- Отрасли: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
A system for cooling the air in the cabin of a turbine-powered aircraft.
Compressor bleed air passes through a primary heat exchanger and gives up some of its heat. It then passes through a centrifugal compressor driven by an expansion turbine. The compressor uses energy from the turbine to raise the temperature and pressure of the partially cooled bleed air. This additional heat is removed as the air flows through a secondary heat exchanger. The air then flows through the expansion turbine where it gives up still more of its energy as the turbine drives the compressor.
When the air, with much of its energy removed, leaves the turbine, it expands and its pressure and temperature drop further, providing cold air for cooling the cabin.
Industry:Aviation
A system for monitoring the performance of a turbine engine by routine comparison of performance parameters with a base line of the same parameters established when the engine was new or newly overhauled. EGT, RPM, fuel flow, and oil consumption are monitored on every flight, and the difference between the current indication and the base line is plotted. Any deviation from a normal increase or decrease warns the technician of an impending problem.
Industry:Aviation
A system in an aircraft carburetor used to supply additional fuel to the engine when the throttle is suddenly opened. If an acceleration system were not used, the engine would get a momentarily lean mixture until enough air is pulled through the carburetor to meter the correct amount of fuel into the cylinders.
Industry:Aviation
A system in an aircraft that warns the flight crew of the presence of a fire in any of the engines, the cargo area, or the wheel wells.
Industry:Aviation
A system in which a mixture of water and methanol (methyl alcohol) is injected into the compressor inlet and/or the combustion chamber of a turbine engine.
The W/M injection increases the thrust by increasing the mass of the air flowing through the engine. It also cools the gases flowing through the turbine so more fuel can be burned before reaching the limiting turbine inlet temperature. W/M injection is not used on modern turbine engines.
Industry:Aviation
A system of auxiliary thrust used for heavily loaded aircraft to assist their takeoff. JATO units are small rocket engines fastened to the aircraft structure when a difficult takeoff is to be made.
The JATO units are fired the moment the aircraft rotates for takeoff, and the boost from the rocket engines provides the additional thrust needed to get the aircraft airborne. JATO is more properly called RATO for Rocket Assisted TakeOff.
Industry:Aviation
A system of aviation breathing oxygen in which a metered amount of oxygen flows continuously into the mask. A rebreather-type mask is used with a continuous-flow system. The simplest form of continuous-flow oxygen systems regulates the flow by a calibrated orifice in the outlet to the mask, but most systems use either a manual or automatic regulator to vary the pressure across the orifice proportional to the altitude being flown.
Industry:Aviation
A system of changing the voltage of a radio-frequency carrier to allow it to carry information.
The amplitude of the carrier is changed (modulated) by superimposing an information-carrying audio-frequency signal on it. The amplitude of the modulated carrier varies in the same way as the amplitude of the audio-frequency information wave.
Industry:Aviation
A system of communications that produces signals that can be both seen and heard. Television is a form of audiovisual communications system.
Industry:Aviation
A system of control in a manufacturing company that is responsible for the quality of the product produced by the company. The inspection department is normally a part of the quality control department.
Industry:Aviation
