Stall Scenarios

081-03-03Pablo Asensio Martínez2026-04-011 min

Accelerated Stall (High G)

Stalling at a speed higher than normal $V_{s1g}$ due to increased Load Factor.

  • Turns: In a 60° bank level turn, Load Factor is 2.0g. Stall speed increases by $\sqrt{2} = 1.41$ (41% higher).
  • Recovery from Dive: Pulling up abruptly increases G-load, potentially causing a secondary stall.

Deep Stall (Super Stall)

A condition in T-tail aircraft where the turbulent wake from the stalled main wing blankets the tailplane/elevator.

  • Effect: The elevator becomes ineffective. The pilot cannot pitch down to recover.
  • Solution: Stick Pusher (activates before deep stall is reached) or designing the tail out of the wake.

Environmental Factors

  1. Icing: Increases weight (higher stall speed) and disrupts airflow (lower $C_{L_{max}}$). Can lead to stall at speeds well above normal warning thresholds.
  2. Windshear: A sudden loss of headwind causes an immediate loss of IAS, potentially dropping below $V_{stall}$.
  3. Heavy Rain: Acts like icing (roughens surface) and adds weight/momentum to the air (downward force).