直升机飞行教员手册 Helicopter Flight Instructor Manual

时间：2012-06-08 09:45来源：蓝天飞行翻译 作者：航空 点击：次

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changing rotor RPM at constant manifold pressure.
? Straight and level flight
Explain that ‘straight and level flight’ means flight at a constant altitude and heading.
Describe the power and airspeed settings used for straight and level cruising flight, as appropriate to type.
Describe how to maintain airspeed at a constant altitude and heading by using visual and instrument cues, such as the relationship between the disc and the horizon, airspeed indicator, altimeter, etc.
Explain that during flight at a specific airspeed altitude corrections are controlled with the collective, and during flight at a specific power setting corrections are made with the cyclic.
Describe how to reduce airspeed in straight and level flight:
Select a slightly higher nose attitude (cyclic aft).
Reduce power to prevent climbing (collective/ throttle).
Prevent yaw (pedals).
Pause to allow airspeed to stabilise. Adjust power and airspeed as required.
Describe how to increase airspeed in straight and level flight:
Select a slightly lower nose attitude (cyclic forward). Adjust power to prevent sink (collective/throttle). Prevent yaw (pedals).
Pause to allow airspeed to stabilise.
Adjust power and airspeed and maintain balance with pedals as required.
AIR EXERCISE
Review previous air exercise.
Demonstrate airspeed changes.
Student practice
Demonstrate power changes.
Student practice
Demonstrate straight and level flight at cruise power.
Student practice
Demonstrate changes of airspeed in straight and level flight.
Student practice
Briefly let the student attempt to hover at the conclusion of each exercise until completion of Exercise 11.
TIPS FOR INSTRUCTORS
Students will often tend to pay excessive attention to the flight instruments in this exercise. Care must be taken to ensure that a proper scan between the instruments and external references is established and that a good lookout is maintained.

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