Typical takeoff air speeds for jetliners are in the range of 240–285 km/h (130–154 kn; 149–177 mph). Light aircraft, such as a Cessna 150, take off at around 100 km/h (54 kn; 62 mph). Ultralights have even lower takeoff speeds.
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A typical takeoff speed for a Boeing 747 is around 160 knots (184 mph), depending on the jet's wing flap configuration, the number of passengers aboard, and the weight of their luggage, fuel load, current weather conditions, and other factors.
Landing. While landing, speed is largely affected by the aircrafts current weight, commercial airplanes typically land between 130 and 160 mph (112 to 156 knots).
What's the slowest a plane can fly? The Ruppert Archaeopteryx has a certified stall speed of 30–39 kilometres per hour (19–24 mph). The Vought XF5U can fly as slow as 32 kilometres per hour (20 mph). The Tapanee Pegazair-100 stall speed is 45 kilometres per hour (28 mph).
The answer is around 500 mph in still air. Jets often cruise near their maximum speed; in those cases they cannot speed up without exceeding limitations. Exceeding a limitation is unsafe and is contrary to the regulations.
The North American X-15 may be the fastest plane in the world, with speeds at 4,520 mph and Mach 5.93. It's an experimental aircraft used and powered by NASA and USAF.
The biggest reason for flying at higher altitudes lies in fuel efficiency. The thin air creates less drag on the aircraft, which means the plane can use less fuel in order to maintain speed. Less wind resistance, more power, less effort, so to speak.
As the plane descends into ground effect, it may actually accelerate if the engines are producing enough thrust, since in ground effect the plane requires much less power to keep flying. Power from the engines will translate into speed, if not height.
Airplane wings are shaped to make air move faster over the top of the wing. When air moves faster, the pressure of the air decreases. So the pressure on the top of the wing is less than the pressure on the bottom of the wing. The difference in pressure creates a force on the wing that lifts the wing up into the air.
The Boeing 747 is a four-engine wide-body jet airliner that has been in service since 1970. It is one of the most recognizable and iconic aircraft in the world, and has earned the nickname “Queen of the Skies”. The Boeing 747 can fly on one engine only, but it is not recommended or desirable to do so.
For example, with a glide ratio of 15:1, a Boeing 747-200 can glide for 150 kilometres (93 mi; 81 nmi) from a cruising altitude of 10,000 metres (33,000 ft).
At any given time, there are between 8,000 and 13,000 airplanes in the air. Over 30,000 flights with two million passengers on board take off every single day in the United States alone.
Mach 10 speed has never been achieved by a manned aircraft, though, so it has never been tested. Mach 10 has, however, been achieved by a spacecraft - on November 16, 2004, NASA launched the X-43A, an air-breathing hypersonic vehicle, and was able to reach real Mach 10 while being pushed into the atmosphere.
Private aircraft can travel faster than commercial airliners. Part of this has to do with the weight of the jet itself. Private jets weigh less than large commercial aircraft, allowing them to ascend and descend faster than commercial jet.
Rockets definitely fly faster than jets. A supersonic airplane can fly faster than the speed of sound (1,236 kmh or 768 mph). The SR-71 Blackbird holds the record for fastest jet, flying at 3,418 kmh (2,124 mph). The Space Shuttle, though, accelerates to 29,000 kmh!
In jet aircraft, an overspeed results when the axial compressor exceeds its maximal operating rotational speed. This often leads to the mechanical failure of turbine blades, flameout and total destruction of the engine.
Fuel tanks of large planes, such the Airbus A380 and Boeing 747-800, can hold up to 140,000 and 216,000 liters of gasoline, respectively. These aircraft are able to nonstop flight for as much as 16 to 18 hours, achieving as much as 15,000 kilometers.
Technically this is the so-called 'stall speed', where air passes over the wings fast enough to sustain altitude, and for small planes this can be less than 50km/h (31mph). But at such low speeds, the aircraft is easily destabilised, and could fail to leave the runway.