FAA Helicopter Flying Handbook Practice Test

These questions are part of the practice quiz. Start practicing

• Airflow from rotor rotation that is modified by induced flow is called which of the following?
• Which weight term describes the weight including the standard helicopter, equipment, unusable fuel, and full operating fluids?
• What term describes a complete system of rotating airfoils creating lift for a helicopter?
• Which term describes the engine arrangement where the compressor and power section share a single driveshaft?
• Hovering a distance greater than one disk diameter above the surface describes which hover state?
• Which term denotes altitude adjustments caused by non-standard temperature variations affecting air density?
• Which property decreases with altitude and increasing temperature, affecting lift characteristics?
• Which force developed by rotor blades acts parallel to the relative wind and opposes drag and weight?
• A warning device that alerts abnormal wear in a transmission or engine by a magnetic plug is called?
• What device is used to limit blade flap at low rpm or when the rotor is stopped?
• Which stall occurs at or near the rotor tip due to high angles of attack required to compensate for dissymmetry of lift?
• What describes any visual or electronic device that provides point-to-point guidance information or positional data to aircraft in flight?
• What aerodynamic effect occurs near the ground that reduces induced drag due to lower upwash and blade tip vortices?
• Isogonic lines are used in navigation to indicate which variable?
• Induced Drag is most directly related to which aerodynamic phenomenon?
• What term defines the sum of the basic empty weight and the useful load?
• Which device limits rotor blade flap at low rotor speed or when the rotor is stopped?
• Hovering close to the surface under the influence of ground effect is known as what?
• Center of Gravity is the theoretical point where the entire weight of the helicopter is considered to be concentrated.
• What instrument displays altitude in feet or meters by sensing atmospheric pressure?
• Which term describes a vertical vibration in rotor systems?
• Which device restrains fore and aft motion of a rotor blade at the drag hinge?
• What is the term for a flapping hinge with a skewed axis that introduces a feathering component and a restoring force in the flapwise direction?
• Which term is defined as any surface designed to obtain a useful reaction of lift, or negative lift, as it moves through the air?
• Which term is defined as the total helicopter weight divided by the rotor disk area?
• What term refers to the distance from the hub to the tip along the blade?
• What is the ratio of the total rotor blade area to the total rotor disk area called?
• What term describes tilting the rotor disc to produce horizontal movement by adjusting cyclic pitch?
• Which device is used to provide navigational guidance information to aircraft in flight?
• The ability to maneuver a helicopter by tilting the rotor disk and changing the rotor blade pitch is referred to as what?
• Which instrument most directly indicates the rate of yaw?
• Which term describes the additional lift gained when moving into forward flight due to rotor efficiency?
• What term describes an engine that does not compensate for decreases in atmospheric pressure through turbocharging or other means?
• What is the vertical movement of a rotor blade about a flapping hinge called?
• Which altitude type is indicated when the altimeter is adjusted to 29.92 inHg and read off the instrument?
• Which rotor feature causes an upward bending of blades due to lift and centrifugal force?
• Which term refers to the tachometer needles that are not aligned?
• What is the hypothetical atmosphere based on averages with surface temperature 59 °F and surface pressure 29.92 inches of mercury at sea level?
• The angle between the airfoil's chord line and the relative wind is called what?
• What is the rotation of the blade around the spanwise (pitch change) axis called?
• Which term describes the rotor condition when rotor force has been removed or when the rotor is operating under low or negative G?
• The turn coordinator in a helicopter is used to indicate:
• What are the plates attached to the bottom of skid landing gear that protect the skid called?
• What is the phenomenon where the rotor disk tilts aft during transition due to unequal airflow?
• Which component is a flapping hinge that enables feathering and restoring forces in the rotor system?
• Which main helicopter force acts perpendicular to the relative wind?
• In a rotor system, the term for the vertical air flow through the rotor disk produced by lift is what?
• Which phenomenon describes rotor disk tilt during transition caused by uneven airflow?
• Which term defines the blade pitch angle with respect to the rotor plane, not the angle of attack?
• What rotor system eliminates the need for a tail rotor by using two contra-rotating rotors on the same axis?
• An imaginary straight line between the leading and trailing edges of an airfoil is called?
• Which term describes the position of the two needles on the engine/rotor tachometer when they are not superimposed?
• What term represents the combined weight of passengers, baggage, and cargo?
• Which term describes the variation in blade incidence from root to tip?
• What term describes self-excited vibration that occurs when the blade lead-lag frequency equals the fuselage's natural frequency?
• Which term denotes the engine type that transmits power through a shaft in turbine helicopters?
