WARNING:
All procedures are GENERALIZED.
Fly the maneuver in accordance with the Pilot Operating Handbook (POH)
and/or current Standard Operating Procedures (SOPs)
Stall/Aerobatic Checklist:
- Cockpit: Clear of lose objects
- Seat Belts: Locked and tight
- Autoignition/Fuel Pump: On
- Engine Instruments: Checked
- Report: Stall/aerobatic checklist complete
Additional Considerations:
- Ensure pockets are zipped and the map-case is secured to prevent loose items from going airborne
T-34C PROCEDURE:
- Give an instrument, gas, and position report (IGP)
- CONFIGURATION: transition to aerobatic cruise
- Complete the stall/aerobatic checklist
- CODES: 4700
- Perform a clearing turn
- During the last 90° of turn, lower the nose slightly and accelerate to 200 KIAS
- Roll out of the clearing turn on or parallel to a section line with 200 KIAS
- Anticipate the section line to roll out on it vs. searching after your clearing turn
- The increased airspeed will require a slight amount of left rudder to maintain balanced flight
- Recheck the wings level and clear the airspace above you
- ICS: "Entry altitude is..."
- PULL: Commence the AGSM and immediately start a smooth straight pull-up, accelerating to 3.5Gs within 2-3 seconds
- LEVEL: Recheck the wings level as the nose passes through the horizon
- The initial pull will be strong, but will need to be relaxed toward the top to keep a constant rate
- BALL: Increase right rudder pressure as airspeed decreases
- CHECK: Shortly after passing the vertical position, tilt your head back and visually located the opposite horizon
- Correct with aileron, as necessary, to maintain the wings parallel to the horizon
- Check the nose in relation to the section line and correct directional deviations, as necessary, by adjusting the rudder input
- As the nose approaches a point 20° above the opposite horizon "canopy bow" on the horizon, slow the rate of nose movement by neutralizing back stick pressure
- Commence an aileron roll in either direction to the upright position
- Take out rudder smoothly
- Anticipate the need for slight forward stick pressure as the aircraft passes 90° of roll
- The maneuver is complete when the aircraft is, once again, in the level flight attitude on the reciprocal heading
- The airspeed should be approximately 100 KIAS
- The nose attitude will, therefore, be slightly high
- It is common to smell gas fumes after the immelmann; this is normal as long as they go away after a few minutes
Immelmann Common Errors:
- Failure to adequately clear the area
- Excessive G causing a large loss of energy before reaching the top
Conclusion:
- Remain mindful that performance calculations are usually more optimistic than performance in reality
- Consider actual versus realized performance when doing any performance calculations
- Consider practicing maneuvers on a flight simulator to introduce yourself to maneuvers or knock off rust
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