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Delta 6920-8
Part of Thor Family
American orbital launch vehicle. Three stage vehicle consisting of 9 x Castor 4A + 1 x EELT Thor/RS-27+ 1 x Delta K with 2.4 m (8 foot) diameter fairing)

Status: Retired 1990. First Launch: 1990-02-14. Last Launch: 1990-02-14. Number: 1 . Thrust: 3,790.00 kN (852,020 lbf). Gross mass: 219,000 kg (482,000 lb). Height: 39.00 m (127.00 ft). Diameter: 2.44 m (8.00 ft). Apogee: 1,000 km (600 mi).


More at: Delta 6920-8.

Family: orbital launch vehicle. Country: USA. Engines: RS-27A. Spacecraft: LACE, RME. Launch Sites: Cape Canaveral, Cape Canaveral LC17B. Stages: Delta Thor XLT-C, Castor 4A engine, Delta K. Agency: Douglas.

1990 February 14 - . 16:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 6920-8.
  • USA 51 - . Payload: LACE. Mass: 1,430 kg (3,150 lb). Nation: USA. Agency: SDIO. Class: Military. Type: Strategic defense satellite. Spacecraft: LACE. Decay Date: 2000-05-24 . USAF Sat Cat: 20496 . COSPAR: 1990-015A. Apogee: 480 km (290 mi). Perigee: 463 km (287 mi). Inclination: 43.1000 deg. Period: 94.00 min.

    Low-power Atmospheric Compensation Experiment for SDIO. Research and exploration of the upper atmosphere and outer space. The McDonnell Douglas Corporation has provided the following information for its launch of the Losat spacecraft on 14 Feb 1990: LACE spacecraft (Losat-L), launch time 1615:00.626 GMT, ETR Launch Complex 17. Programmed orbital parameters 95.6 min, apogee 551 km, inc. 43.1 deg. Evaluate laser beam distortion in space.

  • USA 52 - . Payload: RME. Mass: 1,040 kg (2,290 lb). Nation: USA. Agency: SDIO. Class: Military. Type: Strategic defense satellite. Spacecraft: RME. Decay Date: 1992-05-24 . USAF Sat Cat: 20497 . COSPAR: 1990-015B. Apogee: 281 km (174 mi). Perigee: 261 km (162 mi). Inclination: 43.1000 deg. Period: 89.90 min.

    Relay Mirror Experiment; also known as Losat-R. RME validated stabilization, tracking, and pointing technologies for Strategic Defense Initiative (SDI) missions through a credible demonstration of a space-based relay mirror system. The Wideband Angular Vibration Experiment (WAVE) measured low-level angular vibrations affecting performance of acquisition, tracking, and pointing systems. The experiment demonstrated that a laser beam can be accurately relayed from the earth to an orbiting satellite 450 kilometers away and then back to a 3-meter target on the ground. It achieved relay beam pointing accuracy which was 16 times better than the technical requirement. WAVE demonstrated the capability to discern platform disturbance amplitudes of a few nanoradians at discrete frequencies and is therefore a candidate to fulfill similar requirements for future ATP experiments.



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