10 Questions Test Flashcards
What causes Limit Load Factor to be Exceeded
Level altitude Turns increase load factor exponentially.
Vertical gusts can increase angle of attack to resulting in increased load factor
Speed determines the amount of excess load that can be imposed upon the wing.
What is the load factor range for Normal, Utility, and Aerobatic
Load Factor range for Normal category is (3.8) - (-1.52)
Load Factor range for Utility category is (4.4) - (-1.76)
Load Factor range for Aerobatic category is (6.0) - (-3.0)
Increased load factor and stall relation
Load factor increases weight which increases stalling speed. Load factor increases as bank increases, and wings stall because you increase your Weight which means your aircraft is producing less lift with the increased weight, increasing stall speed.
Maneuvering speed defined
Maximum speed which the limit load factor can be imposed without causing structural damage
Maneuvering speed and Weight relation
Maneuvering speed increases with increase in weight. The described maneuvering speed is set to Max Gross Weight. You must calculate Va for your weight of the aircraft before taking off, so if you reach limit load factor you stall before you break.
Loss of control inflight (LOC-I) definition
Defined as the deviation of the aircraft from the intended flight path
Spin Defined
Controlled or Uncontrolled maneuver in which the aircraft descends in a spinning path, caused by aggravated stalls.
Spins Cause
Exceeding critical angle of attack while applying excessive or insufficient rudder/aileron
When are spins most likely to occur
Engine failure during takeoff climb out
Crossed-control turn from base to final
Engine failure on approach to landing
Go around with full nose-up trim
Go-around with improper flap retraction
How do you recover from a spin
Throttle Idle, Ailerons Neutral, Rudder opposite of spin, then Stall recovery
Adverse Yaw cause
In a roll one aileron is deflected downward and the other is deflected upward, the aileron that is deflected downward produces more lift and more drag causing a yaw opposite to your turn
What is Gross weight
The maximum allowable weight of both the airplane and its contents.
What is useful load
Weight of the pilot, copilot, passengers, baggage, usable fuel and drainable oil
What flight characteristics will be affected when aircraft is overloaded
Higher Takeoff Speed
Longer Takeoff Roll
Reduced rate of climb
Lower maximum altitude
Shorter range
Reduced cruising speed
Reduced maneuverability
Higher Stalling Speed
Higher Landing Roll
Longer Landing roll
Excessive weight on nosewheel
What affects does a forward CG have
Increased Stall Speed (Higher AoA to remain level)
Decreased Cruise Speed (More drag at higher AoA)
Increased Lateral Stability (More leverage)
What affects does a aft CG have
Decreased stall speed (Lower AoA to remain level)
Increased Cruise speed (Lower AoA)
Less Stable (Less leverage)
Poor Stall/Spin recovery (due to less stability)
What are the weights to Gasoline, Oil, and Water
Gas 6lbs
Oil 7.5lbs
Water 8.35lbs
Is it okay having a change CG not logged
No, its a requirement for an A&P to annotate and log any change of the CG
What are the main elements of aircraft performance
Takeoff and Landing distance
Rate of climb
Ceiling
Payload
Range
Speed
Fuel Economy
Maneuverability
Stability
What factors effect an aircraft on takeoff and landing
Air Density
Surface Wind
Runway surface
Upslope or Downslope runway
Weight
How does weight affect takeoff and landing performance?
higher takeoff speed, Slow acceleration, Increased drag and friction, increased landing speed, increased ground roll, decreases climb rate, and longer takeoff roll
Effects of increased density altitude
increased landing roll, increased TAS on approach/landing, reduced rate of climb, increased takeoff distance,
What does air density have a direct relation too
lift produced, propeller efficiency, drag, and engine performance
What affects air density
altitude, temperature, and humidity
How many N.M. can a Cessna 172 glide per 1000’ loss of altitude
1.5 N.M. per 1000’ loss of altitude
what is the common type of Hydraulic Fluid
mineral-h-5606, red
Fuel Injection system described
Engine Driven Fuel pump provides fuel to air control unit and Auxiliary Fuel Pump provides fuel to fuel/air control unit or to starter
Fuel/Air control unit meters fuel based on mixture control sends fuel/air mixture to throttle control
Fuel Manifold Valve distributes fuel to discharge nozzles
Discharge Nozzles inject fuel/air mixture
Fuel Pressure indicator measures fuel pressure
What does the aircraft electrical system provide power too.
