May 15, 2009

all about concorde...the fastest passenger airplane




The AĆ©rospatiale-BAC Concorde aircraft was a turbojet-powered supersonic passenger airliner, a supersonic transport.

Maximum speed: 2,330 km/h
Range: 7,250 km
Rate of climb: 5,000 ft/min (25.41 m/s)
Maximum
nose tip temperature: 127 °C





Concorde travels in less than half the time of other airliners. While commercial jets take eight hours to fly from New York to Paris, the average supersonic flight time on the transatlantic routes was just under 3.5 hours. In transatlantic flight, Concorde travelled more than twice as fast as other aircraft — other aircraft frequently appeared to be flying backwards.






With only 20 aircraft ultimately built, the costly development phase represented a substantial economic loss. Additionally, Air France and British Airways were subsidised by their governments to buy the aircraft. As a result of the type's only crash (on 25 July 2000), world economic effects arising from the 9/11 attacks, and other factors, operations ceased on 24 October 2003. The last "retirement" flight occurred on 26 November 2003.






According to the official investigation conducted by the French accident investigation bureau (BEA), the crash was caused by a titanium strip, part of a thrust reverser, that fell from a Continental Airlines DC-10 that had taken off about four minutes earlier. This metal fragment punctured a tyre on the left main wheel bogie. The tyre exploded, and a piece of rubber hit the fuel tank and broke an electrical cable. The impact caused a hydrodynamic shockwave that fractured the fuel tank some distance from the point of impact. This caused a major fuel leak from the tank, which then ignited due to severed electrical wires which were sparking. The crew shut down engine number 2 in response to a fire warning but were unable to retract the landing gear, hampering the aircraft's climb. With engine number 1 surging and producing little power, the aircraft was unable to gain height or speed, entering a rapid pitch-up then a violent descent, rolling left. The impact occurred with the stricken aircraft tail-low, crashing into the Hotelissimo Hotel in Gonesse.



Prior to the accident, Concorde had been arguably the safest operational passenger airliner in the world in terms of passenger deaths-per-kilometres travelled with zero. After the accident, the death rate was 12.5 fatal events per million flights, more than three times that of the second worst aircraft. However, no aircraft's safety can be accurately measured from a single incident, and safety improvements were made in the wake of the crash.




During the crash, there was so much heat coming out of the tail of the concorde that even the skin of the person sitting in the car on the road was affected. I myself watched this on Discovery documentary on corcorde.







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