Civil Engineering - Airport Engineering - Discussion

Discussion Forum : Airport Engineering - Section 1 (Q.No. 13)
13.
Pick up the correct statement from the following:
The speed of the aircraft relative to the ground, is called cruising speed
The speed of the aircraft relative to wind, is called air speed
When wind is blowing the direction of the flight, air speed is less than cruising speed
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Gyan said:   8 years ago
How option C is correct?

When wind is blowing in the direction of flight air speed is ore than crushing speed.

Lav Yadav said:   5 years ago
Here, above two options are right but option c is wrong.

Because. Air speed = crushing speed + wind speed along flight direction.

Koshy Panicker said:   5 years ago
Airspeed is the vector difference between the ground speed and the wind speed. On a perfectly still day, the airspeed is equal to the ground speed. But if the wind is blowing in the same direction that the aircraft is moving, the airspeed will be less than the ground speed.

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