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: aerobatic cruise
- Complete the stall/aerobatic checklist
- CODES: 4700
- Perform a clearing turn
- Roll out on or parallel to a section line
- Anticipate the section line to roll out on it vs. searching after your clearing turn
- Pick a reference point on the horizon 90° to either side of the nose in the direction you intend to perform the maneuver
- Recheck the wings level and clear the airspace above you
- ICS: "Entry altitude is..."
- Commence the maneuver by smoothly raising the nose while keeping the wings level
- As the exhaust stacks pass the horizon, roll and pull so the nose travels around in an arcing path toward the selected 90° checkpoint
- Begin your roll to 90° at 20° of pitch
- 1st checkpoint:
- Turn: 45°
- Nose: 60°
- AoB: 90°
- Continue rolling the aircraft at a constant rate until in a wings level, inverted attitude, heading directly at the 90° reference point on the horizon
- 2nd checkpoint:
- Turn: 90° (90°-100°)
- Nose: 0° (slightly above horizon) (looking at your 90° point)
- Bank: 90°
- Do not unload the aircraft, it should not slow by much if any at the top, the maneuver will be fine if the 60° of pitch was hit on the initial checkpoint
- 2nd checkpoint:
- The last half of the arc will be the same distance below the horizon that the first half is above the horizon
- If performed properly, 2.0 Gs should not be exceeded at any time during the maneuver
- The last half of the arc will be the same distance below the horizon that the first half is above the horizon
Barrel Roll Common Errors:
- Failure to adequately clear the area
- Excessive roll rate in the first 180° of roll, and hence reaching 90° heading change, inverted position (or short of it) with the nose already below the horizon
- This normally leads to a low and fast recovery
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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