RMIT飞行训练课件－STEEP DESCENDING TURNS大坡度下降转弯

航空

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航空

STEEP DESCENDING TURNS
Aim
• To understand the principles involved in
descending an aircraft at 45 AoB,
maintaining balance and airspeed.
Application
• Height loss manoeuvre within a confined
space
• Control coordination exercise
Overview
• Revision
• Principles
• Considerations
– Under-banking
– Over-banking
– Load Factor & Stall Speed
• Air Exercise
• Airmanship
• Review
Revision
Forces in a Steep Turn
g
LF
2
cos60
1

 
W
AoB
LF
cos
 1
Revision
Forces in a descent
Principles
• The vertical component of lift is reduced in
both the descent and turn.
• The combination of both manoeuvres
produces a highly tilted lift vector.
• Therefore, at the glide speed a high rate of
turn and RoD will be achieved.
• Back pressure will be required to maintain
speed.
Considerations
A
B
• Overbanking
Considerations
• Under-banking
Outer Wing
Horizontal Distance Travelled
Loss of
Altitude
Inner Wing
L
L
Larger Angle
of Attack
Considerations
Load Factor and Stall Speed
• Load factor and stall speed increases
therefore fly faster (70kts) to maintain a
safe buffer over the stall.
AoB
LF
cos
 1
V V LF S NEW SOLD  
Air Exercise
Pre-Entry
• Trim for glide attitude
• Select a reference point
• Lookout
Entry
• Roll into steep descending turns, as you would into a steep turn (B
B B) except that, you lower the nose for 80kts and apply a little back
pressure.
• ≈ 1000 fpm
During
• ALAP
• If done correctly, descend 500ft every 360
Exit
• Same as steep turn resuming glide attitude
Airmanship
• Lookout
• Smooth but positive aircraft handling
• Correct Handover/Takeover procedure
Review

猪也能飞

感谢楼主万分感谢感谢万分

xy8701

谢谢楼主，我正准备去RMIT读书