what changes have been made in the size and speed of airplanes
Answers
This changes have been madeThe largest aircraft by dimensions and volume (as of 2016) is the 302-foot-long (about 95 meters) British Airlander 10, a hybrid blimp, with helicopter and fixed-wing features, and reportedly capable of speeds up to 90 mph (about 150 km/h), and an airborne endurance of two weeks with a payload of up to 22,050 pounds (11 tons).[12][13][14]
The largest aircraft by weight and largest regular fixed-wing aircraft ever built (as of 2016), is the Antonov An-225. That Ukrainian-built 6-engine Russian transport of the 1980s is 84 meters (276 feet) long, with an 88-meter (289 foot) wingspan. It holds the world payload record, after transporting 428,834 pounds (200 tons) of goods, and has recently flown 100-ton loads commercially. Weighing in at somewhere between 1.1 and 1.4 million pounds (550–700 tons) maximum loaded weight, it is also the heaviest aircraft to be built, to date. It can cruise at 500 mph.[15][16][17][18][19]
The largest military airplanes are the Ukrainian/Russian Antonov An-124 (world's second-largest airplane, also used as a civilian transport),[20] and American Lockheed C-5 Galaxy transport, weighing, loaded, over 765,000 pounds (over 380 tons).[19][21] The 8-engine, piston/propeller Hughes HK-1 "Spruce Goose," an American World War II wooden flying boat transport—with a greater wingspan (94 meters / 260 feet) than any current aircraft, and a tail-height equal to the tallest (Airbus A380-800 at 24.1 meters / 78 feet) – flew only one short hop in the late 1940s, and never flew out of ground effect.[19]
The largest civilian airplanes, apart from the above-noted An-225 and An-124, are the Airbus Beluga cargo transport derivative of the Airbus A300 jet airliner, the Boeing Dreamlifter cargo transport derivative of the Boeing 747 jet airliner/transport (the 747-200B was, at its creation in the 1960s, the heaviest aircraft ever built, with a maximum weight of 836,000 pounds (over 400 tons)),[21] and the double-decker Airbus A380 "super-jumbo" jet airliner (the world's largest passenger airliner).[19][22]