Aircrafts use 400 Hz power in their electric systems because the power supplies needed are very small and lightweight. This is necessary on aircraft because of the need to control the exact weight of all onboard objects. 400 Hz power electronics are not the most effective, but because they are so lightweight, they are a popular choice on aircraft.Know More
400 Hz have smaller and more lightweight power supplies than do the more common 60 Hz power settings. This means that they take up less space on the aircraft. Even though 400 Hz power supplies are more inefficient, most design engineers are willing to sacrifice electronic efficiency for space and low weight due to the need for an aircraft to mitigate weight and space issues. The effects of weight on an aircraft are exacerbated because additional weight requires more fuel to keep it airborne. This additional fuel further increases the overall weight of the vehicle.
Because modern airplanes use a number of different electronics and electronic generation devices onboard, the choice of 400 Hz power has a serious impact on the overall design of the vehicle. While aircraft electrical designs include AC and DC power generation sources, typically commercial aircraft use AC power supplying 115 volts at 400 Hz to be able to run flight instruments, avionics, lighting and other electrical equipment.Learn more in Airplanes & Helicopters
A ramp agent at the airport loads and unloads luggage and other cargo from the aircraft. The agents transfer luggage from conveyor belts to carts or vehicles.Full Answer >
Airplanes fly because the design of the wings produces lift that counterbalances the weight of the aircraft. Air flows more rapidly over the top of the wing than underneath it, which reduces the air pressure above the surface. The higher pressure below, exerted over the surface of the wing, pushes the aircraft upwards. Achieving lift requires enough forward speed to keep the air moving fast enough to create this force.Full Answer >
Most airplanes have their fuel tanks located in the wings, but some aircraft will also have fuel tanks within their air frame. The positioning of the fuel tanks within the wings is done to help with a stable center of gravity, which is due to the weight of the fuel on both sides of the aircraft being even.Full Answer >
Any aircraft that is heavier than air, can sustain flight due to its design, yet does not use an engine can be classified as a glider. There are three major categories of glider: sailplanes, paragliders and hang gliders.Full Answer >