@mike sierra
1/Aerodynamic Centre is the point where lift acts that is CP.
2.for a symmetrical airfoil-yes there will be no pressure diffrence and zero lift produced.
=>for a asymmetrical aerofoil-ther will be lower pressur above the upper wing surface and higher below .
=>for a asymmetrical aerofoil lift is zero at -4 deg AOA.
3.for a simultaneous 3d fix -4 satellites are reqd..