Question

In linear interpolation method, new airfoil is created as ____________

(a) weighted average of root and tip airfoil

(b) heavier than the root airfoil always

(c) higher chord than root always

(d) lower chord than tip always

I got this question in a national level competition.

I want to ask this question from Configuration Layout topic in portion Configuration Layout and Loft of Aircraft Design

Answer 1

Correct option is (a) weighted average of root and tip airfoil

The best I can explain: Linear interpolation method is used to create new airfoil station between root and tip airfoil. In general, root airfoil is based on performance and tip is selected for stall properties. Linear interpolation will give new airfoil as weighted average of the root and tip airfoil.