Chapter 10

A reciprocating engine converts only about ____% of the heat energy of the burning fuel into mechanical energy.

The radial engine cowling that encloses the engine and provides for presssure cooling is called a ______ cowling.

_________ _______ are used between the cylinders of an air cooled engine to force the cooling air to flow between the cooling fins on the cylinders.

Cowl flaps on an air cooled engine are located in such a way that they produce a ____ pressure area to inrease the airflow through the cylinder fins.

Cowl flaps on an air cooled engine should be ____ during ground runup.

The velocity of the exhaust gases creates a ____ pressure at the inlet of the augmentor tube.

Accessories and local hot spots are typically cooled with additional air from ____ tubes dircected at them

Helicopter engines are usually cooled by a ____ system taht provides cooling airflow.

The thermocouples used to monitor cylinder heat temperature may be either of these designs.

If a cylinder head thermocouple lead is to long you should ___________ the excess.

Cracks in cylinder head fins can sometimes be ______ _______ to prevent further cracking.

Dents or bends in the cylinder head fins should be ________ if there is no danger of cracking.