Lighting, Turn Coordinator, Fuel Temperature Gauge, Fuel Gauges, Tachometer, Anti-Icing equipment, Avionics, Flaps, Stall Warning System
Oil Functions
Seal, Clean, Lubricate, Cool
Detonation cause and effects
Caused by High engine temperatures, High Power Setting or using lower grade of fuel
Effects are Excessive Temperature, Roughness, Loss of Power, and Excessive Piston Pressure which can lead to piston cylinder or valves failing
Detonation Corrective Action
Ensure proper grade of fuel is used, Keep cowl flaps open while on ground, Enrich mixture, Avoid extended high power steep climbs, Monitor engine instruments
Preignition Cause and Effects
Cause: Cylinder Hot Spot, Small Carbon Deposit on spark plugs, cracked spark plug, or cylinder damage
Effects: Excessive Temperature, Roughness, Loss of Power, and Pressure which can lead to piston cylinder or valves failing
Corrective Action Preignition
Reduce Power, Reduce climb rate, enrich mixture, open cowl flaps
Ammeter Indications defined
Positive After starting and in Flight - Battery Power being replenished
Full Positive in Flight - Faulty Voltage regulator causing overcharge to battery
Full Positive After starting - If static for 1 minute, Starter still Engaged, engine should be shut down
Negative After starting - Normal unless it continues which would indicate alternator failure or overload
Negative in Flight - Alternator not functioning or overload
Corrective Action for Continuous discharge or charge in flight
Alternator shut off/removed from circuit
All electrical equipment not essential must be turned off
Flight should be terminated
What can happen if alternator overcharges the battery
If the Voltage regulator is broken the battery can be overcharged which will evaporate electrolytes at extreme amounts releasing explosive chemicals and if a short circuit were to happen the battery would explode
What does Continuous discharge in flight indicate
Alternator off, Alternator Failure, or Overload
What is indicated if Oil Pressure is low but Oil temperature is normal and what is the corrective action
Lack of oil, clogged oil pressure relief valve, oil pressure gauge malfunction. Land as soon as possible
Partial loss of power corrective actions
Correct to Best Glide Speed, and find a field to land
If Time Permits:
Contact ATC
Check Carburetor heat
Check Fuel amount
Check Fuel selector
Check mixture control
Check Primer is in default position and locked
Check Magnetos
Procedures for inflight fire
Mixture Idle
Fuel Selector Off
Master Off
Cabin Heat off
Air Vents On
Establish an airspeed of 100KTS or greater
Execute forced landing procedures
Procedures for Startup fire
If engine starts: Increase RPM, then shut down engine
If engine doesn’t start: Throttle Full, Mixture Idle, and continue to try to start engine
If fire continues: Ignition Off, Master Off, Fuel Selector Off
Evacuate aircraft and get assistance and fire extinguisher if needed
Purpose for continuing start up during engine fire
Sucking fuel through carburetor to vacuum the fire out
What are the limitations of ASI
limited to to only proper flow of air in pitot/static system
Errors of the airspeed indicator
Position Error caused by static sensing erroneous static pressure from spiraling slipstream
Density Error caused by changed in altitude and temperature
Compressibility Error caused by packing of air into the pitot tube at high airspeeds, resulting in higher than normal indications
Limitations of the Vertical Speed Indicator
not accurate until the aircraft is stabilized, 6-9 second lag is required to stabilize or equalize pressure
What are the fundamental properties of Gyroscopes
Rigidity in space and Gyroscopic Precession
What are the attitude indicator limitations
100 - 110 degrees of bank and 60 - 70 degrees of pitch if either are exceeded the instrument will tumble or spill until reset
Attitude Indicator Errors
Turn error: after 180 turn, it indicates a slight turn and bank on opposite direction. Following 360 turn, it cancels out.
Acceleration error: horizon bar moves down indicating a climb.
Deceleration error: horizon bar moves up indicating a descent.
These errors fix themselves after a couple minutes of straight and level flight
Limitations Heading Indicator
55 degrees of bank or pitch will cause tumble or spills until reset
Heading Indicator Errors
Due to gyroscopic precession friction causes heading indicator to drift
Hows does a Turn Coordinator work
When the aircraft yaws, or rolls, it produces a force in the horizontal plane that, due to precession, causes the gyro and its gimbal to rotate about the gimbal’s axis
What information does the turn coordinator provide
Slip, Skid, Rate of turn, Yaw, and Roll