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Why aircraft that travel at supersonic speeds cannot be heard on the ground?
Wiki User
∙ 13y ago
The properties of air flow at supersonic speeds is different than for subsonic speeds. So the design of the shape of the airplane and the inlets for the engines have to be different in order for it to fly at supersonic speeds.
Wiki User
∙ 13y ago
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What sound is produced when the shock wave forms at the nose of the aircraft traveling at supersonic speeds reaches the ground?
like thunder
What sound is produced when the shock wave formed at the nose of a aircraft traveling at supersonic speeds reaches the ground?
like thunder
Why is it not noisy traveling at supersonic speeds?
Untrue. Supersonic aircraft are very noisy, the only indication that the aircraft passes through the sound barrier is a slight increase in acceleration, the Mach meter number, and an announcement by the pilot.
How are aircraft speeds measured?
In nautical miles per hour for most purposes but in Mach number for supersonic flight.
Some aircraft can fly faster than the speed of sound what is such speed called?
They are called Supersonic aircraft. Some aircraft can only do that. Some planes have reached even Hypersonic speeds.
What is a benefit of the jet engine?
More power, the ability to travel at supersonic speeds (propeller aircraft are prevented from this, largely because the shock wave of the prop tips going supersonic if they did so would hold the aircraft back), more carrying capacity, the ability to use more aerodynamic designs.
What is an airplane take off speed?
varies greatly, depends on a lot of factors such as: air preasure, temperature, humidity, wind speed and direction, amount of fuel, cargo and passengers, angle of attack (angle of wings to air flow), use of flaps, drag (shape and size of the aircraft causes air resistance), condition of aircraft such as dents and abrasions and ice or other accumulation on the wings every aircraft has its own takeoff speeds that are found through test flights but are subject to change as the aircraft ages such as dents and other damage to the outer skin of the plane also aircraft speeds are not the same as a car which are ground speeds - aircraft speeds are calculated by its speed in relation to the air, not the ground - so its ground speed varies by the direction and speed of the wind - planes usually take off into the wind so its ground speed at takoff is its airspeed minus the wind speed so if a planes takeoff airspeed is 60 mph and the wind is 30 mph its ground speed is 30 takeoff speeds vary from small aircraft with high lift wings at about 30 mph to supersonic craft with small wings at around 200+ mph - aircraft speeds are usually stated in knots where 1 knot equals about 1.15 mph
How can you use Supersonic in a sentence?
At this rate, we will reach supersonic speeds within seconds.
How do aircraft designs allow aiarcrafts to travel at supersonic speed?
The properties of air flow at supersonic speeds is different than for sub-sonic speeds. So the design of the shape of the airplane and the inlets for the engines have to be different in order for it to fly at supersonic speeds. During WW2, many propellor aircraft could fly at or above supersonic speeds during a full-power dive. Many of these aircraft would begin to shudder and vibrate when it reached the sound barrier. This was due to flutter and/or stall of the wing tips. Also, the propellor could also flutter and some have even broken the blade or shook the engine loose. These problems were due to the airplane was NOT designed for high speed flight. For example. Normally, if air flows through a pipe and the pipe gets smaller, then the speed will increase. But for Supersonic flow, the reverse is true. As the area of the pipe get LARGER, then the flow will increase. This will change the way the inlet of a jet engine is designed.
What happens to a missile fired from a jet traveling at supersonic speeds?
It reaches it's target and detonates. -Almost all aircraft borne missiles travel at least 3,500 mph or more - far in excess of the aircraft sped.
What has the author A F Donovan written?
A. F. Donovan has written: 'Aerodynamic components of aircraft at high speeds' -- subject(s): Design and construction, Jet planes, Supersonic Aerodynamics
Why does a turboprop engine need a gear box?
Because the propeller would turn at excessive RPMS if it were coupled directly. If a propeller reaches supersonic speeds, it actually impedes the aircraft.
