Knowledge Levels 1, 2, and 3

[Blank] is the aerodynamic force caused by air flowing over an aerofoil.

[Blank] is a force opposing thrust, resulting from airflow disruption over an aerofoil.

[Blank] is a forward-acting force that propels an aircraft, stemming from the mass of air accelerated rearwards.

The total ______ of a blade results from combining lift, drag, thrust, and torque vectors in propeller dynamics.

The ______ ______ is the angle between the chord line, which is an imaginary line drawn through the blade, and the plane of rotation.

For a Sensenich propeller designated M74DMS5-2-60, the '74' component indicates the propeller ______ is 74 inches.

For a Sensenich propeller designated M74DMS5-2-60, the '-60' component designates the ______ of the propeller is 60 inches at the 75% station

The angle between the chord line and angle of relative wind/airflow is termed the angle of ______.

[Blank] ______ helps ensure every section of the blade produces equal thrust, from hub to tip, by adjusting blade angles.

[Blank] is the distance a propeller moves forward in one revolution.

[Blank] is the difference between geometric pitch and effective pitch in propeller dynamics.

The effect where the torque from an anti-clockwise propeller affects aircraft, tending to roll it clockwise, is known as ______ ______.

A rotating body resists changes to its plane of rotation, straight and level flight resists turns, known as a ______ effect.

[Blank] ______ correct a rotation effect over the aircraft fin with a rotational speed as the propeller.

[Blank]-rotating propellers cancel torque; have straight high-speed air over the fin, bettering control.

[Blank] force tends throw rotating blades away from the propeller hub.

[Blank] Twisting Moment (CTM) spins propeller blades fine on variable propellers.

A device known as ATM, or Aerodynamic Twisting ______ tries to move propeller blades to a coarser blade angle

[Blank] bending force is a force which bends forward and pulls aircraft.

The blade face experiences tension, so the propeller must resists ______ which increases proportionally with rpm

Increasing rotational velocity is maintained to a constant forward velocity, then the angle of ______ is increased

When a blade tip reaches sonic speed, losing performance through vibrations caused by wave and approaching sound speed, larger propellers can be caused by ______ waves

[Blank] vibrations involve engine pulses, creating standing waves in the blade and leading to metal fatigue and structural failure.

[Blank] are designed to restore the round of the blade shank to an aerofoil, which is usually either clamped/ bonded, and restore air flow.

[Blank] is the term for layering and gluing timber for propellers, placed in the kiln and carefully controlled.

[Blank] protects wood propellers in take-off/taxi, secured along leading-edge/tip metal, allowing drain that can be made from different materials.

[Blank] directs designed distributing/stress metals more evenly into the surface to improve fatigue strength.

Fiber Resin, Kevlar, Carbon and Boron construction material allows it to do what to form profile to resist distortion.

[Blank] shafts, are a thick Engine Circular bolt attached using standard bolts.

[Blank] shafts incorporates a spline, typically found on turbo prop.

[Blank] is a pitch described to be the blade angle constant and feather controlled multi- engines.

[Blank] is the reverse function is managed via throated/guarded throttles & low-stop/hydraulics are added in modern props.

NTS, known as a sensing the device in gear that senses torque / feather, if the action of the blades are ______ to original.

[Blank] system prevents propeller windmilling when feathered in flight, decreases run-down after parking.

[Blank] System is critical of proper RPM, used to help FADEC determine parameters

[Blank], the propeller must be able to absorb available / reciprocate turbine.

[Blank] are normally added to reduce drag and prevent the dome and barrel

Control in pitch can come electrically, for light aircraft which can be up to little 25 h.p known as a ______

In the overspeed position the flywheel move against, thus increase blade to reach ______ is the action of a govonor.

A double govonor system senses engine, which is ______, controlling oil and pressure.

Typically, the ______ have CTM/ pressure is dumped which aids a Feathering propeller in it's proper operation

[Blank] is a feature that stops overspeeding issues with blades, to trigger fuel amounts and speed

The shape of an aircraft wing that increases airflow velocity over its surface is called an ______.

[Blank] is a force opposing thrust, caused by the disruption or impact of airflow over, or onto, an aerofoil.

[Blank] is the reaction to the mass of air being accelerated rearwards, felt on the blade face, and forming the basis of momentum theory for propellers.

Plotting the vectors for lift/drag and thrust/torque will help derive the total ______.

The angle between the ______ line and the plane of rotation is known as the blade angle.

The angle between the chord line, and the angle of relative wind/airflow, is termed the angle of ______.

To ensure all sections of the propeller blade produce equal thrust, the blade is manufactured with a gradual ______ from hub to tip.

[Blank] is the distance moved forward by the propeller in one revolution; This can vary with different blade angles on variable pitch propellers.

[Blank] is defined as the difference between geometric pitch and effective pitch.

If a propeller is being driven anti-clockwise, the ______ that is being developed to drive the propeller has an effect on the aircraft structure.

A rotating propeller will impart a rotational motion to the ______ in the same direction as the propeller.