• The power control on the end of the collective control is called what?
• Which rotor system permits blades to feather but not flap or hunt?
• Which term refers to the basic empty weight not including full engine oil, with only undrainable oil?
• For semirigid rotors, a term used to describe the flapping or teetering axis of the rotor is called?
• Which term describes an airfoil having the same shape on the top and the bottom?
• What is the control used to change the pitch of all main rotor blades equally and simultaneously, thereby changing lift?
• Which term refers to the force reduction in rotor-induced drag when operating close to the ground?
• What altitude is described as the height above the standard pressure level of 29.92 inHg, read from the altimeter set to 29.92?
• Density altitude is defined as pressure altitude corrected for non-standard temperature variations. Which term matches this definition?
• Which component provides the anti-torque force to counter main rotor torque?
• Which directive is issued by the FAA to notify concerned parties of an unsafe condition?
• What is the term for the rotor head striking the mast on underslung rotors?
• What is the term for the effect where a rotor blade's velocity changes in its plane of rotation as the center of mass moves relative to the rotation axis?
• Which condition describes increased drag and decreased lift in the aft portion of the rotor disk due to higher induced velocity?
• What is the component of relative wind produced by rotation of the rotor blades?
• What unit of speed is defined as one nautical mile per hour?
• Which part of the blade attaches to the blade grip?
• Which term refers to the action that changes blade pitch around the feathering axis?
• The force that attracts a body toward its axis of rotation is called?
• An isogonic line along which there is no magnetic variation is called what?
• Describe a turboshaft engine with no physical connection between the compressor and the power output shaft.
• Which phenomenon is a self-excited vibration related to rotor dynamics and fuselage frequency?
• Which term is used for the height read when the altimeter is set to the standard pressure of 29.92 inHg?
• The load imposed on rotor blades is defined as the helicopter's total weight divided by the combined area of all rotor blades. Which term describes this?
• What is the name of the angle between the chord line of the rotor blade and the reference plane of the main rotor hub or rotor plane of rotation?
• Which statement about yaw control is true?
• Which component is responsible for supporting the main rotor assembly?
• What is the area swept by the rotor blades, a circle centered at the hub with a radius of one blade length?
• What is the fore (lead) and aft (lag) movement of the rotor blade in the plane of rotation called?
• Which component connects rotor blades to the hub, sometimes referred to as blade forks?
• What term denotes the rotation of a rotor blade around the spanwise axis, i.e., the pitch change axis?
• Which control changes the pitch of each rotor blade individually as it passes through one rotation to tilt the rotor disc and control horizontal movement?
• Which term describes the area swept by the rotor blades?
• Which control primarily changes yaw in a conventional helicopter?
• Calibrated Airspeed (CAS) is the indicated airspeed corrected for installation and instrument errors.
• Which rotor turns in a plane perpendicular to the main rotor and is parallel to the fuselage's longitudinal axis, and is used to control torque and yaw?
• Which term refers to the unequal lift across the rotor disc caused by differing air speeds on the advancing and retreating halves?
• What is the pedal used to control the pitch of the tail rotor or air diffuser in a NOTAR system called?
• The mechanical procedure used to bring the blades of the rotor into a satisfactory relationship with each other under dynamic conditions so that all blades rotate on a common plane is called?
• In helicopters with a single main rotor, what is the tendency to turn opposite the main rotor rotation called?
• The difference between the gross weight and the basic empty weight, It includes the flight crew, usable fuel, drainiable oil if applicable, and payload is called what?
• Which of the following is one of the four main forces acting on a helicopter and acts downward toward the Earth's center?
• Yaw describes the rate of change of which flight parameter?
• The drag component arising from the form or shape of helicopter parts is called which of the following?
• What phenomenon describes the helicopter’s tendency to roll uncontrollably when the critical angle is exceeded and a wheel is on the ground?
• To maintain a constant heading, a pilot must manage yaw primarily with:
• Which term is the difference between gross weight and basic empty weight including crew and payload?
• One of four main forces acting on a helicopter. Equivalent to the actual weight of the helicopter. It acts downward toward the center of the earth.
• What condition on the tachometer involves two pointers overlapping?
• Which term describes the mechanical change of rotor blade pitch at different azimuths to alter lift and drag during rotation?
• What term describes the additional lift obtained when entering forward flight due to rotor efficiency?
• Which engine configuration is described as having no mechanical link between the compressor and the power output shaft?
• What is the transient condition of downward flight where the rotor operates at angles of attack above maximum, with blade stall starting near the hub and progressing outward?
• Which rotor type has blades fixed to the hub but free to flap and feather?
