The Directed Vector Approach (DVA) has resulted in a successful method of simulating helicopter rotor aerodynamics. It is based on a unique combination of blade element and Bailey theories, taking full advantage of the strong points of each.

Based on its implementation on the SFTS (Device 2B24), the advantage of the DVA technique can be summed up as follows:

1. It is well suited to multiple-cockpit applications.

2. It is relatively non-demanding in computer time and memory.

3. It provides high-fidelity static and dynamic performance, i.e., it yields accurate rotor force and moment calculations.

4) It results in a standard math-model, exclusive of stored rotor tables, which is applicable to all rotors and rotor configurations.