Aircraft Definition and 354 Threads

An aircraft is a vehicle or machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Common examples of aircraft include airplanes, helicopters, airships (including blimps), gliders, paramotors, and hot air balloons.The human activity that surrounds aircraft is called aviation. The science of aviation, including designing and building aircraft, is called aeronautics. Crewed aircraft are flown by an onboard pilot, but unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, such as lift type, aircraft propulsion, usage and others.

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  1. M

    Strategies to detect stealth aircraft using passive radar technology.

    I am trying to gain an understanding of how Stealth technology defeats conventional radar, and wondering about strategies to get around it. In addition to explaining the basics of the Stealth technology, can someone explain why the planes are not simply detected by infrared sensitive devices...
  2. P

    Aircraft Speed with Wind: Calculating New Velocity

    A jet airliner moving initially at 795 mph to the east where there is no wind moves into a region where the wind is blowing at 140 mph in a direction 56 degrees north of east. What is the new speed of the aircraft with respect to the ground? Answer in units of mph. how can i start this off
  3. R

    Something just thought of about a possible Aircraft

    Can someone tell me what would happen if you made an oval light aluminum container, filled it with lighter than air compressed gas like helium, strapped a rocket to the end of it, and sent it flying. Let's say you add a rudder or tale to the end of it and then a gyroscope to the center of it...
  4. Andre

    Which law explains the best why an aircraft can fly?

    Just a little question again. Which law explains the best why an aircraft can fly? A The ideal gas law of Boyle Gay Lussac. B The secound law of Newton. c The basic law of aerodynamics of Bernouilli.
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