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245 Cards in this Set

  • Front
  • Back
(POH) 3 Land Immediately
1) Land On The Nearest Clear Area 2) Where A Safe Normal Landing Can Be Performed 3) Be Prepared To Auto
(POH) 2 Land As Soon As Practical
1 - Land @ The Nearest Airport Or Facility 2 - Where Emergency Maintainence Can Be Performed
(POH) 2 Power Failure General May Be Caused By
1 - Engine Failure or 2 - Drive System Failure
(POH) 4 Engine Failure Symptoms
1 - Left Nose Yaw 2 - Change In Noise Level 3 - Oil Pressure Light 4 - Decreasing Engine RPM
(POH) 4 Drive System Failure Symptoms
1 - Unusual Noise 2 - Unusual Vibration 3 - Right/Left Nose Yaw 4 - Low Rotor RPM while High Engine RPM (Wined Up) at same time
It is acceptable to allow your airspeed to go below 30 knots if
Your rate of sink is below 300 FPM (feet per minute)
To avoid hitting unmarked wires your altitude must be
Above 500 feet AGL
The number one cause of fatal accidents in the R-22 is
Collision with wires and other objects
autorotation definition
a descending maneuver where the engine is disengaged from the main rotor system and the rotor blades are driven solely by the upward flow of air through the rotor
freewheeling unit disengages anytime the
engine r.p.m. is less than the rotor r.p.m
3 desired settings before an autorotation
1 - 700ft head into the wind 2 - 70 KIAS 3 - below 110 RPMS
6 starting an autorotation steps
1 - lower collective 2 - aft cyclic 3 - right pedal 4 - roll throttle off 5 - raise collective a little 6 - maintain 60 to 65 KIAS
4 ending an autorotation steps
1 - enter flare at 40 ft with 60 KIAS and 104-105% RPM 2 - roll on throttle 3 - push cyclic at 8 to 15 ft AGL 4 - raise collective
autorotation (airspeed good/RPM good)
cyclic/maintain and collective/maintain
autorotation (airspeed fast/RPM good)
cyclic/pull back and collective/raise
autorotation (airspeed slow/RPM good)
cyclic/push forward and collective/lower
autorotation (airspeed good/RPM low)
cyclic/same and collective/raise
autorotation (airspeed good/RPM high)
cyclic/same and collective/raise
autorotation (airspeed fast/RPM low)
cyclic/back and collective/same
autorotation (airspeed slow/RPM low)
roll on the throttle!!!
Rate of descent is high at __ airspeed and decreases to a minimum at approximately __ __ __ knots
zero/50 to 60
When making turns during an autorotation generally use __ control only
cyclic
the use of __ __ to assist or speed the turn causes loss of airspeed and downward pitching of the nose
anti-torque pedals
If rotor r.p.m. builds too high during an autorotation __ __ __ sufficiently to decrease r.p.m. back to the normal operating range
raise the collective
If the r.p.m. begins decreasing you have to again
lower the collective
Aft cyclic movements cause
an increase in rotor r.p.m.
rotor r.p.m. increases during a turn due to the
increased back cyclic control pressure-which induces a greater airflow through the rotor system
The tighter the turn and the heavier the gross weight
the higher the r.p.m.