• The point where the resultant of all aerodynamic forces acting on an airfoil intersects the chord line is known as?
• Which maneuver is performed before landing to slow the helicopter?
• Which phenomenon occurs in the aft portion of the rotor disk due to increased induced velocity, causing more drag?
• What is the rearward edge of an airfoil called?
• Which term refers to the lateral or longitudinal oscillation of the fuselage due to being suspended from the rotor system?
• Which hinge allows a rotor blade to flap to balance lift between advancing and retreating blades?
• During forward flight, the rotor blade advancing in a counterclockwise-rotating rotor as seen from above is located in which half of the rotor disk?
• Drag caused by frictional or parasitic resistance of the blades passing through the air, increasing with airspeed and changing little with angle of attack, is best described as which of the following?
• Which force is the inward force required to keep an object moving in a circle?
• What rotor dimension is measured from root to tip?
• The farthest part of the blade from the hub is known as what?
• What is the imaginary plane outlined by the rotor blade tips as they rotate?
• Which term describes the transmittal of rotor blade aerodynamics to the cockpit controls?
• What term describes the maximum lift-to-drag ratio, corresponding to the best glide speed?
• Which field studies how pilot performance is influenced by cockpit design, human physiology, emotions, and interactions with other aviation participants?
• The part of the hub assembly to which the rotor blades are attached is commonly known as what?
• Which surface is designed to obtain lift, or negative lift, as it moves through the air?
• What term describes an upward sweep of rotor blades as a result of lift and centrifugal force?
• Deviation from the best glide speed will lead to what effect on drag and glide distance?
• In a fully articulated rotor system, each blade can freely change pitch and move in which directions?
• Which term denotes the axis about which rotor blade pitch is varied, often called the spanwise axis?
• What is the force produced by the rotor, comprising rotor lift and rotor drag?
• The term for rotation about the vertical axis is:
• What is the imaginary line about which the rotor rotates, perpendicular to the tip-path plane?
• Which component supports the main rotor?
• A rotor hub that rotates below the top of the mast, as on semi-rigid rotor systems is called what?
• The state of a rotor when rotor force has been removed, or when the rotor is operating under a low or negative G condition is called what?
• Which term defines the ratio of blade area to rotor disk area in rotorcraft terminology?
• Which term describes the condition of the rotor blade when operating at an angle of attack greater than the maximum angle of lift?
• What term describes the blade located in the semicircular part of the rotor disk where the blade direction is opposite to the direction of flight?
• Which term describes the alignment of blade tips so they pass through the same plane of rotation?
• The actual height of an object above mean sea level is called what?
• Which component provides automatic flight control and stability augmentation?
• Which rotor system feature describes a blade that can move up and down and fore and aft in its plane of rotation while connected to the hub?
• Which phenomenon describes stall near the tip due to dissymmetry of lift?
• What is the tendency of a single-rotor helicopter to move laterally during hovering flight, also known as tail rotor drift?
• In forward flight, yaw is most significantly affected by:
• Which component is responsible for disconnecting the rotor from the engine when the engine stops?
• What FAA directive is issued to notify concerned parties of an unsafe condition and describe the corrective action?
• What is the length of a blade from tip to root called?
• Which component of drag is associated with lift production?
• What fundamental property keeps an object at rest or in uniform motion unless acted upon by an external force?
• Hovering out of ground effect requires more power due to increased which drag component?
• The relationship of the blade tips in the plane of rotation; blades that are in track move through the same plane of rotation is called?
• Which rotor component turns in a plane perpendicular to the main rotor and provides yaw control and anti-torque?
• Which flight condition describes a rate of turn that is too great for the angle of bank?
• What is the mechanical change of the angle of incidence, or pitch, of individual rotor blades independently of the others called?
• Which engine configuration has the compressor and power section mounted on a common driveshaft?
• The fore and aft movement of the blade in the plane of rotation is referred to as which term?
• Which component allows rotor blades to flap as a unit in a semi-rigid rotor system?
• What rotor system has blades connected to the hub so they can freely change pitch and move up and down and fore and aft in their plane of rotation?
• Which model of atmosphere uses a sea-level pressure of 29.92 inches of mercury and a lapse rate of about 3.5 °F per 1,000 feet?
• What is the dimension of a rotor blade or airfoil from root to tip?
• What gyroscopic effect causes an applied force to be manifested 90 degrees in the direction of rotation from the point of application?
• Which term describes the flow of air produced by rotor rotation that is affected by induced flow?
• Which term refers to compass correction for disturbances from electrical and metal components in the aircraft?
