1-212th AVIATION REGIMENT

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1-212th AVIATION REGIMENT COMBAT MANEUVERING
FLIGHT AND POWER MANAGEMENT
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INTRODUCTION
To provide a basic guideline for the performance
of Combat Maneuvers and Power Management to
support successful high energy employment.
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Basic Maneuvering Flight Aerodynamics

• Just as rotor performance is affected by the
  aircraft being in or out of ground effect, there
  are several characteristics that aviators must be
  aware of to successfully perform combat
  maneuvers.
• Transient Torque
• Mushing
• Conservation of Angular Momentum
• High Bank Angle Turns

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Transient Torque
This is seen in the cockpit as a momentary
increase in torque when the cyclic is displaced
left of center. Conversely, as right cyclic is
applied, a reduction in pitch on the advancing
blade results in a reduction in induced drag that
tends to increase Nr and a corresponding
transient torque decrease.
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Mushing
Mushing results during High G maneuvers when at
high forward airspeeds aft cyclic is abruptly
applied. This results in a change in the airflow
pattern on the rotor, exacerbated by total lift
area reduction as a result of rotor disc coning.
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Conservation of Angular Momentum
A rotating body will rotate at the same velocity
until some external force is applied to change
the speed of rotation.
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High Bank Angle Turns
If adequate excess engine power is available,
increasing collective pitch will enable continued
flight while maintaining airspeed and altitude.
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UH60 Performance Characteristics
TRANSIENT ROTOR DROOP To minimize transient rotor
droop, avoid situations which result in rapid
rotor loading from low Ng SPEED and TRQ
conditions. Initiate maneuvers with collective
inputs leading or simultaneous to cyclic inputs.
During approach and landing, maintain at least
15 - 20 TRQ and transient droop will be minimal
as hover power is applied.
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High, Heavy, Hot
When high gross weights are added to the
equation, crews must be extremely thorough in
mission/performance planning and cover
contingencies during crew briefs. Less power
margin that results from heavy aircraft and high
DAs give crews considerably less flexibility in
handling contingencies.
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Retreating Blade Stall
During missions with a heavy aircraft in a high,
hot environment the onset of retreating blade
stall occurs sooner (a good hint is when you
notice a reduced VNE during PPC computation).
High gross weight High temperature High DA
Low Rotor RPM High G Maneuver High
speed flight
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REVIEW / DISCUSS

• Combat Maneuver Rules of Thumb
• High, Heavy, Hot Rules of Thumb

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Combat Maneuver Dos and Donts

• Every aviator that employs these techniques at
  the wrong place and time endangers our ability to
  continue this critical training.
• Only train maneuvers that have a combat
  application.
• Taking unnecessary risks when carrying a load of
  combat equipped infantry soldiers can be equated
  to a Commercial Airline pilot showing off when
  carrying athletes to the Olympics.
• There is no excuse. Do what the mission
  requires.

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Maneuvering Flight 3000 Series Tasks

• 3005 Demonstrate / Perform Flight
  Characteristics at Vh-IAS
• 3006 Perform Maximum Bank Angle
• 3007 Perform Maximum Pitch Angle
• 3008 Perform Decelerating Turn

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Perform Flight Characteristics at Vh IAS
1. Maintain dual engine maximum torque 0, -5
torque. 2. Establish Vh airspeed 5 KIAS.
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Demonstrate Transient Torque
TQ
TQ
60 Right
Maintain Altitude
60 Left
100 KIAS 1000MSL Note TQ
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Demonstrate/Perform Maximum Bank Angle
270 Turn
60 Left
100 KIAS 1000MSL
Direction of Flight
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Demonstrate/Perform Maximum Bank Angle
270 Turn
60 Right
100 KIAS 1000MSL
Direction of Flight
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Maximum Pitch Up Angle
70 KIAS 30 0/-5
400 AGL 100Kts
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Maximum Pitch Down Angle
2000 MSL 100Kts
Start to level before 1000 MSL
130 KIAS 30 0/-5
Level Powered Flt No lower than 400 AGL