Low Rotor RPM
- Anytime The Rotor RPM Is Below
8 Power Failure @ 500 ft AGL Procedures
1 - Immediate Down Collective 2 - Maintain Rotor RPM 3 - enter auto 4 - Establish A Steady Glide/About 65 KIAS 5 - Adjust Collective/Keep Rotor RPM In Green Arch 6 - Choose A Landing Area/Maneuver Into Wind If Alt Permits 7 - Restart or No Restart 8 - Raise Collective Just Before Impact/To Cushion Landing (Touchdown In Level Attitude)
5 Restart Procedure after power failure ABOVE 500 FEET AGL
1 - Mixture Full Rich 2 - Primer Down/Locked 3 - Throttle Closed 4 - Then Slightly Cracked 5 - Actuate Starter w/ Left Hand
2 No Restart procedure after power failure ABOVE 500 FEET AGL
1 - Turn Off All Unnecessary Switches 2 - Shut Off Fuel
2 Landing @ 40' AGL after Power Failure @ 500 ft AGL
1 - Start Cyclic Flare 2 - To Reduce ROD (rate of descent) & forward Airspeed
2 Landing @ 8' AGL after Power Failure @ 500 ft AGL
1 - apply foward Cyclic To Level Ship 2 - raise collective
if power failure occurs at night @ 500 ft AGL-do not turn on __ __ above 1000 ft AGL to preserve battery power
landing lights
7 Power Failure Between 8' & 500' AGL
1 - Takeoff Should Be Conducted-Per Height/Velocity Diagram 2 - Immediate Down Collective-Maintain Rotor RPM 3 - Adjust Collective-Keep Rotor RPM In Green Arch 4 - Maintain Airspeed Until Ground Approaches 5. As Ground Approaches-Start Cyclic Flare To Reduce ROD (Rate of Descent) & forward Airspeed 6. @ 8' AGL-foward Cyclic To Level Ship 7. Raise Collective Just Before Impact
3 Power Failure Below 8' AGL
1. Immediate Right Pedal-To Prevent Yaw 2. Allow Aircraft To Settle 3. Raise Collective Just Before Impact
3 Max Glide Configuration
1 - 90% Rotor RPM 2 - 75 KIAS 3 - one nautical mile per 1500 feet AGL
4 Ditching Power Off POWER FAILURE OVER WATER
1 Follow Same Procedures As Over Land Power Failure-Until Water Contact 2 Apply Lateral Cyclic-To Stop Blades 3 Release Seat Belts 4 Clear Aircraft
11 Ditching Power On POWER FAILURE OVER WATER
1 Descend To Hover Above Water 2 Unlatch Doors 3 Allow Passengers To Exit 4 Fly To Safe Distance For Passengers 5 Switch Off-Master Battery & Alternator 6 Roll Off Throttle 7 Keep Level / Allow Aircraft To Settle 8 Pull Full Collective On Water Contact 9 Apply Lateral Cyclic-To Stop Blades 10 Release Seat Belts 11 Clear Aircraft
Vortex Ring State is A Condition In Downward Flight In Which The Helicopter
Decends In Its Own Vorticies
(6) Leading Causes of the Vortex Ring State
1 - Steep Approach 2 - Low FWD Airspeed with Less Than ETL ( 30 KIAS) 3 - High Density Altitude / High Gross Weight 4 - Low Airspeed With A Tailwind 5 - Hover Out Of OGE Ceiling 6 - Flopping (Ballooning) Auto
(3) Recognition of the Vortex Ring State
1 - Sudden Rapid Descent 2 - Pitching & Yawing 3 - Mushy Controls
(3) Recovery from the Vortex Ring State
1 - Down Collective / FWD Cyclic 2 - Once Airspeed Is Established 3 - Pull Pitch & Climb Out
Recovery from the Vortex Ring State-Down Collective
Reduces Vortices (Less Drag)
Recovery from the Vortex Ring State- forward Cyclic
Moves Helicopter In Front Of Vortices
Vortex Ring State-3300 Rule
Don't Loose 30 KIAS Until rate of descent Is 300 FPM
Ground Resonance Occurs In what kind of Helicopter
Fully Articulated Rotor System
(7) Ground Resonance Occurs
1 - When Blades Become Out Of Phase with Each Other 2 - Thru the Lead & Lag Hinge 3 - Used To Fix Coreolis Effect 4 - Due To Shock Contact with the Ground 5 - Rough Landing 6 - Usually In Wheeled Helicopters 7 - Ultimately Shaking the Helicopter Apart
(2) Ground Resonance Requires
1 - Fully Articulated Rotor System 2 - Ground Contact
