backup fuel supply
71Nuclear meltdown — Three of the reactors at Fukushima I overheated, causing core meltdowns. This was compounded by hydrogen gas explosions and the venting of contaminated steam which released large amounts of radioactive material into the air.[1] …
72CF-105 Arrow — Infobox Aircraft name= CF 105 Arrow type= Interceptor manufacturer= Avro Aircraft Limited (Canada) caption= Photo from the Canadian Department of National Defence designer= first flight= 25 March 1958 introduction= retired= status= Cancelled 20… …
73HMS Ark Royal (91) — HMS Ark Royal (pennant number 91) was an aircraft carrier of the Royal Navy that served in the Second World War and was torpedoed on 13 November 1941 by the German submarine U 81 , sinking the following day.Designed in 1934 to fit within the… …
74Ledo Road — The Ledo Road, (from Ledo, Assam, India to Kunming, Yunnan, China) was built during World War II so that the Western Allies could supply the Chinese as an alternative to the Burma Road which had been cut by the Japanese in 1942. It was renamed… …
75Military history of the United Kingdom during World War II — Periods and eras in English history Anglo Saxon period (927–1066) Norman period …
76Apollo Command/Service Module — Apollo CSM The Apollo 15 CSM in lunar orbit Description Role: Earth and Lunar Orbit Crew: 3; CDR, CM pilot, LM pilot Dimensions Height: 36.2 ft 11.03 m …
77Nuclear reactor safety systems — This article covers the technical aspects of active nuclear safety systems. For a general approach to nuclear safety, see nuclear safety. The three primary objectives of nuclear reactor safety systems as defined by the Nuclear Regulatory… …
78Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …
79Auxiliary power unit — An auxiliary power unit (APU) is a device on a vehicle whose purpose is to provide energy for functions other than propulsion. Different types of APU are found on aircraft, as well as on some large ground vehicles.AircraftFunctions of APU The… …
80Airbus A380 — A380 redirects here. For other uses, see A380 (disambiguation). A380 A Singapore Airlines …
