What event marked the beginning of the US Civil War? The main cause of the Civil War has been debated for years. The first military action was Confederate forces attacking Union Fort Sumter.
1 Lift Charts. 2  The lift curve is a popular technique in direct marketing. 3  The input required to construct a lift curve is a validation dataset that has been scored by appending to each case the estimated probability that it will belong to a given class.
The drag force is along (but reversed to) the flight path; the lift and side forces are at right angles to it. In a wind tunnel, the axial centerline of the test section defines the direction of the oncoming wind-the aerodynamic equivalent of the flight path.