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BOEING
EXPLORING ADDING AIR LAUNCH TO ITS DELTA / SEA LAUNCH FAMILIES
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Boeing
might expand its family of rockets by building a new air-launched
booster that could carry military, commercial and science payloads
into to low Earth orbit (LEO). The AirLaunch system is being
developed primarily as a near-term, low-cost, launch-on-demand
system for the military. AirLaunch could be used to support the
deployment and replenishment of LEO communications satellites,
hypersonic research, remote sensing and technology development.
Designed as a possible launch system for the U.S. Air Force's
proposed Space Maneuver Vehicle (SMV), AirLaunch would lift
approximately 3,000 kg (7,500 lbm) to LEO, with launch-on-demand
features at competitive prices. The AirLaunch system would consist
of two basic configurations. The first would support the military
and would be capable of placing an SMV into LEO. The second
configuration would be available for civil, commercial and
military applications using a Conventional Payload Module. Boeing
defined its AirLaunch system during a two-phase study conducted
during 1999, and keeping development and recurring costs to a
minimum was a priority. Thiokol Propulsion would provide the
AirLaunch solid rocket motors in a multi-stage configuration. A
modified Boeing 747-400F will carry the AirLaunch vehicle to a
predetermined launch altitude. During the launch sequence the
AirLaunch's wing and tail assembly will provide the necessary lift
and lateral stability until 747/launch vehicle separation is
achieved. After ignition, the launch vehicle wing and tail
assembly will be jettisoned. Boeing declined to discuss the proposed cost of Air
Launch, or where a prototype might be built. The feasibility study
is expected to take 48 months and would likely involve test
flights.
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2000 SPACEandTECH
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