Can a helicopter fly for a long time? How long does it take to fly?

time:2022-12-08 08:09:05 source:scripttoolbox.com author:Power Supply
Can a helicopter fly for a long time? How long does it take to fly?

It takes 15 hours and 8 minutes to fly from Shanghai to Singapore. The normal flight time of modern helicopters is generally 2 hours to 5 hours. But that's not the limit for helicopters. The world record half a century ago On the afternoon of April 6, 1966, a prototype of a modified Hughes OH-6A light reconnaissance helicopter took off from California, USA, and flew without refueling. Landed on a Florida beach this morning. The distance of the straight flight reached 3561.55 kilometers, the highest record has been maintained to this day. The main reason why it can fly much farther than other helicopters is that it is light in weight and has a large fuel tank. Its dead weight is only 557 kg, which is less than the weight of a car at that time, but the fuel capacity is as high as 590 kg. Hughes chief test pilot Bob Ferry, 42, was in charge of the flight. For this attempt, the U.S. Army loaned Hughes an OH-6A from a hangar. Hughes vowed to take the flight in order to beat potential competitors. Their engineers have done a lot of downsizing on the helicopter, minimizing the weight of the fuselage, removing all the flight control equipment for the co-pilot, removing the extra seats and even the door handles, and moving only with the VHF transceiver. Except for the radio navigation equipment, it was eventually reduced from 557 to 465 kg. To further lose weight, Ferry himself lost another 9kg. Even to save a few kilos, instead of flying boots, he switched to knitted slippers and replaced the flying helmet with an old leather flying cap. In order to increase the fuel carrying capacity, he filled the remaining space with aluminum fuel tanks, and the fuel capacity reached a staggering 844 kg. At 2:20 p.m. PT, Ferry took off from Hughes Airport. The helicopter's fuel load was so heavy that it exceeded the engine's torque limit by 21 percent on takeoff. Finally, after leaving Culver City, California, 15 hours and 8 minutes north of Los Angeles, the helicopter flew all night, and finally landed on Ormond Beach, Florida at 8:28 a.m. the next day with only the fuel in the tank. Less than 5kg of oil remains. Fly above 10,000 feet (3 km) for at least eight hours of the flight to take advantage of tailwinds to reduce fuel burn. The average speed is about 241 kilometers per hour. The record of 3,561.55 km broke the previous record of 3,388 km set a month earlier (March 6, 1965) by the competitor Sikorsky's SH-3A Sea King, and was the most unrefueled flight of any helicopter of any size and weight. long. This iconic flight has remained so for half a century. The helicopter is now in the collection of the U.S. Army Aviation Museum at Fort Rucker, Alabama. Hughes built a total of 1,420 OH-6A helicopters and derivatives for the U.S. Army, nicknamed the "Cayuse". If you have seen "Black Hawk Down", you should remember the "Little Bird" helicopter formation in it, which is one of the derivative versions of this type of helicopter. The cost of such a helicopter (including the modified MH-6B and AH-6C) is very cheap. Unlike other helicopters, which are quoted in the millions or even tens of millions, the Hughes Company offered the Army only $190,000 ( Engines are not included), and in 1968, when the U.S. military wanted to order 2,700 more, the price was cut to only $56,500 (in current dollars).

(Responsible editor:A main board)

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