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5 Cards in this Set

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What is the main advantage of a horizontally opposed engine over a radial engine for powering modern aircraft?
horizontally opposed has smaller frontal area and is easier to streamline than a radial
How many throws are there in the crankshaft of a six-cylinder horizontally opposed engine?
Six
What kind of connecting rod arrangement is used in a radial engine?
A master rod connects the single throw of the crankshaft with a piston. All of the other pistons are connected to the master rod with link rods.
Of what material are most piston rings made
Gray cast iron.
What is the reason for using hydraulic valve lifters in an aircraft engine?
keeps all of the clearance out of the valve operating mechanism. This decreases the wear of the valve train components.