• In hover, a tail rotor failure will typically cause:
• The density of air described as mass per unit volume is called what?
• The ratio of a specified load weight to the total weight of the aircraft is called what?
• The movement about the lateral axis caused by cyclic input forward or aft causes the nose to pitch up or down.
• Which weight term excludes engine oil and other drainable fluids and represents the helicopter's basic weight?
• Which term refers to the imaginary plane traced by the rotor blade tips during rotation?
• What term describes a vibration in which the movement is in the lateral direction due to main rotor imbalance?
• Which rotor system has blades fixed to the hub but free to flap and feather?
• The angle between the airfoil's chord line and the relative wind is also called what?
• What term denotes the action that changes the pitch angle of the rotor blades by rotating them around the feathering axis?
• The angular difference between true north and magnetic north; indicated on charts by isogonic lines is called what?
• The apparent force that acts outward on a body moving in a circle is called?
• A helicopter with a malfunctioning tail rotor will most likely exhibit:
• The movement of the helicopter about its vertical axis is called?
• What turbine engine is used to drive an output shaft, commonly used in helicopters?
• A turbine engine transmitting power through a shaft as would be found in a turbine helicopter
• The movement about the longitudinal axis caused by cyclic input right or left causes the helicopter to tilt in that direction.
• Which device uses a magnetic plug to attract metal particles within the transmission and often indicates wear with a warning light?
• A vibration in which the movement is up and down, or vertical, as in an out-of-track condition is called what?
• Which term describes the process of aligning rotor blades so they rotate on a common plane?
• Which component automatically disconnects the main rotor from the engine when the engine slows below rotor RPM?
• Which value is obtained by correcting indicated airspeed for instrument and installation errors?
• Which term is described as the inherent tendency of a system to resist changes in motion?
• What term refers to the vertical component of air flow through the rotor system resulting from lift?
• Which hinge permits the rotor blades of a semi-rigid rotor system to flap as a unit?
• Which flight condition occurs when the main rotor is driven only by aerodynamic forces with no engine power?
• Which term is used for the adjustment process that brings the rotor blades into a satisfactory relationship so they rotate on a common plane?
• What flight condition occurs when the rate of turn is too slow for the angle of bank?
• Which instrument indicates flight altitude by sensing pressure changes and displaying altitude in feet or meters?
• Which blade location is defined as the blade located in a semicircular part of the rotor disk where the blade direction is opposite to the direction of flight?
• A yaw rate is best described as:
• Which rotor configuration uses two main rotors?
• What term describes the movement of a rotor blade relative to other blades in the plane of rotation, including leading and lagging?
• A low frequency vibration having one beat per revolution of the rotor can be described as which of the following?
• Which term describes the angular difference between true north and magnetic north on navigation charts?
• Increasing anti-torque pedal input will primarily increase which of the following?
• What is the aerodynamic force on a body acting parallel and opposite to relative wind?
• What term describes the distance an object is above the ground?
• Which term explains the lift imbalance across the rotor disk due to different air velocities on the advancing and retreating halves?
• A compass error caused by mechanical disturbances from electrical and metal components, with corrections shown on a compass correction card, is called what?
• Which term describes an upward sweep of rotor blades caused by lift and centrifugal force?
• The time between the end of evening civil twilight and the beginning of morning civil twilight is known as what?
• What device is used to stop the rotor blades during shutdown?
• What term describes the area swept by the blades of the rotor, forming a circle with its center at the hub and a radius equal to one blade length?
• In certain rotor configurations, what term describes the axis about which flap motion occurs?
• Which condition involves a rotor-driven descent with high angle of attack causing power settling?
• The transmittal of forces, which are initiated by aerodynamic action on the rotor blades, to the cockpit controls is known as what?
• Which force acts perpendicular to the relative wind?
• What term refers to the system that furnishes automatic means of controlling the aircraft?
• The axis around which the pitch angle of a rotor blade is varied, sometimes referred to as the spanwise axis, is called what?
• What type of flight is described as straight and level, unaccelerated flight with all forces in balance?
• Yaw is a rotation about which axis?
• A transient condition of downward flight described as descending through air after just previously being accelerated downward by the rotor, during which an appreciable portion of the main rotor system is being forced to operate at angles of attack above maximum. Blade stall starts near the hub and progresses outward as the rate of descent increases is called what?
• What term describes when two hands on an engine/rotor tachometer are superimposed over each other?
• Which term describes the tendency of the helicopter to drift laterally during hover?
• Lines on charts that connect points of equal magnetic variation are called what?
• What is the term for the ability of the rotor blade to move in a vertical direction, with blades flapping independently or in unison?