PP Engine Cooling Systems

The primary purpose of baffles and deflectors installed around cylinders of air-cooled aircraft engines is to

What is the purpose of an augmenter used in some reciprocating engine exhaust systems?

Aircraft reciprocating engine cylinder baffles and deflectors should be repaired as required to prevent loss of

Cracks in cooling fins that do not extend into the cylinder head

Which of the following should a mechanic consult to determine the maximum amount of cylinder cooling fin that could be removed when cracks are found?

A bent cooling fin on an aluminum cylinder head should be

Where are cooling fins usually located on air-cooled engines?

How do cowl flaps aid in cooling a horizontally opposed aircraft engine?

The position of the cowl flaps during normal cruise flight conditions is

Generally, a small crack just started in a cylinder baffle

Which of the following assists in removing heat from the metal walls and fins of an air-cooled cylinder assembly?

During ground operation of an engine, the cowl flaps should be in what position?

The component(s) in a turbine engine that operate(s) at the highest temperatures is/are the

During an operational check of an electrically powered aircraft engine cowl flap system, the motor fails to operate. Which of the following is the first to be checked?

(1) Some aircraft exhaust systems include an augmenter system to draw additional air over the engine for cooling.

(2) Augmenter systems are used to create a low pressure area at the lower rear of the aircraft engine cowling. 

Regarding the above statements,

Which of the following defects would likely cause a hot spot on a reciprocating engine cylinder?

What part of an air-cooled cylinder assembly has the greatest fin area per square inch?

Reciprocating engines used in helicopters are cooled by

The greatest portion of heat generated by combustion in a typical aircraft reciprocating engine is

A broken cooling fin on a cylinder head

An engine becomes overheated due to excessive taxiing or improper ground runup. Prior to shutdown, operation must continue until cylinders have cooled by running engine at

Cylinder head temperatures are measured by means of an indicator and a

High cylinder head temperatures are likely to result from

The purpose of an intercooler when used with a turbocharger is to cool the

Prolonged idling of an engine will usually result in

The most common method and generally the best conduction of heat from the inside of a cylinder barrel to the cooling air is accomplished by

What is the function of a blast tube as found on aircraft engines?

Which statement is true regarding the air passing through the combustion section of a jet engine?

Which of the following results in a decrease in volumetric efficiency?

The undersides of pistons are frequently finned. The principal reason is to

What is the position of the cowl flaps during engine starting and warmup operations under normal conditions?

Increased engine heat will cause volumetric efficiency to