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STEX
STEX
STEX
Credit: Manufacturer Image
American tether technology satellite. STEX's (Space Technology EXperiments) main equipment was provided by the Naval Research Laboratory. Built by Lockheed Martin Astronautics (Denver) for NRO, USA. Launched 1998.

Status: Operational 1998. First Launch: 1998-10-03. Last Launch: 1998-10-03. Number: 1 .

These included:

NASA NSSDC Master Catalog Description

The STEX (Space Technology Experiments) satellite carried 29 new technologies intended to result in lower cost and higher performance spacecraft for future missions. Among the technologies were Russian-derived Xenon Hall-effect electric thrusters capable of delivering 40 mN of thrust, a 51 Gbit solid-state data recorder, and high-density NiH batteries designed to last longer and provide more energy with less weight. ATEx (Advanced Tether Experiment), a 6 km tether with TiPS heritage, was to be deployed as a separate sub-satellite. Frangibolts were used on the mission for shockless deployment of the spacecraft and tether. Experimental solar panels with high-efficiency solar cells were also carried. The planned lifetime of STEX was two years.

The spacecraft was comprised of a body shell and two tracking solar panels. A blowdown liquid propulsion system was carried. The spacecraft was three-axis stablized. A lightweight precision star tracker was used to determine satellite pointing.

On January 16, 1999, ATEx was deployed, but failed. It was deployed but its two masses separated only by 22 m. It is now tracked as a separate object (USA 141, 1998-055C).


More at: STEX.

Family: Medium earth orbit, Technology, Tether technology satellite. Country: USA. Launch Vehicles: Taurus, ARPA Taurus. Launch Sites: Vandenberg, Vandenberg 576E. Agency: NRO, Martin. Bibliography: 2, 279, 6948, 13225.

1998 October 3 - . 10:04 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 576E. LV Family: Taurus. Launch Vehicle: ARPA Taurus.

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