(2) Ground Resonance is caused by
1 - Rough / Hard Landing 2 - Bad Dampeners (Make It Worse)
(2) Ground Resonance is recovered
1 - If Rotor RPM Is Still In the Green Arch 2 - Pick Helicopter Up and Blades Should Rephase Themselves 3 - If Rotor RPM Is Out Of the Green Arch 4 - Get It on the Ground and Shut It down Immediately
Blowback is a by product Of
Low Rotor RPM Blade Stall
3 When does blowback occur
1 - Nose Low Attitude 2 - Results In FWD CG 3 - Air Stiking The Rear Stabilizer From Underneath
how do students try to correct blowback
With Full Aft Cyclic
6 what causes blowback
1 - High Density Altitude and High Gross Weight 2 - Engine Already at Max Power 3 - More Angle of Attack = More Drag 4 - Kung Foo Grip On Throttle 5 - Holding Power Back 6 - Lazy Governor
4 how do you recognition blowback
1 - Left Nose Yaw 2 - Engine Quiet 3 - Low Horn & Light 4 - Tachs
how do you recover from blowback
Simultaneous Down Collective & lower Throttle
3 how do you prevent a blowback
1 - Make Sure Low rotorhorn Warning System Is Operational 2 - Make Sure Governor Is On & Working 3 - No Kung Foo Grip
Dynamic Rollover is the tendency of the helicopter to
Continue Rolling Past Its Critical Angle of 15 Degrees
Dynamic rollover begins when the helicopter starts to
pivot around its skid or wheel because of a failure to remove a tie down or skid securing device
(4) Dynamic Rollover requires
1 - Pivot Point 2 - Some Lift in Use 3 - Enough Pitch to Create Lift 4 - Rolling Moment
To recover from a Dynamic Rollover
Immediatly Down Collective
(5) Contributing Factors a Dynamic Rollover
1 - Poor Preflight Check of the Skids 2 - Obstacle Clearance 3 - Hover High Enough 4 - Rushed Pickup 5 - Failure to Consider Wind & CG
Cyclic Travel Only Has __ Degrees of Travel - Therefore Opposite Cyclic Will Not Correct the Problem
9
(Low G) The low G condition can best be recognized by
A feeling of weightlessness
(Low G) When performing a zero G push-over an airplane
Has the same lateral control as during one G flight
(Low G) When performing a zero G push-over a helicopter
Has less lateral control than during one G flight
(Low G) To recover from a low G condition the pilot must apply
Aft cyclic
(Low G) 2 uncommanded pitch-roll-or yaw resulting from flight in trubulence
1 - gradually apply controls to maintain rotor RPM-positive Gs-eliminate sideslip 2 - minimize cyclic control inputs/do not over control
(Low G) 3 inadvertent encounter with mod/severe/extreme turbulence
1 - depart area if isolated 2 - land as soon as practical
Low G Pushover occurs Anytime The Helicopter Is
Placed In A Weightless State
Weightless State is referred to
Less Than 1x The Force Of Gravity
Low G pushover causes the
rotor system to unload and a loss of pendular action
3 Low G pushover in relation to tail rotor
1 - Tail Rotor is Still Loaded 2 - Causes Roll In The Direction Of TR Thrust 3 - Right Roll
5 Leading Causes of Low G pushover
1 - Any Condition That Unloads The Rotor System 2 - Abrupt FWD Cyclic 3 - Leveling Off Too Quickly After A Climb 4 - Turbulance (Wind Shear) 5 - Collision Avoidence
4 Mast Bumping is caused by
1 - Low G maneuvers (below 0.5 g's) 2 - Rapid-large cyclic movements (especially forward) 3 - Flight near longitudinal / lateral CG limits 4 - High slope landings
Mast Bumping In The Right Roll is caused by
Loss Of Pendular Action and Tail Rotor Thrust
Mast Bumping only occurs in ___ rotor systems
underslung
(6) Mast Bumping occurs when
1 - Pilot Uses Hard LT Cyclic To Recover From RT Roll 2 - Since NO Pendular Action 3 - Helicopter Remains In The RT Roll 4 - While The Disc Is Tilted Full LT 5 - The Rotor Blades Then Contact The Rotor Mast On Every Revolution 6 - Ultimately Severing Rotor System
