Questions and Answers of Fundamentals Of Aerodynamics

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Around what three axis do the primary flight controls move an aeroplane?
Movement of the __________________ in flight causes the aircraft to roll.
The _______________ is the primary flight control that moves the aircraft around the horizontal or lateral axis.
An __________________ tab is used to maintain the speed of an aircraft since it assists in maintaining the selected pitch.
A servo tab is similar to a balance tab in location and effect, but it is designed to operate the primary flight control surface, not just reduce the force needed to do so.
__________________ and __________________ are lowered to increase the camber of the wings and provide greater lift and control at slow speeds.
__________________ are small airfoil sections usually attached to the upper surface of a wing.
As temperature increases, the speed of sound __________________.
Wing sweepback is designed to delay or alleviate shock induced separation of airflow and improves aerodynamic performance.
A divergent engine intake duct __________________ airflow to the engine compressor inlet.
If the failure of a structure causes a loss of control of the aircraft or leads to a catastrophic structural collapse, the structure is classified as __________________ structure.
Wing and empennage structures often contain load carrying members called __________________.
What are the 5 major stress to which all aircraft are subject?
Most turbine engine mounts are constructed of __________________.
To maintain an airframe wherein all components are at the same potential level electrically, __________________ is used.
A common widespread electrolytic treatment for aluminum that coats the metal with a hard oxide film is __________________.
Longerons and stringers are used in __________________ fuselage construction.
Airframe structural alignment checks performed after abnormal flight loads or upon had landing measure __________________ and __________________ angles to insure they are as described by the
The majority of modern aircraft are constructed using __________________ construction.
Flight deck windows on transport aircraft are constructed of __________________ of tempered glass and plastic.
Name 4 major components that are attached to a fuselage.
Most often, wings are of full __________________ design, which means they are built so that no external bracing is needed.
Seat __________________ is the fore and aft space between each row of seats.
The __________________ are the principle structural members of a wing.
Airliner cabin entry doors are usually _____________ type doors.
A wing rib that is located entirely forward of the front spar that is used to shape and strengthen the wing leading edge is called a __________________ rib or false rib.
__________________ have a variety of uses on the aircraft, such as floor panels, bulkheads, and control surfaces, as well as wing skin panels.
Two common methods of balancing a flight control are mass balancing and __________________ balancing.
The joints in the wings are sealed with a special fuel resistant sealant enabling fuel to be stored directly inside the structure. This is known as __________________ design.
A __________________ is incorporated into the nacelle to isolate the engine compartment from the rest of the aircraft.
A streamlined enclosure called a nacelle is attached to the engine __________________ to house the engine and its components.
The volume of air for engine power production is __________________ by bleeding air off of the compressor for air-conditioning and pressurization.
The thermostatic __________________ has an adjustable orifice through which the correct amount of refrigerant is metered to obtain optimal cooling.
The heart of the air cycle air conditioning system is the refrigeration turbine unit, also known as the __________________.
The outside air absorbs heat from the refrigerant flowing through the __________________.
Vapor cycle air conditioning is a ______________ system used solely for the transfer of heat from inside the cabin to outside of the cabin.
Servicing a vapor cycle air conditioning system is done with either a full service recovery, recycling, evacuation and recharging unit or a __________________ set.
The low side of a vapor cycle air conditioning system has low __________________ and low __________________.
Water is removed from a vapor cycle air conditioning system by __________________.
The temperature __________________ compares the actual temperature signals received from the various sensors with the desired temperature input.
Controlling cabin pressurization is accomplished through regulating the amount of air that flows out of the cabin through the __________________ valve.
The unit of force nearly universally used today to represent atmospheric pressure in meteorology is the __________________.
Three pressurization parameters monitored on the flight deck include: cabin altitude, cabin rate of climb, and __________________ pressure.
__________________ is caused by repeated pressurization and depressurization of the fuselage pressure vessel.
The instruments used in controlling the aircraft's flight attitude are known as the __________________.
An analog vertical speed indicator (VSI) may also be referred to as a __________________ or __________________.
Name three types of solid state pressure sensors on modern aircraft.
A primary flight instrument that is a differential pressure gauge comparing ram air pressure and static air pressure is called __________________.
