launching rate
71Gliding — is a recreational activity and competitive sport in which pilots fly un powered aircraft known as gliders or sailplanes. Properly, the term gliding refers to descending flight of a heavier than air craft, whereas soaring is the correct term to… …
72Glider — Gliders or Sailplanes are heavier than air aircraft primarily intended for unpowered flight. See also gliding and motor gliders for more details. [cite web url = http://www.ssa.org/UsTeam/adobe%20pdf/pr%20pdf/BR%20Sailplanes%20V3%2004.pdf title …
73PT boat — PT 105 at high speed PT Boats were a variety of motor torpedo boat (hull classification symbol PT , for Patrol Torpedo ), a small, fast vessel used by the United States Navy in World War II to attack larger surface ships. The PT boat squadrons… …
74Unmanned aerial vehicle — UAV redirects here. For the entertainment company, see UAV Corp.. For the veterans organization, see Ukrainian American Veterans. A group photo of aerial demonstrators at the 2005 Naval Unmanned Aerial Vehicle Air Demo. An unmanned aerial vehicle …
75Space debris — populations seen from outside geosynchronous orbit (GEO). Note the two primary debris fields, the ring of objects in GEO, and the cloud of objects in low earth orbit (LEO) …
76Project Orion (nuclear propulsion) — An artist s conception of the NASA reference design for the Project Orion spacecraft powered by nuclear propulsion. Project Orion was a study of a spacecraft intended to be directly propelled by a series of explosions of atomic bombs behind the… …
77U.S. Helicopter Armament Subsystems — The United States military has developed a number of Helicopter Armament Subsystems since the early 1960s. These systems are used for offensive and defensive purposes and make use of a wide variety of weapon types including, but not limited to… …
78Somalia — Somali Republic Jamhuuriyadda Soomaaliya جمهورية الصومال Jumhūriyyat as Sūmāl …
79Space Shuttle — STS redirects here. For other uses, see STS (disambiguation). This article is about the NASA Space Transportation System vehicle. For the associated NASA STS program, see Space Shuttle program. For other shuttles and aerospace vehicles, see… …
80Launch loop — A launch loop or Lofstrom loop is a design for a belt based maglev orbital launch system that would be around 2,000 km long and maintained at an altitude of up to 80 km (50 mi). A launch loop would be held up at this altitude by momentum of the… …
