aj114

why isnt it point up for instance? also in regards to this: Cp is to lift, thrust line is to spinner of the prop, cg is to weight drag line is to what?? thats in regards to couplings in stability thanks..

so what is that force that they have an arrow pointing down called? gravity?

hi i am new to this forum i currently hold a ppl and ive done ny cpl theory i still have many un answered questions... and found this forum with you all to be of great help! ok here we go.. ma first question: in regards to stability, what is meant when they say aerodynamic force (tailplane) arrow down mean? is that just weight and giving 0 lift thus the force of its weight?