Question

If taper ratio is T and span is b with surface area as S then the root chord is _____

(a) Croot = 2*S / (b*(1+T))

(b) Croot = 2*S / (b*(3+T))

(c) Croot = 2*S / (2b*(1+T))

(d) Croot = 2*S / (1+T)

This question was addressed to me during an internship interview.

Asked question is from Wing Geometry-1 in section Airfoil and Geometry Selection of Aircraft Design

Answer 1

Correct option is (a) Croot = 2*S / (b*(1+T))

The best explanation: Taper ratio represents how much wing is tapered. For any given area S, span b and taper ratio T, root chord is given by,

Croot = 2*S / (b*(1+T)). The value of root chord will be different for different aircrafts.