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UARS
Part of MMS
UARS
UARS
Credit: Manufacturer Image
American earth ionosphere satellite. The Upper Atmospheric Research Satellite was designed to study the physical and chemical processes occurring in the Earth's upper atmosphere (between 15 and 100 km). Earth Observing satellite built by GE Astro Space, Fairchild (Bus) for NASA, USA. Launched 1991. Used the MMS bus.

AKA: Upper Atmosphere Research Satellite. Status: Operational 1991. First Launch: 1991-09-12. Last Launch: 1991-09-12. Number: 1 . Gross mass: 6,795 kg (14,980 lb). Height: 9.80 m (32.10 ft).

The vehicle provided measurements of atmospheric internal structure (trace constituents, physical dynamics, radiative emission, thermal structure, density) and measurements of the external influences acting upon the upper atmosphere (solar radiation, tropospheric conditions, electric fields). The specific UARS mission objectives were to study energy input and loss in the upper atmosphere, global photochemistry of the upper atmosphere, dynamics of the upper atmosphere, coupling among these processes, and coupling between the upper and lower atmosphere. The spacecraft was 3-axis stabilized via reaction wheels, torque rods to 36 arc seconds. Attitude knowledge to 20 arc seconds used star trackers, Earth sensors, an inertial reference unit, and Sun sensors. The single solar array was 1.5 x 3.3 meters and generated 1.6 kW, recharging 3 x 50 A-hr batteries. The hydrazine propulsion system provided for orbit insertion and maintenance. S-band communications was via low gain antennas and a gimbaled high gain antenna through TDRSS. The payload included:


More at: UARS.

Family: Earth, Ionosphere sat, Medium earth orbit. Country: USA. Launch Sites: Cape Canaveral, Cape Canaveral LC39A. Agency: NASA, Astro Space, Fairchild. Bibliography: 2, 279, 6, 7003.

1991 September 12 - . 23:11 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. Launch Platform: MLP3. LV Family: Shuttle. Launch Vehicle: Space Shuttle.

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