DGCA CPL Technical General Practice Questions - DGCA Commercial Pilot License (CPL) Technical General Exam

What is the significance of the Best Glide Speed ($V_{g}$) in terms of drag?

It is the speed at which parasite drag is at its absolute minimum. It is the speed where total drag is at its minimum, which occurs where parasite drag and induced drag are equal ($L/D_{max}$). It is the speed where induced drag is at its absolute minimum. It is the speed at which lift coefficient is at its maximum value.

Correct Answer:

It is the speed where total drag is at its minimum, which occurs where parasite drag and induced drag are equal ($L/D_{max}$).

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