(7) Mast Bumping Prevention
1 - No Abrupt FWD Cyclic 2 - Slow Down For Turbulence 3 - Reduces FWD Momentum 4 - Less Nose Low Attitude 5 - Lower Tail = Less TR Thrust Vector For RT Roll 6 - Gradual Level Off After Climb 7 - Turn For Collision Avoidance
(2) Mast Bumping recovery
1 - Gentle Aft Cyclic To reload The Rotor System 2 - Roll Out Of The Turn
When the rotor RPM begins to decay the engine will
Produce less power at nearly the same torque
During normal flight a 10% loss of RPM will result in
10% less engine power available
You can recover the most energy by
Reducing your airspeed from 90 knots to 80 knots
To recover from a low RPM situation power on at any airspeed the pilot must
Roll on throttle and lower the collective simultaneously
2 Right roll in low G condition
1 - gradually apply aft cyclic to restore positive G forces and MR thrust 2 - do not apply lateral cyclic until positive G forces are established
Aerodynamic stall occurs when
An Airplane loses airspeed or a helicopter loses rotor RPM
If the pilot pulls in too much pitch
It may pull the RPM down causing a loss of power leading to rotor stall
Low Rotor RPM (Blade Speed)
The Slower The Blade Spins The Larger The Angle Of Attack Needed To Create The Same Amount Of Lift
Low Rotor RPM (Drag)
Pulling Pitch To Make More Power Creates More Drag
Rotor Blade Stall Occurs at
80% Plus 1% Per 1000 Ft
During a Blade Stall all lift Is Lost-there is __ __ because there is so much drag and there Is NO aerodynamic Way To Recover
no recovery
During a blade stall-the __ blade will stall first
retreating
3 low RPM rotor stall occur can occur
1 - Hover 2 - Autorotation 3 - Cruise
(4) Retreating Blade Stall is Caused By
1 - Excess Flapping compensating For Dissymetry Of Lift 2 - Leads To Exceeding The Critical AA On Retreating Side Of The Rotor System 3 - Blades Stall Starts @ The Tip 4 - because retreating blade tip Is The Lowest Down flapped Portion it works Its Way Inward
(3) Retreating blade stall is recognized by
1 - Deep Low Vibrations 2 - Nose Pitch Up (Gyro) 3 - left roll (retreating blade is stalling)
(5) Leading Causes of retreating blade stall are
1 - High FWD Airspeed 2 - Abrupt left Cyclic Turns 3 - Turbulence (Wind Shear) 4 - Tail To Head Wind 5 - Low Rotor RPM
(2) Blade stall recovery
1- Down Collective / Aft Cyclic 2 - Whatever Input Was Made (Take It Out)
In relation to the wind retreating blade moves __ and advancing blades moves _ the wind
out & into
In relation to speed retreating blade moves __ and advancing blades moves _
slower & faster
In relation to position retreating blade flaps __ and advancing blades flaps _
down & up
In relation to angle of attack the retreating blade has __ angle of attack and advancing blades has __ angle of attack
greater & smaller
In a blade stall the nose pitches up because
Gyroscopic Procession causes the Stall Displacement to Be Felt at 90 Degrees After The Stall Starts
In a blade stall a left roll occurs because
retreating Blade Continues To Flap Down
2 Loss Of Tail Rotor Thrust In Forward Flight symptoms
1 - Indicated By A Right Nose Yaw 2 - Can Not Be Corrected By Left Pedal
5 Loss Of Tail Rotor Thrust In Forward Flight
1 - Immediately Enter Autorotation 2 - Maintain @ Least 70 KIAS 3 - Select Landing Site 4 - Roll Off Throttle into over travel spring 5 Perform Autorotation Landing
2 Loss Of Tail Rotor Thrust During Hover Symptoms
1 - Indicated By A Right Nose Yaw 2 - Can Not Be Corrected By Left Pedal
3 Loss Of Tail Rotor Thrust During Hover
