very small rudder
81naval ship — Introduction the chief instrument by which a nation extends its military power onto the seas. Warships protect the movement over water of military forces to coastal areas where they may be landed and used against enemy forces; warships… …
82List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
83flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
84Spin (flight) — In aviation, a spin is an aggravated stall resulting in rotation about the center of gravity wherein the aircraft follows a downward corkscrew path. Spins can be entered unintentionally or intentionally, from any flight attitude and from… …
85Aircraft flight control systems — consist of flight control surfaces, the respective cockpit controls, connecting linkages, and the necessary operating mechanisms to control an aircraft s direction in flight. Aircraft engine controls are also considered as flight controls as they …
86Radio-controlled helicopter — Nitro powered Align T Rex 600 NSP Electric powered Venom Ai …
87RMS Titanic — was an Olympic class passenger liner owned by the White Star Line and built at the Harland and Wolff shipyard in Belfast, Ireland (now Northern Ireland). On the night of 14 April 1912, during her maiden voyage, Titanic hit an iceberg, and sank… …
88F-16 Fighting Falcon — infobox Aircraft name= F 16 Fighting Falcon caption=A USAF F 16 over Iraq after refueling, 2008 type= Multirole fighter national origin = United States manufacturer= General Dynamics Lockheed Martin first flight= 2 February avyear|1974… …
89Scow — A scow, in the original sense, is a flat bottomed boat with a blunt bow, often used to haul garbage or similar bulk freight; cf. barge. The etymology of the word is from Dutch schouwe , meaning such a boat.ailing ScowsSailing scows have… …
90Supermarine Spitfire (early Merlin powered variants) — Infobox Aircraft name =Spitfire type =Fighter manufacturer =Supermarine caption =Spitfire Vc launching from USS Wasp designer =R. J. Mitchell first flight =5 March 1936 introduction =1938 retired =1955, RAF status = primary user =Royal Air Force… …
