Speed Stability

Speed stability can be simulated with a reversed autothrottle. [^1] Speed instability occurring below the minimum drag speed, speed instability can occur if a pilot tries to tightly control the approach path (high gain) [^1] This may occur when flying an approach below the minimum drag speed but above the speed for any adverse handling conditions. (stall, roll stability, vision etc.) a positive stick force feedback gives speed stability behavior[^3]. There is no advantage to positive or neutral speed stability when the aircraft is operated on the bottom or front side of the thrust required vs speed curve.[^3]

[[VTOL Aircraft Hover Model]] – has a speed-stability parameter in the A matrix.
EAP FCS – control system created behavior that mimicked the speed stability of conventional aircraft
[[Mechanical Flight Control Systems]] – Gearing ratio affects speed stability during flight
[[Stick Trim]] – Stick force trim is important for speed stability[^2]
Artificial Feel Systems – Spring can change speed stability
[[Shuttle Pitch SAS]]- no stick force gradient with speed

  • staplesSpeedStabilityLanding[^1]
  • airforcetestpilotschooledwardsafbcaVolumeIIFlying1988[^2]
  • ivlyersSpaceShuttleFlying[^3]