FY 1979 RDT&E DESCRIPTIVE SUMMARY Program Element: #35158F Title: Satellite Data System (SDS) DoD Missfon Area: Strategic Command, Control and Communications #331 Budget Activity: Strategic Programs 43 RESOURCES (PROSECT LISTING): é: in thousands) Project FY 1977 FY 1978 FY 1979 FY 1980 Additional Total Number Title _Actual Estimate Estimate Estimate To Completion Estimated Costs TOTAL FOR PROGRAM ELEMENT 8,110 12,800 29,000 38 ,600 Cont inu ing Not Applicable DESCRIPTION OF ELEMENT AND MISSION NEED: The Satellite Data “ (SDS) is a multipurpose, communications g satellite which will provide reliable and secure communication: Operating in conjunction with the eynchronous equatorial Fleet Satellite Comffunications (FLTSATCOM) sateiTites, the SDS completes the coverage required by the Air Force Satellite Communications (AFSATCOM) system for essential command and control communications for strategic forces. BASIS FOR FY 1979 RDT&E REQUEST: This request includes funds for continuing the multi-year design and development efforts to improve the anti-jam capabilities of the AFSATCOM payload. Also included are the multi-year development necessary to traneition follow-on satellites to the Space Shuttle. Sustaining engineering support will be required on a continuing basis. OTHER APPROPRIATION FUNDS: Missile Procurement ' 20¢¢" 61,540 83,200 38,800 119,000 Continuing Not Applicable Quantities Satellites 1 1 1 Launch Vehicles 1 (Titan) 1 (Agena) 339
Program Element: #35158F Title: Satellite Data System Shs) DoD Mission Area: Strategic Command, Control and Comaunicationa #331 Budget Activity: Stratept. Programs a3 DETAILED BACKGROUND AND DESCRIPTION: ‘The Satellite Data System (SDS) will provide critical, Yeal-time comaand, control,and communications for Strategic Air Command Single Integrated Cp®Pational Plan (SI6P forces. The SDS is an integral part of the Air Force Satellite Communicatfons (AFSATCOM) system which includes the Air Force Uitra High Frequency (UHF) communications capability on the synchronous equatorial Fleet Satellite Communications (FLTSATCOM) satellites, piggy-back transponders on selected host satellites,and afrborne/ground radio terminals. As such, the SDS will complement the FLTSATCOM egatellite coverage by providing UHF coverage which the FLISATCOM satellites cannot provide. Additionally, SDS will support the Air Force Satellite Control Facility (AFSCF) requirement for reliable, two-way high data rate, S-band communications between AFSCF remote tracking stationa. The direct benefits of SDS will be reliable and secure direct communications Nwhich a1 result in greatly improved comma and control of SIOP forces, elimination’of the dependence on some of the vulnerable AFSCF communications 4 RELATED ACTIVITIES: The space segment of the FLTSATCOM will be developed, procured; dnd launched under the Navy's WLISATCOM Program Element, 33109N:- The Air Force aircraft and ground UHF radio terminals required for operation ~with the FLTSATCOM and SDS satellites are funded within the AFSATCOM Program Element, 33601F. The Pir stations are funded under the AFSCF Frogran Element, 33110F. ; Space Shuttle and Inertial Upper Stage Flights for all operational"Nir Force satellites, including those for SDS, pravided by the Space Launch Support Program, PE 35171F. WORK PERFORMED BY: Air Force Systems Command's Space and Missile Systems Organization, Los Angeles, California is responsible for the SDS. The prime contractor is Hughes Aircraft Company, El Segundo, California. General Systems Engineering and Integration is performed by the Aerospace Corporation, El Segundo, California. PROGRAM ACCOMPLISHMENTS AND FUTURE PROGRAMS: 1. FY 1977 and Prior Accomplishments: The technology phase of the program was completed in FY 1971. This was followed by a contract definition phase in FY 1972 which established the system configuration. The system acquisi-~ tion contractor was selected by competitive source selection and 4 system development contract was awarded in June 1972. The system Critical Design Review (CDR) was successfully completed {in March 1974 whieh all critical specl- fications being met or exceeded. The structural (X-1) and qualification (Y-1) model spacecraft and the initial flight vehicle (F-1) were procured incrementally with Research, Development, Test and Evaluation (RDT&E) funds. A production option to the development contract was excercised in FY 1974. This option provided for the fabrication, essembly, and test of the first production model spacecraft (F-2) and a backup flight vehicle (F-3). The development and production schedules were phased to achieve the required delivery, Launch, and system operational dates. Communi- cations subsystem engineering models were completed and tested in November 1973. The structural model satellite 360 femeay
