Exhibit B
1.0 INTRODUCTION
This document specifies the performance characteristics of an ASIASAT I domestic communications satellite that shall be designed to carry video, message and digital traffic using both single and multiple
and multiple carriers transponder.
per
The
spacecraft namely
performance
E
longitude
shall be
and
optimized 1160 E
for two
longitude.
orbital
The
locations;
105.50 specifications contained in this document apply to these orbital locations as indicated throughout mission fuel life.
The mission fuel life at either orbital location shall be at least these 9 years. In the event the mission fuel life is greater than 9 years, specifications shall apply to
greater than 9 year mission fuel life or the 10 year design life, whichever is less.
the
12 channel coverage to China and the
The spacecraft shall provide: remaining 12 channel coverage to Pakistan, Burma and Thailand.
The spacecraft shall be spin-stabilized with a despun communications
contain an The spacecraft shall antenna.
apogee motor for payload and injection into synchronous orbit from the ellipitcal transfer orbit provided. by the launch vehicle. It shall also contain an active attitude and position control subsystem, telemetry and command subsystem, and thermal, structural and electrical power subsystem.
1
2.0
SPACECRAFT SYSTEM CHARACTERISTICS
2.1 Size
spacecraft
has been
fit within the envelope to designed The
and Space Administration Space restrictions of the National Aeronautics
1984. Shuttle) launch vehicle in February Transportation System (STS or
launch provisions Section 2.5 of this specification contains additional applicable to the spacecraft.
2.2 Weight
The all-up weight of the spacecraft, excluding hydrazine and the apogee kick motor expendables, shall not exceed 1140 lbs.
2.3 Stabilization
The spacecraft is spin-stabilized and has a ratio of the roll moment- greater than 1.04 during moment-of-inertia of-inertia to the transverse transfer orbit. After attaining drift orbit, despin of the platform and deployment of the antenna and aft solar panel, stabilization is provided by a The direction of spin is combination of the spin and active nutation control.
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B-2
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