Hello, my brother and I are designing a rocket that is to be controlled by a GPS. Therefore we need to know how much the max force the stepper motors for the flaps/wings need to pull at the following example.

The rocket will have 4 of these in the rear that rotates(flaps) out to max 45 degrees. The motor needs to pull these back.
The dimensions:
Width: 3cm
Length: 15cm
Fixtured in a 15 degree sloped angle

The rocket will move with a velocity of 150m/s or 540km/h.

An example of the rocket has been attached.

Thank you very much !
Anders M. Hansen

Andersmh asked