Title: Satellite Data System (SDS) Program Flement: #35158F Budget Activity: Strategic Programs #3 No Mission Area: Strategic Command, Control and Communications #331 testing was finished tn May 1975. A qualification model satellite was builg,and tested to Cully qualify. the sateti ite prior.to production. . Full operational capa- f All payloads were fully checked lout on-orbit “PLLity was declared for all payloads after successful on-orbit checkout. Primary activities in FY 1977 included sustaining engineering support, design andfevelopment efforts to transition follow-on satellites to the Space Shuttle, and rellability improvement activities. Refurbishment of the Qualification Model Satellite (Y-1) was begun. When fully refurbished, Y-1 will become the fourth operational satellite (F-4). 2. FY 1578 Program: Efforts for this year include sustaining engineering support, initiating design and development activities to improve che anti-jam capabilities of the Air Force Satellite Communicaticns System (AFSATCUM) payload on the aixth SDS satellite (F-6), and continuing the multi-year development necessary to trgnsition to the Space Shuttle. Also included are continuing efforts to improve satellite payload reliabilities. f 3. F¥_1979 Planned Program: The increase from FY78 to FY79 is due to the fact that the Space Shuttle transition and AFSATCOM anti-~jam improvements enter full scale development in FY79, Multi-year development efforts will continue to permit follow-on satellites (F-6 and subsequent satellites) to transition from the current expendable launch vehicles to the Space Shuttle and Inertfal Upper Stage. A major multi-year development program will continue to enhance the anti-jam characteristice of the AFSATCOM system payload. Sustaining engineering support will be required on a contin- uing basis. The current estimate for the FY79 planned program has decreased by $4.7M compared to the estimate made a year ago. 4. FY 1980 Planned Program: The FY 1980 plan is to continue sustaining engineering support, continue development of the anti-jam improvements for the AFSATCOM payload and continue the development efforts related to Space Shuttle transition. 5. Program to Cowpictiony This is a continuing program. As an integral part of the AFSATCOM, the program will con- “Joomnunicat Lons coverage and be totally compatible with the AFSATCOM tinue to previde critical aircraft and ground radio terminals. Sustaining engineering support will be required to maintain design compatibility and to incorporate improvements for survivability and reliability. 361
Program Element: #35158F Title: Satellite Data System (SDS) DoD Mission Area: Strategic Command, Control and Communications #331 Budget Activity: Strategic Proprams #3 6. MLllestcones: Date A. System Preliminary Design Review Mar 73 B. System Critical Design Review ; Har 76 C. Final Integrated Systems Test D. Launch First Satellite (F-1) f & E. Launch Second Satellite (F-2) F. Full Operational Capability 362
Rudeet Activitv: Strategic Programs #3 Proeram Flement:_ 35158F Test and Evaluation Data 1. Development Test and Evaluation: The development contractor for the Satellite Data Systom (SDS) is Hughes ~ Aircraft Company, El Segundo, Caiifornia. The first satellite was launched _ _ ~ The first satellite (F-1) was funded Operational Capability for all payloads was established’ entirely within the development program. The second saf@llite (F-2) was’the first vehicle funded under the production program. The development hardware included engineering models of the communications subsystems, a structural model spacecraft (X-1) and a full-up qualification model spacecraft (Y-1). Development tests of the communications sub- systems engineering models were completed in November 1973. Structural testing was satisfactorily completed on the X-1l engineering model spacecraft in May 1975. Systema level qualification was completed in October 1975 with ali critical performance specifications met or exceeded. System level qualification was designed to demonstrate design integrity and performance to specification via a serfes of tests including shock, acoustic, modal survey, thermal, electromagnetic interference (EMI), solar-thermal vacuum, and integrated system test. Reliability (life) tests of critical cqgponents will continue throughoug the development program. The F-1 spacecraft was acceptance tested during the The Y-1 spacecraft is a full configured spacecraft which is being refurbished.and will be used as an operational flight vehicle (F-4). 2. Operational Test and Evaluation: Test and evaluation is limited to Development Test and Evaluation (DT&E) except for payloads supporting cther systems, such as Air Force Satellite Communications System (AFSATCOM), which are tested in conjuncticn with the appropriate supported system. The AFSATCOM Final Operational Test and Evalustivn (FOT&E) 1s scheduled for FY 1979. 3. System Characteristics: a. UWF mission characteristics 240 - 400 MHz 12 - 5 KHz channels, 73 BPS, two-way teletype Anti-jam capability oo L | b. AFSCF Mission Characteristics 1.76 - 2.3 GHz (S-Band) Data Pass - 256 KBs, 32 KBs 363 ra x
Budget Activity: Strategic Programs 43 Program Element: 35158F _- = — wa WV d. Orbital life Mean Mission Duration (MMD) a won Mission characteristics were validated during development Test and Evaluation (DT&E). Operational characteristics and orbit performance of payloads supporting other systema will be demonstrated during the Operational Test and Evaluation (OT&E) of the supported system, e.g., Air Force Satellite Communications System (AFSATCOM). 364