The world’s largest aircraft, built by the U.S. company Stratolaunch, took its first flight on 13 April, 2019.
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The first flight of the plane lasted for 2 and a half hours, during which it flew at an altitude of 17,000 feet above the Mojave desert; the maximum speed of the plane was 189 miles per hour.
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This plane has six Boeing 747 engines, two fuel tanks, and weighs 500,000 pounds.
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Its length is 238 feet, and its wingspan is 385 feet—wider than a football field.
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The plane has two cabins, but only one of them is used during flight.
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Paul Allen, one of the founders of Microsoft, came up with the idea of the Stratolaunch in 2011.
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The aircraft was originally designed as an airborne orbital launch system to carry rockets and satellites at altitude and then launch them into low-Earth orbit.
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However, after the Stratolaunch company was sold to new owners in October 2019, the aircraft was repurposed to serve as a mobile launch pad for hypersonic vehicles.
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Hypersonic vehicles are mobile craft that travel at least five times the speed of sound.
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Warning: these questons and answers are not all representative of the way questions will be asked and answered in the pilot, because some questions are compound and some answers do not include citations.

Q: How long is the aircraft?
A: 238 feet

Q: What is the aircraft’s wingspan?
A: 385 feet

Q: What is this wingspan wider than?
A: A football field

Q: How much does the aircraft weigh?
A: 500,000 pounds

Q: How many engines does it have?
A: six

Q: What type of engines are they?
A: Boeing 747

Q: How many fuel tanks does it have?
A: two

Q: At what altitude did it fly on its first test flight?
A: 17,000 feet above the Mojave desert

Q: What was the maximum speed it achieved on its first test flight?
A: 189 miles per hour

Q: How many cabins does it have?
A: Two

Q: How many of the cabins are used during flight?
A: one

Q: What was the original purpose for this aircraft?
A: To carry rockets and satellites and launch them into low-Earth orbit

Q: After the company was purchased in October 2019, what became the aircraft’s new purpose?
A: A mobile launch pad for hypersonic vehicles

Q: What are hypersonic vehicles?
A: Mobile craft that travel at least five times the speed of sound