I've been trying to conceptualise accurately the lift forces upon an aircraft in physics terms, for a simulator flight manual I've been working on. What I've got from some rudimentary flight training is that low pressure above the wing rather than high pressure below it causes lift, obviously because the straight line path of air going over the wing is disrupted by the aerofoil plane. When you go faster you increase your lift. To fly higher you need higher (true) airspeeds. So this is what I've assumed. The low pressure area above the wing is a form of buoyancy. This is what lifts the aircraft, the wings of course forming the threshold of this buoyancy and being lifted along with it. When you go faster, it is as if the air pressure has increased due to your higher airspeed. So, since the mass of the aircraft hasn't (consequentially) increased, the same amount of buoyancy has more effective lift. What is the industry standard math for this? Secondly, is this effect related to moment of inertia? I figured that due to the curvature of the Earth and its atmosphere and gravity an aircraft is really striking at a body of atmosphere with angular momentum. I recognise I may be well off on most counts.