AERM - 1344 Aircraft Reciprocating Engines Questions And Answers
Oral - What is the main advantage of a horizontally opposed engine over a radial engine for powering
modern aircraft? - ANS-Smaller frontal area and is easier to streamline
Oral - How many throws are there in the crankshaft of a six cylinder horizontally opposed engine
engine? - ANS-Six
Oral - What kind of connecting rod management is used in a radial engine? - ANS-- A master rod
connects the single throw of the crankshaft with a piston.
- All Others are connected with link rods
Oral - Of what material are most piston rings made? - ANS-Cast Iron
Oral - What is the reason for using hydraulic valve lifters in an aircraft engine? - ANS-Lifters keep the
clearance out of the valve operating mechanism decreasing wear of train components
Oral - At what speed does the camshaft turn, relative to the crankshaft speed in horizontally opposed
engine? - ANS-Camshaft turns at half of the crankshaft speed
Oral - What kind of main bearings are used in a horizontally opposed engine? - ANS-- Steel backed
- Lead Alloy
Oral - On what stroke is the piston of a reciprocating engine when the intake valve begins to open? -
ANS-Exhaust stoke
Oral - On what stroke is the piston of a reciprocating engine when the exhaust valve begins to open? -
ANS-Power stroke