1 - Roll Off Throttle into over travel spring 2 - Allow Aircraft To Settle 3 - Raise Collective Just Before Impact
4 types of Loss Of Tail Rotor Effectiveness
1 - MAIN ROTOR DISC INTERFERENCE (285-315°) 2 - WEATHERCOCK STABILITY (120-240°) 3 - TAIL ROTOR VORTEX RING STATE (210-330°) 4 - LTE AT ALTITUDE
(2) (Loss Of Tail Rotor Effectiveness) Main Rotor Disc Interference caused by
1 - Caused By A Left Quartering Headwind 2 - Main Rotor Vorticies Are Blown Back Into The Tail Rotor
(3) (Loss Of Tail Rotor Effectiveness) Weather Cock Instability
1 - Caused By A Tailwind 2 - Tail Wants To Yaw With The Wind 3 - The Wind will Try To Force The Nose Into The Wind
(2) ) (Loss Of Tail Rotor Effectiveness) Tail Rotor Vortex Ring State
1 - Caused By A Left Crosswind 2 - Vorticies Of The Tail Rotor Get Blown Back Into The Tail Rotor
(Loss Of Tail Rotor Effectiveness) At Altitude
The Air Is Not Thick Enough For The Tail Rotor To Maintain Sufficiant Thrust
(Loss Of Tail Rotor Effectiveness) Recognition
Uncommanded Yaw
2 (Loss Of Tail Rotor Effectiveness) Conditions
1 - High FWD Airspeed 2 - High Power
(3)(Loss Of Tail Rotor Effectiveness) Contributing Factors
1 - Low Rotor RPM 2 - Tail Wind 3 - Not Paying Attention To Wind Direction
2 (Loss Of Tail Rotor Effectiveness) Recovery
1 - Immediate Opposite Pedal 2 - FWD Cyclic To Get Out Of Vorticies
(Loss Of Tail Rotor Effectiveness) Prevention
Fly Into The Wind
MR (Main Rotor) Temp
indicates excessive temp of MR gearbox - land immediately if noise vibration or temp rise
MR (Main Rotor) Chip
indicates metallic particles in MR gearbox - land immediately if noise vibration or temp rise
5 Engine Fire During Start at Ground (Engine Starts)
1 - Continue Cranking/10 to 15 seconds 2 - Run @ 50% To 60% For A Short Time 3 - Shut Down 4 - Extinguish 5 - Inspect
5 Engine Fire During Start at Ground (Engine Doesn't Start)
1 - Continue Cranking/10 to 15 seconds 2 - Shut Off Fuel 3 - Shut Off Master Battery 4 - Extinguish 5 - Inspect
7 Engine Fire In Flight (Smells like something burnt)
1 - Immediately Enter Auto 2 - Master Battery Off 3 - Cabin Heat Off 3 - Cabin Vent Open 4 - Engine On/Normal Landing or Engine Off/Autorotational Landing 5 - Shut Off Fuel 6 - Extinguish 7 - Inspect
4 Electrical Fire In Flight
1 - Master Batter Off 2 - Alternator Off 3 - Land Immediately 4 - Extinguish/Inspect
During and Electrical Fire In Flight what two systems will be inoperative with master battery and alternator switches off
Governor and Low RPM Warning System
Tach Failure (1 Of 2 Tachs Fail)
Use Remaining Tach
2 Both Tachs Fail
1 - Use Governor 2- Land As Soon As Practical
(Tach Failure) Each tach-the governor-and the low RPM warning horn are on
separate circuits
(Tach Failure) Either the battery or the alternator can __ supply power to the tachs
independently
(Tach Failure) A special circuit allows the battery to supply power to the tachs even if the __ __ __ is off
master battery switch
3 Governor Failure
1 - Grip Throttle Firmly 2 - Switch Gov Off 3 - Complete Flight w/ Manual Throttle Control
To quickly descend for collision avoidance the pilot should
Reduce collective pitch while keeping the aircraft level with the cyclic
When crossing high tension wires the pilot should
Always fly directly over the towers
If you encounter unexpected severe turbulence you should
Slow down and avoid over controlling the aircraft
(EMERGENCY LIGHTS) TR (Tail Rotor) Chip
indicates metallic particles in TR gearbox - land immediately if noise vibration or temp rise
(EMERGENCY LIGHTS) Low fuel light warning light
indicates approx one gallon of usable fuel remaining - will run out after five minutes at cruise power
