Module 11: Aeroplane Aerodynamics, Structures and Systems2 Sep 2026
mixing up mass balance and aerodynamic balance
Exam question
What does the term mass balance mean?
- A.Weights used to balance any primary control surfaceCorrect
- B.Aerodynamically shaped weights attached to the flaps
- C.Very heavy weights attached to the nose of the aircraft
Explanation
Mass balance means weights used to balance a primary control surface about its hinge.
Rui
asked · 2 Sep 2026
doing m11 practice and keep getting these two confused. mass balance is the weights forward of the hinge line so the surface doesn't flutter, right? and aerodynamic balance (horn, inset hinge etc) is a completely different thing, it's just there to make the surface easier to move for the pilot and has nothing to do with flutter. keep seeing questions that seem to test one when i think it's actually asking about the other. is there an easy way to keep them straight