Ground Training Lesson 20
1.0 Hours Ground
by Philip Greenspun and Kasim Te; revised July 2008
Developed for students at East Coast Aero Club which operated under FAR Part 141 from July 2008 through July 2010.
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Objective
This lesson introduces turbine helicopters, covering systems and operational differences from piston helicopters.
Elements
Turbine Engines
- Capabilities, advantages, and disadvantages
- Comparison to piston engine's four cycles: instake, compression, power, exhaust
- Major components
- Compressor
- Hot Section: Burner, Igniter, Power Turbine
- Fuel Control
- Bleed Air Systems
- Torque: measurement and limits
- Hot section temperatures: measurement, limits, and cockpit gauges and warning lights
- Effect of density altitude on power
- Cooling
- Cycles (logging, limits)
Turbine Helicopter Systems
- Droop compensation
- Governor/Linear actuator
- Short shaft
- Free wheeling unit
- Fuel systems
- fuel types, temperature, and weight
- cold weather considerations and PRIST
- Fuel cells / boost pumps
Turbine Helicopter Operations
- Hot starting
- Hung starting
- Throttle response and spool-up lag
- Cooldown/shutdown procedures
Completion Standards
This lesson will be complete, when by oral examination, the student
displays a commercial pilot level of understanding of the material
presented.
Study Assignments
- Rotorcraft Flying Handbook -- Chapter 4, section on turbine engines
Instructor's Evaluation and Recommendations:
Ground Training Record, Lesson 20
Any deviations from the completion standards should be noted in the previous section.
After completing an item in the Elements section, place a check mark next to that item.
- Student Name:
- Instructor Name/CFI#/expiration:
- Instructor Endorsement:
- Date of Lesson: