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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Principles of Flight > Compare otherwise similar twin-engine aeroplanes with wing-mounted engines, one with jets and the other with counter-rotating propellers. Assume the propeller slipstream adds wing lift behind each operating engine, while the jets have negligible such effect. After loss of one engine, considering the additional rolling moment from asymmetric slipstream lift:

168 - ATPL Question Bank in English - Compare otherwise similar twin-engine aeroplanes with wing-mounted engines, one with jets and the other with counter-rotating propellers. Assume the propeller slipstream adds wing lift behind each operating engine, while the jets have negligible such effect. After loss of one engine, considering the additional rolling moment from asymmetric slipstream lift:

Question 168 - Principles of Flight - ATPL - Airline Transport Pilot Licence

Counter-rotation cancels the rolling moment from the unequal wing lift.

The same roll tendency for both aeroplanes.

More roll tendency for the propeller aeroplane.

Less roll tendency for the propeller aeroplane.

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