Originally posted by SkyRock
Slap, being 100 feet above your opponent and 50mph faster is definitely and advantage. It's not what I would want but it is considered an "E" advantage! If I am below a guy on merge I feel comfortable! It is how I was taught in dueling!
Sorry, Skyrock, but I cannot agree with you. In the Head-On merge you described -- and assuming same aircraft -- the one who is only 100ft. higher and 50mph faster (as you state) does have a small E advantage, less from the altitude as Potential Energy and more from the established Kinetic Energy of speed.
HOWEVER, this is not a pure energy fight, this is a close-on angles/turn fight which means having the proper amount of E to turn at or close to Corner Velocity for the aircraft, which results in the tighest, quickest turn, is primary, not gobs of extra smash. (This includes considering Radial G effect in the vertical.)
Too much speed forces a wider Turn Radius (describing a larger Turn Circle) than necessary, taking longer to complete. Being both 100 ft. higher and 50mph faster, means if both pilots have the necessary speed to complete the manuever, and both execute a vertical Lead Turn at the pass, the lower/slower aircraft will have a smaller Turn Circle due to less speed going in, and the vertical separation due to his lower altitude, and thereby be able to turn into the other's greater Turn Circle. Therefore, the potential turning advantage is to the lower/slower aircraft, which is what this engagement is all about, at that moment.
I did not make this up, nor am I the absolute expert on all ACM. This is a resulting consensus that comes from extensive reading and study of several expert sources on ACM. Particularly on how speed and Radial G effects all types of turns.
Whether this is the reason you personally go low or not, this is the reason why in the standard dueling merge most should go pilots go low, and don't generally worry about the opponent having significantly higher speed at the merge. It can actually be a detriment. A pilot need only concern himself with beginning and maintaining sufficient speed throughout the merge and Lead Turn manuever.