AM.III.L.K3
KnowledgeNoise suppression theory, components, and operation (e.g., mufflers, hush kits, augmenter tubes).
From the FAA library
- Chapter 3: Induction & Exhaust Systems › Engine Noise Suppression
Engine Noise Suppression Aircraft powered by gas turbine engines sometimes require noise suppression for the engine exhaust gases when operating from airports located in or near highly populated areas. Several types of noise suppressors are used. A common type ... noise suppressor is an integral, airborne part of the aircraft engine installation or engine exhaust nozzle. Engine noise comes from several sources on the engine, the fan, or compressor and the air discharge from the core of the engine. There…
- Chapter 3: Induction & Exhaust Systems › Reciprocating Engine Exhaust Systems › Reciprocating Engine Exhaust System Maintenance Practices
Reciprocating Engine Exhaust System Maintenance Practices Any exhaust system failure should be regarded as a severe hazard. Depending on the location and type of failure, an exhaust system failure can result in carbon monoxide poisoning of crew and passengers, partial ... complete loss of engine power, or an aircraft fire. Cracks in components, leaking gaskets, or complete failure can cause serious problems in flight. Often, these failures can be detected before complete failure. Black soot around an exhaust gasket shows…
- Chapter 3: Induction & Exhaust Systems › Reciprocating Engine Exhaust Systems
short stack system is relatively simple, and its removal and installation consists essentially of removing and installing the hold-down nuts and clamps. Short stack systems have limited use on most modern aircraft. In Figure 3-38, the location ... typical collector exhaust system components of a horizontally opposed engine is shown in a side view. The exhaust system in this installation consists of a down-stack from each cylinder, an exhaust collector tube on each side of the engine…