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40 Cards in this Set
- Front
- Back
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The Static Source in the pitot static system goes to which instrument(s)?
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Airspeed Indicator & Altimeter
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In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normall indicate...?
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Correctly when on a north or south heading. (A.N.D.S)
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What is cyclic feathering?
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The periodic and automatic pitch changed or the rotor blades independently of each other.
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Where is the Sprague Clutch located on the R22?
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In the center of the upper sheave.
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What is the purpose of the Sprague Clutch?
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the sprague clutch enables the rotors to freewheel if the engine quits, thus allows auto-rotation.
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What is the purpose of the clutch?
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To disengage the heavy main rotor from the engine during startup to save the stater motor.
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What is the range of the GREEN ARC for the rotor tachometer on the R22?
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101%-104%
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During auto-rotation, whats to be done if your RPM's begin to drop?
(random, not in lesson 1) |
LOWER collective; If lowered all the way, apply small inputs of AFT cyclic.
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What is the purpose of the cyclic?
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To tilt the main rotor disc in the direction of desired horizontal flight.
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Deviation in a magnetic compass is caused by...?
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Magnetic fields within the aircraft distorting the line of magnetic North(force).
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What does the red line on the airspeed indicator represent?
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"Vne" (Velocity Never to Exceed)
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During flight, when are the indications of a magnetic compass accurate?
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During straight-and-level, unaccelerated flight.
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How many cylinders does the R22's engine have?
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4
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Magnetic Dip error does what as you travel north when north of the equator?
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Becomes worse.
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What is the range of the yellow arc for the manifold pressure gauge in the R22?
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19.6-24.1 in/hg
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Changing the altimeter setting by 0.1 inch will change the indicated altitude by?
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100ft
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What is the engines BHP rating at 2700 RPM?
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145 BHP
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What are the max capacity's and usable quanties of fuel in both tanks for the r22?
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Main Tank- 19.8 max capacity
19.2 usable Aux Tank- 10.9 max capacity 10.5 usable |
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What is the maximum continuous BHP rating for the engine on the R22?
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124 BHP
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What type of landing gear is on the R22?
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Spring and yeild
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What rotor rpm will the low rotor rpm light and horn come on?
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97%
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The pitot system provides impact pressure for which instrument?
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Airspeed Indicator
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Which instrument(s) become inoperative if the static vents are clogged?
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ALL
Airspeed Indicator, Vertical Speed Indicator, and Altimeter |
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What is the 5 min maximum BHP rating for the engine on the R22?
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131 BHP
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What type of airfoils are on the main rotor blades on the R22?
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Symmetrical
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What type of fuel is approved by SSH?
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100 Low Lead Aviation Fuel
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List all characteristics on the main rotor system on the R22.
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-2 all metal blades
-Honeycomb interior -Stainless steel leading edge -Symmetrical airfoil -Semi-rigid system -Able to feather(pitch change) -Blades flap as single unit -Under-slung on Teeter Hinge -Coning Hinges -25'2" Diameter, 7.2" chord length, 8 degree washout |
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List all characteristics on the Tail Rotor system on the R22.
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-2 all metal blades
-Honeycomb interior -Aluminum skin -Asymmetrical airfoil -Semi-rigid system -Able to feather(pitch change) -Offset delta hinge(flapping) -Blades flap as single unit -Fixed Coning Angle -3'6" diameter, 4" chord length -Tip Speed 599fps at 100%rpm -At 104%, tail rotor RPM is 3396 |
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2 ways to cool the engine are...
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Air cooled and Oil cooled
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What are the min and max oil quantities for take off?
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4-6 quarts
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What are the Engines total RPMs at 104%?
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At 104%, 2652 RPM
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What is the speed reducing ratio for both main rotor and tail rotor gear boxes?
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Main Rotor Gear Box- 11:47
Tail Rotor Gear Box- 3:2 |
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What is the voltage of the main battery?
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12 Volts @ 25 amp/hour
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What is the voltage of the Alternator?
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Alternator- 14 Volts @ 60amps
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What is DETONATION?
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Detonation is the uncontrolled spontaneous explosion of the mixture in the cylinder.
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What is Preignition?
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Preignition is the premature burning of air/fuel mixture.
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What type of engine is on the R22 Betta II?
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Lycoming O-360-J2A
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What does the Manifold Pressure gauge tell us?
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Displays the amount of power being produced by the engine to turn the main rotor blades.
FYI- Yellow Arc is 19.6-24.1 |
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How many magnetos does the R22 have and what is their purpose?
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2 Magnetos
Act as small AC generators powered by the engine to produce high voltage that gets sent through the distributor where it then gets directed to the spark plugs. |
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The primary purpose of the tail rotor is to...
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...counter act the torque effect of the main rotor.
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