rear main rotor
51SH-2 Seasprite — Infobox Aircraft name= SH 2 Seasprite caption= SH 2F Seasprite of the US Navy type= ASW helicopter manufacturer= Kaman Aircraft Corporation designer= first flight= July 2, avyear|1959 (HU2K 1) introduction= December avyear|1962 retired= status=… …
52Boeing X-50A Dragonfly — X 50 Role Experimental gyrodyne UAV Manufacturer Boeing First flight 24 November 2003 Status …
53Sprag — A sprag is a one way freewheel clutch used in a number of applications. It resembles a roller bearing with rollers shaped like a figure eight and cocked with a spring. When the unit rotates in one direction, the rollers stand up and bind because… …
54International Battlefield UAVs — This chapter completes the discussion of international battlefield UAVs, focusing on UAVs from European nations and from other regions.French UAVsMatra BAE Dynamics developed a UAV named Dragon, no relation to the BAI Dragon. The Dragon was… …
55Non-US battlefield UAVs — Multiple unmanned aerial vehicles for battlefield use (battlefield UAVs) are operational in countries around the world, with even more currently in development. This article deals with those in countries other than United States. For the numerous …
56Sprag clutch — One way bearing combining sprags and bearing rollers in one race A sprag clutch is a one way freewheel clutch. It resembles a roller bearing, but instead of cylindrical rollers, non revolving asymmetric figure of eight shaped sprags are used.… …
57Fatigue (material) — Metal fatigue redirects here. For the video game, see Metal Fatigue (disambiguation). v · d · e Materials failure modes …
58Sikorsky H-34 — Sikorsky H 34/S 58 Role Helicopter Manufacturer Sikorsky Aircraft First flight …
59MBB Bo 105 — Bo 105 A German registered Bo 105 Role Light utility helicopter Manufacturer …
60Los Angeles Airways Flight 841 — Infobox Airliner accident name=Los Angeles Airways Flight 841 Date=May 22, 1968 Type=Mechanical Failure Site=Paramount, California Coordinates = Fatalities=23 Injuries=0 Aircraft Type=Sikorsky 61L Operator=Los Angeles Airways Tail… …
