Delta M


Delta M
Delta M
Launch of the first Delta M with Intelsat 301
Launch of the first Delta M with Intelsat 301
Function Expendable launch system
Country of origin  United States
Launch history
Status Retired
Launch sites Cape Canaveral LC-17A
Total launches 13
Successes 11
Failures 2
Maiden flight 18 September 1968
Last flight 17 March 1971

The Delta M or Thor-Delta M was an American expendable launch system used for thirteen orbital launches between 1968 and 1971. It was a member of the Delta family of rockets.

The Delta M had a three stage configuration. The first stage was the Long Tank Thor, a stretched version of the Thor missile, previously flown on the Delta L. Three Castor-2 solid rocket boosters were attached to the first stage to increase thrust at lift-off. A Delta E was used as the second stage, and the third stage was a Star-37D solid rocket motor. On the final flight, six boosters were flown instead of three, in a configuration known as the Delta M6, or "Super Six".

All thirteen launches were made from Launch Complex 17A at the Cape Canaveral Air Force Station. The maiden flight was on 18 September 1968, and carried the Intelsat 301 satellite. It failed to reach orbit after it went out of control and was destroyed by range safety. The fifth flight also failed, leaving Intelsat 305 in an unusable orbit, due to a third stage malfunction. Of the thirteen launches, twelve carried geosynchronous communications satellites. The thirteenth, which was the final flight and the only one in the M6 configuration, placed Explorer 43 into a highly elliptical orbit.

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • delta — delta …   Dictionnaire des rimes

  • Delta — commonly refers to: Delta (letter), Δ or δ in the Greek alphabet, also used as a mathematical symbol River delta, a landform at the mouth of a river Delta Air Lines, a major U.S. airline Delta may also refer to: Contents 1 Places …   Wikipedia

  • Delta 2 — Delta II  Ne doit pas être confondu avec Delta 2. Une Delta II 7925 s’apprete à lancer la sonde De …   Wikipédia en Français

  • Delta IV — Medium Données générales Mission Lanceur Commercial Orbite LEO et GTO Période des lancements …   Wikipédia en Français

  • delta — [ dɛlta ] n. m. • delta du Nil XIIIe; de delta « lettre grecque » I ♦ Quatrième lettre de l alphabet grec (Δ, δ), correspondant au d. En forme de delta. ⇒ deltoïde, triangulaire. Aile (en) delta. ⇒ deltaplane. ♢ Adj. inv. Phys. Rayon delta :… …   Encyclopédie Universelle

  • Delta A — launching Explorer 14 Function Expendable launch system Country of origin …   Wikipedia

  • Delta B — prior to the launch of TIROS 8 Function Expendable launch system Country of origin …   Wikipedia

  • Delta C — The first Delta C launches with Explorer 18 Function Expendable launch system Country of origin …   Wikipedia

  • Delta D — Launch of a Delta D with Intelsat I Function Expendable launch system Country of origin …   Wikipedia

  • Delta J — Launch of the Delta J with Explorer 38 Function Expendable launch system Country of origin   …   Wikipedia


We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.