ammonium perchlorate
51R-39 (missile) — Infobox Weapon is missile=yes name = R 39 type = Strategic SLBM vehicle range = 8,250 km filling = 10 yield = 200 Kt each engine = three stage solid fuel guidance = Astroinertial cep = 500 metres (western estimate) speed = length = 16 m (8.4 m… …
52Hydroxyl-terminated polybutadiene — (HTPB) is a polymer of butadiene terminated at each end with a hydroxyl functional group. It belongs to a class of polymers known as polyols. It is used to react with a diisocyanate to form a polyurethane, a stable and easily stored synthetic… …
53National Association of Rocketry — The National Association of Rocketry (NAR) is the governing body for the sport/hobby of model rocketry in the United States. It was established in 1957 by Orville Carlisle and G. Harry Stine and is currently headed by Trip Barber. It is the… …
54AP — may refer to:In companies and organizations: * Associated Press, an American news agency * A P, Great Atlantic and Pacific Tea Company * The IATA code for Air One * Allied Press, a major New Zealand newspaper company * Polish Aero Club ( Aeroklub …
55Tripoli Rocketry Association — The Tripoli Rocketry Association is one of the two major organizing bodies for high power rocketry in the USA (See also: National Association of Rocketry). It was founded in 1964 as a high school science club, integrating both rocketry and space… …
56Model rocket motor classification — Motors for model rockets and high powered rockets are classified by total impulse into a set of letter designated ranges, from A (the smallest, though ½A, ¼A, and ⅛A motors are also available), up to O as the largest. Class A is from 1.26 newton… …
57Graphite-Epoxy Motor — A Graphite Epoxy Motor (GEM) is a high performance, solid rocket motor, used for supplemental thrust on several launch vehicles, including the Boeing Delta II and Delta IV. They are designed to allow launch vehicles to deliver larger payloads to… …
58Portland State Aerospace Society — The Portland State Aerospace Society (or PSAS), founded in 1998, is a student group at Portland State University building high powered rockets with the vision of putting nanosatellites into Earth orbit. Pursuing this vision has led to building… …
59Brazilian space program — The Brazilian space program is the most advanced space program in Latin America, with significant capabilities in launch vehicles, launch sites, and satellite manufacturing. It is based at the National Institute for Space Research (INPE), under… …
60Aluminium recycling — is the process by which scrap aluminium can be reused in products after its initial production. The process involves simply re melting the metal, which is far less expensive and energy intensive than creating new aluminium through the… …