(EMERGENCY LIGHTS) Clutch Light Less Than 7 Seconds
Ignore - never take off with clutch light on
(EMERGENCY LIGHTS) 4 Clutch light on more Then 7 Seconds
1 - Pull Clutch Circuit Breaker 2 - Land Immediately 3 - Be Prepared To Auto 4 - inspect for malfunction
(EMERGENCY LIGHTS) Alternator (ALT)
indicates low voltage and possible alternator failure
(EMERGENCY LIGHTS) Alternator (ALT) steps
1 - turn off nonessential electrical equip 2 - switch ALT off and back on after on second to reset over voltage relay 3 - land as soon as possible
(EMERGENCY LIGHTS) Flight without functioning alternator results
in loss of electronic tachometer
(EMERGENCY LIGHTS) Brake warning light
rotor brake engage-disengage
(EMERGENCY LIGHTS) Starter On warning light
1 - immediately pull mixture to idle cut-off 2 - turn master switch off 3 - have starter motor serviced
(EMERGENCY LIGHTS) 4 carbon monoxide light (if installed)
1 - open nose and door vents 2 - shut off heater 3 - if hovering-land or transition to forward flight 4 - CO symptoms persist-land immediately
(EMERGENCY LIGHTS) LOW RPM horn warning light
1 - restore RPM by rolling throttle on 2 - lower collective 3 - in forward flight/apply aft cyclic
(EMERGENCY LIGHTS) 4 Oil Pressure Light
1 - check engine tach for power loss 2 - Check oil pressure Gauge 3 - If Pressure
3 the engine drives the main rotor through
a transmission and belt drive or centrifugal clutch system
The antitorque rotor is driven from the
transmission
The engine drives the __ __ which then transfers power directly to the
main transmission/main rotor system as well as the tail rotor
above __ feet throttle correlation and governor are less effective - power changes should be
4000/slow and smooth
at __ power settings above 4000 feet the throttle is frequently __ open and __ must be controlled with collective
high/wide/RPM
when operating at high density altitudes governor response rate may be __ __ to prevent overspeed during gusts pullups or when lowering collective
too slow
never exceed airspeed Vne
up to 3000 ft density altitude-102 KIAS
never exceed airspeed Vne
up to 3000 ft density altitude-102 KIAS
max rotor speed
tach 104%-RPM 530
max engine speed
2652 RPM 104%
max cylinder head temperature
500 degrees F (206 degrees C)
max oil temperature
245 degrees F (118 degrees C)
oil pressure min during idle
25 psi red beginning
oil pressure min during flight
55 psi middle yellow
oil pressure max during flight
95 psi red
oil pressure max during start and warmup
115 psi red
max gross weight
1370 lb (622 kg)
min gross weight
920 lb (417 kg)
max per seat plus baggage compartment
240 lb (109 kg)
max in baggage
50 lb (23 kg)
min solo weight __ lbs with __ fuel or __ lbs with aux fuel
130 standard 135
datum line is __ inches forward of main rotor shaft centerline
100
prohibited ___flight
aerobatic
prohibited __ cyclic __
low-g pushovers
prohibited ___ selected off with exceptions of __
governor-(system malfuntion or emergency procedures training)
prohibited __ conidtions
icing
prohibited-max operating density altitude
14000 ft
prohibited-operational gages required for flight
alternator-rpm governor-low rotor rpm alarm-oat
lights required for VFR operation at night 4
1 landing 2 navigation 3 instrument 4 anticollision
airspeed indicator green arc
50 to 102 KIAS
airspeed indicator red line
102 KIAS
rotor tach upper red line
110%
rotor tach yellow arc
104 to 110%
rotor tach green arc
101 to 104%
rotor tach yellow arc
90 to 101%
rotor tach lower red line
90%
rotor tach yellow arc
60 to 70%
engine tach upper red arc
104 to 110%
