Objective

The student will become familiar with the situations leading to demonstration stalls, as well as how to execute and recover the maneuvers, illustrating the danger of near-stall conditions.

Elements

• stall aerodynamics
• MRA: 1,500 ft dual, 2,000 ft solo
• 15” of manifold pressure in the arrow during setup

Crossed-control stalls

• configure for landing, zero flaps, power idle
• trim for best glide (73 Warrior, 79 Arrow)
• establish a banked, descending turn that would overshoot a runway
• add excess rudder into the turn, ‘cheating’ final
• opposite aileron to maintain the bank at no more than 30°
• backpressure to maintain altitude
• recognition and recovery should be simultaneous

Elevator-trim stalls

• reduce airspeed to 75 knots
• gear and flaps down
• apply full aft trim
• apply full power
  • permit the aircraft to reach a high pitch attitude of no more than 30°
• maintain pitch attitude until stall
  • additional rudder input required for coordinated flight at high angles of attack
• recover with nose to the horizon
  • significant forward pressure required

Secondary stalls

• power-off configuration
  • gear and flaps down, throttle idle, final approach speed
• induce a full stall
• improperly recover
  • slight power increase, rapid and heavy backpressure
  • induce second imminent stall
• recover with nose below the horizon
  • full throttle, flaps one notch out, gear, flaps out

Accelerated stalls

• zero flaps, throttle idle
• airspeed to best glide (73 Warrior, 79 Arrow)
• establish a steep turn, 45° to 50°
• maintain altitude with backpressure
  • buffet indicates stall
• recover with forward pressure to break stall, wings level, throttle full

Schedule

Introduction	05
Main body	35
Application	10
Conclusion	05
Total	55 minutes

Equipment

• model aircraft
• whiteboard and markers
• Airplane Flying Handbook
• UND standardization manual

Instructor actions

Demonstrate, with the whiteboard and model aircraft, the setup, execution, and recovery for each demonstration stall. Using guided discussion, teach and evaluate the student’s preparation and ability to apply the maneuvers to real-world situations.

Student actions

Come prepared with reading and homework assignment done, and participate in the guided discussion with responses and questions.

Completion standards

This lesson will be complete when the student shows a working knowledge of demonstration stalls, and can explain the maneuvers with minimal instructor guidance.