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If ETS is 400kts, what is the acceleration associated with it?

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in Aircraft Performance by (558k points)
If ETS is 400kts, what is the acceleration associated with it?

(a) 40kts/min

(b) 4000kts/min

(c) 4kts/min

(d) 400kts/min

This question was posed to me during an online interview.

Enquiry is from High Performance Climb in section Climb and Descent Performance of Aircraft Performance

1 Answer

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The correct choice is (d) 400kts/min

Easy explanation: If ETS is 400kts, then the associated acceleration with it is 400kts/min. This is during the climb phase of the aircraft. Thus it concludes that the climb is the combination of the potential and kinetic energy.

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