engine tach green arc
101 to 104%
engine tach lower red arc
90 to 101%
engine tach yellow arc
60 to 70%
oil pressure lower red line
25 psi
oil pressure lower yellow arc
25 to 55 psi
oil pressure green arc
55 to 95 psi
oil pressure upper yellow arc
95 to 115 psi
oil pressure upper red line
115 psi
oil temperature green arc
75 to 245 degrees f (24 to 118 degrees C)
oil temperature red line
245 degrees F (118 degress C)
Cylinder head temperature green arc
200 to 500 F (93 to 260 C)
Cylinder head temperature red arc
500 F (260 C)
manifold pressure yellow arc
19.6 to 24.1 in Hg
manifold pressure red line
24.1 in Hg
carburetor air temperature yellow arch
-15 to 5 C
below 18 in manifold pressure
ignore gage and apply full carb heat
prohibited solo flight when surface winds exceed __ knots
25 gusts
prohibited solo flight when surface wind gust spreads exceed __ knots
15 knots
prohibited flight turbulences 3
1 moderate 2 severe 3 extreme
upon encountering turbulence adjust forward airspeed to between __ knots and __ Vne but no lower than __ knots
60 07 57
moderate causes changes in 3
1 altitude or attitude 2 variations in indicated airspeed 3 strain against the seat belts
Main Rotor - Articulation
free to teeter and cone-rigid inplane
main rotor-tip speed
approx 100% RPM - 672 FPS
tail rotor - articulation
free to teeter - rigid inplane
tail rotor-tip speed
approx 100% RPM - 599 FPS
drive system - engine to upper sheave
two double vee-belts with 85361 speed reducing ratio
drive system - upper sheave to drive line
sprag type overrunning clutch
drive system - drive line to main rotor spiral-bevel gears with
1147 speed reducing ratio
drive system - drive line to tail rotor spiral-bevel gears with
32 speed increasing ratio
powerplant model
0-360-J2A
Rotor Max Speed Tach __ and Actual RPM __
104% / 530
Rotor Mim Speed Tach __ and Actual RPM __
101% / 515
Power Off Rotor Max Speed Tach __ and Actual RPM __
110% / 561
Power Off Rotor Mim Speed Tach __ and Actual RPM __
90% / 495
normal rating _ BHP (derated)
145
normal rating approx __ RPM
2700
max continuous rating __ BHP approx
124
max continuous rating ___ RPM Tach percent __
2652 104%
5 minute takeoff rating __ BHP
131
5 minute takeoff rating __ RPM
2652
main rotor system is able to
Flap and Feather
4 Cone Dimensions
1 - SemiRidgid 2 - Underslung 3 - Asymetrical (w/ Twist) 4 - 25'2 Diameter
Electrical System
-12 Volt Battery- 60 Amp/14 Volt Alternator
Height
107 in
Overall length
345 in
Cabin Height
69 in
Cabin Width
44 in
MR Blade twist
-8 degrees
MR Blade Chord
7.2 inches
TR Diameter
42 inches
TR Blade Chord
4 inches
TR Blade twist
0 degrees
Blade Stall occurs at
80% / 1% per thousand feet
BLADE STALL
The condition of the rotor blade when it is operating at an angle of attack greater than the maximum angle of lift
BLOWBACK
The tendency of the rotor disc to tilt aft in forward flight as a result of flapping
CORIOLIS EFFECT
The tendency of a rotor blade to increase or decrease its velocity in its plane of rotation when the center of mass moves closer or further from the axis of rotation
DISSYMMETRY OF LIFT
The unequal lift across the rotor disc resulting from the difference in the velocity of air over the advancing blade half and retreating blade half of the rotor disc area
TRANSLATING TENDENCY
Also called tail rotor drift
T R A N S V E R S E - F L O W EFFECT
A condition of increased drag and decreased lift in the aft portion of the rotor disc caused by the air having a greater induced velocity and angle in the aft portion of the disc
Translational lift
present with any horizontal flow of air across the rotor.