Factor In Engine Misalignment Into Engine Model.

Ivan-Bao / WB-Dynamics

Whistler Blackcomb Matlab simulation

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Factor In Engine Misalignment Into Engine Model. #14

Open william-swy opened 3 years ago

william-swy commented 3 years ago

Factor in the possibility of engine misalignment into engine model. Refer to Propulsion for feedback.

At the moment the solution is pretty simplistic, simply assume that the horizontal component cancels out as the vehicle rotates so the effective thrust is just thrust original * cos(misalignment angle). Although if the induced roll from fin misalignment could be modeled the cos(misalignment angle) could be removed.

zamenshi commented 3 years ago

-possibility of axial engine misalignment (CoM not centred with engine) -possibility of angular engine misalignment (thrust vector not parallel to rocket)

william-swy commented 3 years ago

Some basic info/diagram on the details.

Currently an angular misalignment of 0.1 degrees or greater causes a significant change in apogee. Need to check if error in computation or if that is just reality. To be honest a 0.1 degree misalignment causing a significant change in apogee somewhat freaks me out.