The turbine engine pressure indication that compares the total exhaust pressure to the pressure of the ram air at the inlet of the engine is called the __________________ indicator.
The speed of sound changes with __________________ and __________________.
The three most common pitot‑static instruments are the __________________, the __________________ and the __________________.
A __________________ is an electric system used for transmitting information from one point to another on non-digital aircraft.
The term density altitude describes altitude corrected for nonstandard __________________.
The tachometer, or tach, is an instrument that indicates the speed(s) of the __________________ of a turbine engine.
A rotating gear wheel that alters the magnetic field flux density as it moves past pole pieces is found in a __________________.
An elaborate and very accurate method of direction indication that combines the use of a gyro, a magnetic compass, and a remote indicating system is called a __________________ or a
The two main types of angle of attack (AOA) sensors used on jet transport aircraft are the __________________ and the __________________.
In a __________________ gyro, a vibrating or oscillating piezoelectric device replaces the spinning, weighted ring of the mechanical gyro.
For most metals, electrical __________________changes as the temperature of the metal changes.
In a turn, the ball of a turn-and-slip indicator responds to gravity and __________________ force.
If one of the junctions is heated to a higher temperature than the other, an electromotive force is produced in the circuit. This describes the basic operation of a__________________.
Name four basic elements (components) of an autopilot system.
Compensating screws are turned, which move small permanent magnets in the compass case to correct for magnetic __________________.
Near continuous rudder input is needed to counteract the tendency of an aircraft to oscillate around their vertical axis while flying a fixed heading. A __________________ is used to correct this
An error of __________________ should not be exceeded when testing a VOR system with a VOR test facility.
The traffic collision and avoidance system that is required internationally in aircraft with more than 30 seats or weighing more than 15 000 kg is __________________.
An ADF (automatic direction finder) uses a __________________ antenna.
The newest navigational aid that makes use of ground broadcasted information and on board GPS is called __________________.
A Radio Magnetic Indicator combines indications from a magnetic compass, VOR, and ADF into one instrument.
Three common types of weather aids used on the aircraft flight deck are __________________.
The radio navigation radio transmission that provides horizontal guidance to the centerline of the runway in an ILS (instrument landing system is called the __________________.
__________________ ground stations receive GPS signals and forward position errors to two master ground stations.
An airborne __________________ provides positive identification and location of an aircraft on the radar screens of ATC.
To receive __________________ radio waves, generally a V-shaped, horizontally polarized, bi-pole antenna is used.
What type of circuit breakers should never be used on aircraft?
How is the voltage output of an AC alternator controlled?
What two factors combine to cause a thermal runaway condition on a nickel-cadmium battery?
What is the basic electrical principle by which both DC alternators and transformers operate?
If both main generators and the APU generator fail, what is the next backup device to provide electrical power?
What must be done before two or more generators are connected to the same power bus?
Describe the power output of a typical turbine engine driven generator.
A transformer has 20 wire turns on its primary side and 4 wire turns on its secondary side. If 100 volts at 20 amps is fed into the primary side, what will be emitted from the secondary side?
On what factor does the frequency output of an AC alternator depend?
_____________ convert AC power to DC, and _____________ convert DC power to AC.
Specifications for emergency equipment requirements on any given aircraft are found in _______________________.
The black boxes that contain avionics computers are located _______________________________.
Passenger seats on an airliner are installed by attachment into _______________________.
Cabin furnishings materials are tested for ______________________.
If a seat belt is not functional and cannot be changed before flight, the seat must _________________________.
Cabin entertainment equipment may use a _______________________ to provides services in each seat row.
A _____________________ for each seating class is required.
Aircraft galleys connect into _____________ and ________________ systems.
A complete fire protection system on modern aircraft, and on many older aircraft, includes a fire __________________ system and a fire __________________ system.
The test circuit for a continuous loop fire detection element is located in the __________________.
Name 8 means of fire detection used on large turbine-engine and high performance aircraft.
Most modern engine installations use a __________________ to mount fire detection sensing elements for better maintainability, as well as increased reliability.
A __________________ depends on the rate of temperature rise and does not give a warning when an engine slowly overheats or a short circuit develops.
A pneumatic fire detector system has two sensing functions. Name them.
A __________________ permits more complete coverage of a fire hazard area than any of the spot type temperature detectors.

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