DESIGN FOR SPIN

摘要

The Pilatus PC-21 advanced turboprop trainer was designed from the start to obtain desirable spin characteristics. This was achieved by conducting rotary and oscillatory balance wind tunnel tests very early in the program, by utilizing the wind tunnel data for real time flight simulation, and by comparing simulation results of a "proof-of-concept" configuration with flight tests of a prototype based on an existing design. A safe, efficient and highly successful flight test program dedicated to spin characteristics investigation confirmed the predictions based on wind tunnel testing and proved the validity of this "design for spin " approach.