Aircraft noise — is defined as sound produced by any aircraft or its components, during various phases of a flight, on the ground while parked such as auxiliary power units, while taxiing, on run up from propeller and jet exhaust, during take off, underneath and… … Wikipedia
Proximity fuze — A proximity fuze (also called a VT fuze, for variable time ) is a fuze that is designed to detonate an explosive device automatically when the distance to target becomes smaller than a predetermined value or when the target passes through a given … Wikipedia
Aircraft collision avoidance systems — Modern aircraft can use several types of collision avoidance systems to prevent unintentional contact with other aircraft, obstacles, or the ground:* Airborne Radar can detect the relative location of other aircraft, and has been in military use… … Wikipedia
proximity fuze — a design for detonating a charge, as in a projectile, within a predesignated radius of a target. Also called variable time fuze, VT fuze. [1940 45] * * * also called Vt Fuze, or Influence Fuze, an explosive ignition device used in bombs … Universalium
Aircraft emergency frequency — The aircraft emergency frequency (also known as guard) is a frequency used on the aircraft radio band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air… … Wikipedia
aircraft conflict alert — An alert issued by a controller to a pilot under his or her control that another aircraft (not under his or her control) is flying at an altitude that places both aircraft in an unsafe proximity to each other. The controller will offer the pilot… … Aviation dictionary
aircraft conflict/mode C intruder alert — An aircraft alert/mode C is issued to a pilot if the controller observes another aircraft that places the two in an unsafe proximity. When feasible, the controller will offer the pilot an alternative course of action … Aviation dictionary
Ground effect in aircraft — Aircraft may be affected by a number of ground effects, aerodynamic effects due to a flying body s proximity to the ground.One of the most important of these effects is the Wing In Ground effect, which refers to the reduction in drag experienced… … Wikipedia
chase aircraft — Aircraft flown in proximity to another aircraft, normally to observe its performance during training or testing. Also called chase … Aviation dictionary
Ground proximity warning system — (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. Another common name for such a system is ground collision warning system (GCWS). Commercial aircraft The system… … Wikipedia
