A propeller strikes an object while the engine is delivering more than idle power and the engine is stopped by the strike, as well as damage to the propeller, there may also beQuestion 21Select one:a.Oil leaks in the CSU as it absorbs all the shockb.Damage to the crankshaftc.Changes to the magneto timingd.Decreased valve clearance
Question
A propeller strikes an object while the engine is delivering more than idle power and the engine is stopped by the strike, as well as damage to the propeller, there may also beQuestion 21Select one:a.Oil leaks in the CSU as it absorbs all the shockb.Damage to the crankshaftc.Changes to the magneto timingd.Decreased valve clearance
Solution
The correct answer is b. Damage to the crankshaft.
Here's why:
a. Oil leaks in the CSU as it absorbs all the shock - This is not necessarily true. While the CSU (Constant Speed Unit) can absorb some of the shock, it doesn't mean it will always result in oil leaks.
b. Damage to the crankshaft - This is the most likely scenario. The crankshaft is directly connected to the propeller. If the propeller strikes an object and stops suddenly while the engine is delivering more than idle power, the sudden stop can cause a lot of stress on the crankshaft, potentially damaging it.
c. Changes to the magneto timing - This is unlikely. The magneto timing is not directly related to the propeller or the crankshaft. It's more related to the ignition system of the engine.
d. Decreased valve clearance - This is also unlikely. The valve clearance is not directly related to the propeller or the crankshaft. It's more related to the valve train of the engine.
Similar Questions
During pre take-off power checks, an indication that a CSU engine is not delivering full power could beQuestion 34Select one:a.Failure of rpm to drop when exercising the propellerb.Lower than normal map at check rpmc.Higher than normal map at check rpmd.Low oil pressure high oil temperature
If a failure in the propeller hub of a CSU caused the blades to lock into one pitch setting, the RPM wouldQuestion 16Select one:a.Slowly increase to the red lineb.Gradually decreasec.Change whenever engine power changedd.Fluctuate
One way a CSU propeller achieves higher efficiency than a fixed pitch propeller is byQuestion 33Select one:a.Increasing the propeller pitch as speed increases during a take-off to maintain a constant angle of attackb.Increasing the propeller pitch as speed increases during a take-off to increase the angle of attackc.Decreasing the propeller pitch as speed increases during a take-off to maintain a small propeller angle of attackd.Decreasing the propeller pitch as speed increases during a take-off to maintain a constant angle of attack
With a CSU propeller as altitude is increased a constant power output requires an increase inQuestion 35Select one:a.RPM and MAP using pitch control and throttleb.RPM onlyc.Manifold pressured.Throttle setting and richer mixture
Loss of governor oil pressure in a non-counter-weight fitted propeller would be indicated byQuestion 32Select one:a.Decreasing RPM increasing MPb.Increasing RPM decreasing MPc.Constant RPM increasing MPd.Constant RPM decreasing MP
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