Encyclopedia Astronautica
TIMED


American solar satellite. One launch, 2001.12.07. TIMED was the first NASA Solar Terrestrial Probe, operated by Johns Hopkins Applied Physics Lab to study the thermosphere, mesosphere and lower ionosphere.

TIMED was built in-house at APL and had a mass of 587 kg; the project was managed at NASA-Goddard. It measured solar and auroral energy input, atmospheric cooling rates, and atmospheric composition, temperature and wind profiles.

Gross mass: 587 kg (1,294 lb).
First Launch: 2001.12.07.
Number: 1 .

More... - Chronology...


Associated Countries
See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Launch Vehicles
  • Delta American orbital launch vehicle. The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Delta began as Thor, a crash December 1955 program to produce an intermediate range ballistic missile using existing components, which flew thirteen months after go-ahead. Fifteen months after that, a space launch version flew, using an existing upper stage. The addition of solid rocket boosters allowed the Thor core and Able/Delta upper stages to be stretched. Costs were kept down by using first and second-stage rocket engines surplus to the Apollo program in the 1970's. Continuous introduction of new 'existing' technology over the years resulted in an incredible evolution - the payload into a geosynchronous transfer orbit increasing from 68 kg in 1962 to 3810 kg by 2002. Delta survived innumerable attempts to kill the program and replace it with 'more rationale' alternatives. By 2008 nearly 1,000 boosters had flown over a fifty-year career, and cancellation was again announced. More...
  • Delta 2 7000 American orbital launch vehicle. The Delta 7000 series used GEM-40 strap-ons with the Extra Extended Long Tank core, further upgraded with the RS-27A engine. More...
  • Delta 7920-X Three stage vehicle consisting of 9 x GEM-40 + 1 x EELT Thor/RS-27A + 1 x Delta K with 3.05 m (10 foot) diameter fairing More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • National Space Science Center Planetary Page, As of 19 February 1999.. Web Address when accessed: here.
  • NASA/GSFC Orbital Information Group Website, Web Address when accessed: here.
  • Space-Launcher.com, Orbital Report News Agency. Web Address when accessed: here.
  • NASA Report, TIMED Booklet, Web Address when accessed: here.
  • NASA Report, TIMED Factsheet, Web Address when accessed: here.
  • NASA Report, The TIMED Mission: Exploring One of the Atmosphere's Last Frontiers, Web Address when accessed: here.
  • NASA Report, TIMED Quick Facts, Web Address when accessed: here.
  • NASA Report, TIMED Integrated Electronics Module, Web Address when accessed: here.

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC2W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

TIMED Chronology


2001 December 7 - . 15:07 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7920-X. LV Configuration: Delta 7920-10 D289.
  • TIMED - . Mass: 485 kg (1,069 lb). Nation: USA. Agency: CNES; NASA. Manufacturer: Cannes. Class: Astronomy. Type: Solar astronomy satellite. Spacecraft: TIMED. USAF Sat Cat: 26998 . COSPAR: 2001-055B. Apogee: 624 km (387 mi). Perigee: 623 km (387 mi). Inclination: 74.1000 deg. Period: 97.20 min. TIMED was the first NASA Solar Terrestrial Probe, operated by Johns Hopkins Applied Physics Lab to study the thermosphere, mesosphere and lower ionosphere. TIMED was built in-house at APL and had a mass of 587 kg; the project was managed at NASA-Goddard. It measured solar and auroral energy input, atmospheric cooling rates, and atmospheric composition, temperature and wind profiles.

    Five minutes after deploying the JASON satellite, the DPAF adapter atop the Delta upper stage separated to reveal the TIMED satellite inside it. Burn 3 at 1614 GMT put Delta/TIMED in a descending 636 x 1330 km x 71.3 deg orbit; at perigee at 1706 GMT a fourth burn circularized the orbit at 627 x 640 km x 74.1 deg and TIMED was ejected six minutes later. A final depletion burn left the Delta stage in a low perigee orbit.


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