Question

If actual speed of aircraft is 100 m/s and is flying at certain altitude with density ratio of 0.3 then, find equivalent at speed at that altitude.

(a) 54.77m/s

(b) 125ft/s^2

(c) 1.2M

(d) 1.5M

I have been asked this question in homework.

Enquiry is from Air Loads in section Structures and Loads of Aircraft Design

Answer 1

The correct choice is (a) 54.77m/s

The explanation: Equivalent airspeed = actual speed * (Density ratio)^0.5

= 100*(0.3^0.5) = 54.77 m/s.