdown structure |
| CWE | caution and warning electronics |
| CWEA | caution and warning electronic assembly |
| CWEU | caution and warning electronics unit |
| CWFSP | caution and warning/fire suppression panel |
| CWG | Commonality Working Group |
| CWG | Communications Working Group |
| CWG | constant-wear garment |
| CWLM | caution and warning limit module |
| CWS | caution and warning system |
| CWSU | condensate water servicing unit |
| CWT | code walk-through |
| CY | calendar year |
| CYC | cyclic mission-unique process |
| CYI | Canary Islands |
| CZCS | coastal zone color scanner |
| Cal/OSHA | California Occupational Safety and Health Act |
| CdT | cadmium telluride |
| Cf | consequence of failure |
| CfS | schedule factor |
| c.g. | center of gravity |
| c/s | counts per second |
| capcom | capsule communicator |
| cfm | cubic feet per minute |
| comcon | command console |
| commfault | communication fault |
| comnet | communications network |
| comsec | communications security |
| cpm | cycles per minute |
| cps | cycles per second |