Reciprocating Engine Exhaust Flashcards
The 2 types of exhaust systems used on piston engine aricraft
- Short stack 2. Collector system
The main disadvantage of a collector system-type exhaust on a piston aircraft, that turbocharging solves
Increased Exhaust back pressure
What does an increase in exhaust system back pressure do to horsepower?
decreases it
Exhaust collectors on piston engines are attached to each cylinder with brass____ or heat-resistant______
lock-nuts
The hardware that sections of the exhaust system are typically joined together with
Spring-loaded ball joints
What the spring-loaded ball joints found on the exhaust collector systems allow for
Thermal expansion
The exhaust collector on a radial type piston engine is called
Collector ring
The term for the piece of metal that surrounds the muffler
Shroud
The metal that typical exhaust systems are made of
CRES
Durring maintence and inspection of exhaust system, NEVER use these types of tools! (3)
- Galvanized tools 2. Zinc tools 3. Lead pencil
Bayonet
Shroud
Studs (knobs)
Some exhuast systems on piston aircraft use a coat of______
ceramic coating
Never use______ cleaners to clean ceramic coated exhuast
alkaline cleaners (ajax)
Escaping gas through a crack on an exhasut system of a piston engine will be evindenced by
gray streak on the outside of a muffler
Desribe the method of checking for leaks on an exhuast system via compressed air
- Seal up all compartments and pressurive with 2psi
- Spray soap-water solution
The system on a piston engine that serves the purpose of cooling but also exhuast
Augmentor tubes
The most likely area to find cracks on the muffler system
welds
Coke/ carbon buildup in an exhuast gas system can be an indication of ____ ______ malfunction
waste gate
What does the FAA say about repairing exhuast systems such as welded repairs out in the field
Advised to replace rather repair
galvonizing does what to a iron or steel
coats it with zinc
The type of connecting joint found on Collector ring tubes of radial engines
Slip joints
What can cause the waste gate to stick open or closed and cause an over-boost condition?
Exhuast deposit build-up
Identify the type of joint
Slip-joint
