RMIT飞行训练课件－Steep Turns Mass Brief 大坡度转弯

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Steep Turns Mass Brief
Aim
• To learn the principles and considerations
involved in conducting a steep (level) turn
that is coordinated and in balance.
Application
• A coordination exercise
• An evasive manoeuvre
Overview
• Revision
• Definitions
• Principles
– Steep turn
• Considerations
– Power
– Load factor
– Spiral dive
• Air Exercise
• Airmanship
Revision
• Forces in a Medium Level Turn
30°
Definitions
Steep Turn
• A turn where the angle of bank is equal to
or in excess of 45°
45°
Principles
• Forces in a Steep Turn
Weight
Load Factor  Lift
60°
Considerations
• Load Factor – “G Force” – “G Loading”
Weight
Load Factor  Lift
cosAngle of Bank
Load Factor  1
V V LF New StallSpeed S  
Considerations
Load Factor
• 60 degree angle of bank CosAoB
LF  1
Cos60 
LF  1
2
0.5
LF  1 
V V LF New StallSpeed S  
V 44 2 New Stall Speed  
V 44 1.41 New StallSpeed  
V 62.23 KIAS New Stall Speed 
Considerations
Power Setting
• Angle of Attack increased
• Induced drag increased
• Drag balanced by adding more thrust to
maintain speed
Considerations
Aircraft Limitations
• Maximum speed limitations
• Manoeuvre speed
• Maximum Loading
Vne 163 KIAS
Vno 129 KIAS
Va 99 KIAS
+3.8g
Considerations
• Overbanking tendency
L
R
• Coordinating the turn
BALANCED SLIPPING SKIDDING
Considerations
Spiral Dive
• Due to disorientation or loss of altitude
during high Angle of Bank manoeuvres.
Symptoms:
1. High and increasing IAS
2. Low and lowering nose attitude, high ROD
3. High and increasing Angle of Bank
4. High and increasing noise level
Air Exercise
• Pre-Entry
– Trim for Straight and Level
– Select a reference point
– Lookout
– Check minimum entry speed (>95kt)
• Entry
– B
– B
– B
ank passing 30° AoB increase power
alance
ack Pressure large increase in backpressure
Air Exercise
• During
– A
– L
– A
– P
ttitude
ookout
ttitude
erformance
• Exit
– B
– B
– B
ank passing 30° AoB reduce power
alance
ack Pressure release back pressure
Air Exercise
• Attitudes
Air Exercise
Spiral dive recovery
1. Reduce power to idle
2. Ease wings to level
3. Ease out of dive, to the climb attitude
4. At 90 KIAS, increase power BROC
5. Climb away
Do not attempt to ease out of a dive
UNTIL the wings are level
Airmanship
• Lookout
• Smooth but positive aircraft handling
• Correct handover/takeover procedure
• Operate within maximum aircraft
limitations
• Awareness of spiral dive symptoms and
prompt recovery if necessary
Review

EsiC

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猪也能飞

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xy8701

谢谢楼主，我正准备去RMIT读书