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NASA SDIO Delta Phoenix Vector Sum Program Boost Phase Intercept ICBM Patch For Sale
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NASA SDIO Delta Phoenix Vector Sum Program Boost Phase Intercept ICBM Patch:
$8.95
NASA SDIO Delta Phoenix Vector Sum Program Boost Phase Intercept ICBM Send More Targets PatchPatch is 3.875" in diameter.
An essential element in strategic defense planning and feasibility assessment is the so called "boost phase intercept", i.e., the destruction of enemy ICBM's during the vulnerable powered flight phase, prior to the release of reentry vehicles and decoys. An efficient boost phase defense is essential in order to reduce to manageable proportions the problems of midcourse and terminal defense; it is also extremely challenging due to the limited engagement time available and the requirement for guided intercept of an accelerating target.
With these factors in mind, an early assessment of the feasibility of powered space intercept was deemed to be of the highest importance by the Strategic Defense Initiative Organization (SDIO). To explore these issues, a program (code named Vector Sum) having as a major goal the space intercept of a thrusting target during powered flight was initiated in May 1985, following completion of a study phase begun in February. This program culminated less than 16 months later in the launch on 5 September 1986 of the NASA/McDonnell-Douglas Delta 180 vehicle in the first mission conceived and carried out by SDIO.
This mission, which was fully compliant with the requirements of the 1972 Anti-Ballistic Missile (ABM) Treaty, utilized the restartable upper stage of the Delta 3920 launch vehicle as a target. A direct hit at a closing velocity of 2.9 km/s was achieved from a standoff range of 220 km by an interceptor consisting of a Hughes Phoenix AIM54C air to air radar seeker and a specially designed propulsion and control module derived from the Delta 3914 upper stage. Onboard the second stage target vehicle was an instrumentation suite which provided both pre-encounter and endgame data in the infrared, visible, and ultraviolet portions of the spectrum, as well as guidance data from the engineering flight test of a 1.06 mm laser radar.
MICHAEL GRIFFIN and MICHAEL RENDINE. "Delta 180/Vector Sum - The first powered space intercept," AIAA 1988-161. 26th Aerospace Sciences Meeting. January 1988
This patch is from my personal collection from a smoke free and pet free home.Thank you for looking at my listing. Please see my other listings for more space patches and other items.
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