F-16 Aggressor cp_snapviews_100
Exhibit - F-16 Aggressor

The Flight Model

From the manual

Tom Low :

" Unlike most conventional aircraft, the F-16 was designed with "relaxed static stability", which means that without the use of a high speed computer continuously adjusting the positions of the control surfaces, the plane would be uncontrollable. This allows the plane to turn more quickly than its conventionally controlled counterparts. The use of this sophisticated control technique allows the designers to tailor the aircraft's handling characteristics in almost any manner they please. The F-16 was designed to respond very differently in different phases of flight. Lower the landing gear, and almost every handling parameter, from the roll sensitivity, to the interpretation of control stick pitch commands change. Each change is faithfully reproduced in this simulation.

The flight control system also monitors the pilot's performance, effectively preventing the pilot from losing control of the aircraft. Angle of attack limiting, G load limiting, roll rate limiting, and rudder authority limiters are all provided, according to exactly the same "schedule" or function contained in the F-16 FLCS. To reproduce this behaviour, the flight model designers began by studying the block diagram of the actual F-16 FLCS control system.

Each mode was carefully reproduced, and like the real F-16, the FLCS system software in this flight model interprets the commands from your joystick, and taken with other simulation variables calculated by the aerodynamic model, such as angle of attack (AoA) and the roll, pitch and yaw rates, determines the actual deflection of controls surfaces. These surface positions feed into the non-linear aerodynamic model, which calculates the moments, forces, accelerations, velocities, and ultimately the position and orientation of the simulated aircraft.

This, together with a comprehensive atmospheric model, and a similarly detailed treatment of the F100-PW-200 Turbine engine, landing gear dynamics, fuel management system, aerodynamics of ground effect, and wind, results in a simulator which "hits all the numbers", and behaves so much like the actual F-16, that aircraft pilots who have flown our simulator can instantly sense a "feel" to the model which comes closer to reproducing the sensations of flight than any consumer product yet produced. "

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