[Blank] force is a force that tends to throw the rotating propeller blades away from the propeller hub.

[Blank] Twisting Moment (CTM) is a force which tends to rotate propeller blades toward a fine blade angle on variable pitch propellers.

[Blank] Twisting Moment (ATM) is a force that tries to move the propeller blades to a coarser blade angle.

[Blank] bending force is a resultant force from the load that air resistance (drag) places on the blades.

[Blank] bending force is a force that bends the blades forward as the aircraft is pulled through the air.

Varying the propeller angle of attack outside its designed parameters will lower the ______ of that blade and therefore the propeller as a unit.

The final force that is exerted on a spinning propeller is blade ______.

To allow propellers to absorb the enormous power that engines can develop, larger ______ were made.

Propeller blade ______ are designed to restore the round section of the blade shank to an aerofoil shape and thereby increase airflow to the engine.

To protect wooden propeller blades, a metal shield is secured around the tip and along the leading edge; This metal shield is known as either leading-edge tipping or leading-edge ______.

[Blank] is used to add extra protection to alloy blades, this process provides a hard coating which is corrosion resistant.

[Blank] are usually made of special plastic resins, these resins are reinforced with fibers or filaments composed of glass, Kevlar, carbon or boron.

The ______ shank is the cylindrical part of the blade near the blade root and is usually thick for strength.

[Blank] propellers are conventionally mounted in front of the engine powerplant.

[Blank]-rotating propellers are two separate propellers mounted in line on two concentric shafts which rotate in opposite directions.

In a Beech Roby aircraft, rotating a handle rotates a pinion drive gear which meshes with a large driven gear that is around the engine ______.

When a loss of engine power occurs in an auto feather system, the ______ pressure switch closes and, after a set interval of time, the time-delay unit completes the circuit, energising the feather control.

Variable-pitch applications, a removable ______ is fitted into a forging (taper bore) at the center of the blade butt to allow for the blades to turn on when blade angle changes occur.

Altering the blade angle changes the load on the propeller, which allows the selected engine ______ to be maintained by the governor.

[Blank] permits the blades to be altered to a negative value during operation, so the propeller produces negative thrust acting as break.

The ______-position propeller, or bracket-type propeller, is the most basic design which is not dependent upon an engine-driven governor.

The function to limit the speed of the propeller is as follows, the FADEC software adjusts the propeller blade angle through the ______ to control the propeller speed.

A ______ acting governor is used to direct oil to or from the actuating piston of a single-action propeller hub since oil is acting only on one side of the piston.

To initiate feather to the basic hydromatic propeller, it is necessary only to depress the feather ______.

The purpose of adding a governor to a propeller is to maintain constant propeller ______.

The basic hydromatic propeller that separated into two chambers, the outboard chamber receives ______ oil pressure constantly and move blades to pitch.

When installing a constant-speed, reversing propeller used the same basic to flanged-shaft propellers; however, the addition of the ______ tube.

To unfeather the propeller, the pilot must depress the feather, and high-pressure oil is then ported to the outboard side of the piston and bringing the blades to the angle.

[Blank] is any system which prevents the formation of ice on the propeller by employing a fluid that mixes with moisture on the propeller.

The shape of an aircraft wing or propeller is designed to increase the ______ of the airflow over its cambered surface.

The angle between the chord line and the plane of rotation, usually measured in degrees, is termed the ______.

For best results, the angle of attack should be 2° to 4º , it is within this angle of attack that the incoming air is ______, then allowed to expand as it leaves the trailing edge of the blade, resulting in thrust.

[Blank] is the distance a propeller advances forward through a solid medium in one revolution.

[Blank] is the distance a propeller actually advances forward in one revolution due to moving through air

The second propeller straightens the ______ of the first, causes a straight high-speed flow of air over the fin and improves control.

[Blank] is a force which tends to rotate propeller blades toward a fine blade angle on variable pitch propellers

[Blank] is a force that tries to move the propeller blades to a coarser blade angle.

[Blank] bending force is a resultant force from there load the air resistance places on the blades

The blade ______ is the cylindrical part of the blade near the blade root. It is usually thick for strength and contributes little or nothing to thrust.

The earliest propellers fitted to aircraft were constructed of ______.

[Blank] is used to add extra protection to alloy blades and provides a hard coating which is corrosion resistant, waterproof, and airtight.

Two unidirectional Kevlar ______ are placed between the camber and the thrust face surfaces of the shell to resist flexing and buckling.

A ______ propeller is one whose blade angle cannot be changed.

[Blank] propellers are those conventionally mounted in front of the engine powerplant and 'pull' the aircraft through the air.

The purpose of adding a ______ to a propeller is to maintain constant propeller speed

A ______ coupling is designed to decouple the reduction gearbox from the power section should the NTS system fail to limit negative torque

[Blank] is the process of moving the propeller blades until they are approximately parallel to the direction of flight to stop the engine from windmilling after the engine is shut down in flight.

[Blank] is when the propeller blade angle is altered to a negative value during operation, so the propeller will produce negative thrust, acting as a brake and thereby reducing aircraft landing roll