Question

If a wing has span of 12m. Find the approximated length of the aileron of starboard wing.

(a) 2.4m

(b) 20m

(c) 15m

(d) 25m

This question was posed to me in homework.

Origin of the question is Control-Surface Sizing in section Initial Sizing of Aircraft Design

Answer 1

Right option is (a) 2.4m

Explanation: For a typical wing, ailerons are extended from 50% of span to 90% of span.

Given, Span of wing b=12m. Since we need to find aileron length at one wing we will divide total wing span by 2.

Hence span of starboard wing = 12/2 = 6m.

Length of aileron at starboard wing (right wing) = |difference between 50% and 90% of span|

= |50% of 6m – 90% of 6m| = |0.5*6-0.9*6| = 2.4m.