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The molecules of nitrogen, oxygen and other gases that make up air are moving around at incredible speeds, colliding with each other and all other objects. The higher the temperature, the faster the molecules are moving. As the air is heated, the molecules speed up, which means they push harder against their surroundings.
If the air is in a balloon, heating it will expand the balloon, cooling it will cause the balloon to shrink as the molecules slow down. If the heated air is surrounded by nothing but air, it will push the surrounding air aside. As a result, the amount of air in a particular "box" decreases when the air is heated if the air is free to escape from the box. In the free atmosphere, the air's density decreases as the air is heated.
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∙ 12y ago
Dry air is required in aircraft mainly because it helps prevent corrosion in the internal components and electrical systems. Moisture in the air can lead to condensation, which can cause damage and reduce the lifespan of sensitive equipment. Dry air also contributes to passenger comfort by reducing the growth of bacteria and mold, and prevents fogging on windows and instrument panels.
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Why is thrust so important in aviation?
In aviation, thrust is the force along the axis of the aircraft which moves it through the air. Together with drag, lift and weight, it is one of the four forces required to make an aircraft fly.
Is it possible to stop an aircraft in the air?
Stopping an aircraft in the air is not something we can normally do. An aircraft must move in air to create lift across its wings to stay aloft. There are some exceptions to the rule, like rotocraft (often called helicopters) and a few other aircraft. But it is the effect of the wing moving through the air that keeps "regular" aircraft flying.
What is the fastest plane and its speed?
The fastest, free-flying, free air-breathing aircraft in the world is currently the NASA X-43. It is an unmanned, single-use, aircraft. It's not powered by conventional jet engine, but instead uses a scramjet engine. It required an Air Force Boeing B-52 bomber to fire a Pegasus booster rocket with the X-43 attached to get the X-43 up to the required speed. The X-43 set a world record speed of 7,546 MPH (Mach 9.8) on November 16, 2004. The world's fastest manned aircraft is the North American X-15. Again, this aircraft is not powered by conventional jet engines. Instead it is powered by a rocket engine. It required an Air Force B-52 to carry the aircraft as well. On June 28, 1964, the X-15 set the record at 4,520 MPH (Mach 6.72). The Air Force SR-71 is the fastest, free-flying, free air-breathing aircraft having set an official record of 2,193 MPH (Mach 3.26) on July 28, 1976. It is a jet aircraft powered by another exotic engine, a hybrid turbojet/ramjet engine.
Is moist air heavier or lighter than dry air?
Moist air is heavier than dry air, because of the water.
What causes an aircraft to build up a static electrical charge?
As the aircraft travels at high speeds through the air, friction between the air and the body of the aircraft create charge. This is why aircraft's have special rubber wheels which contain a conducting material, to release the charge into the ground when they land.
Why do planes go so high?
As aircraft go higher the air becomes thinner reducing the energy required to push the aircraft forward
What is the required runway width for air force fighter aircraft?
There is no required width as far as I know. Different air forces may have their own standards and regulations covering it.
How many psi are required when testing a dry standpipe with air?
When testing a dry standpipe with air, 40 psi for 24 hours is required. In addition to this air test, the piping of the standpipe also needs to undergo a hydrostatic test for 2 hours at 200 psi.
What type of insurance policies are required for aircraft owners?
At the bare minimum aircraft owners are required to purchase liability insurance covering the operations of the aircraft. If the aircraft is financed they must buy hull replacement insurance is also required.
Why static air temperature is required by pilots?
The short answer is that aircraft performance (take off/landing distance, climb capability, engine power ...) depends on air temperature.
Why air conditioner is required in aircraft?
temperatures and humidity and control very necessary of lots of people in confined space such along time
Why cannot aircraft fly in space?
An aircraft is designed to fly in 'air' there is no 'air' in space.
Are Air Force aircraft military aircraft?
Not all aircraft in the Air Force are owned by the Air force or military. A lot of them are leased from companies like Boeing or Lockheed.
What is an air-to-air missile?
In air Combat, when an aircraft fires a missile at another aircraft, it is known as an Air to Air missile. The Sparrows and Sidewinders were air to air missiles
Why is thrust so important in aviation?
In aviation, thrust is the force along the axis of the aircraft which moves it through the air. Together with drag, lift and weight, it is one of the four forces required to make an aircraft fly.
Why can't an aircraft fly into the air?
A properly designed aircraft most certainly can fly into the air.
What training is required to fly a Cessna 172 Skyhawk?
The training that is required to fly a Cessna 172 Skyhawk is to be a Certified Flight Instructor, Air Transport Pilot, and to be experienced in Complex Aircraft Endorsement.
