PPL General Flashcards
Speed for maximum endurance?
Speed that consumes the less fuel
What is the compass lubber line?
Line showing aircraft heading on the compass
What is pre-ignition
Fuel/air mixture ignited too soon because of hot carbon particles
What will VSI indicate if static source is blocked?
Level flight
What is Newton’s third law
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction to the first body.
What is lift formula?
Lift = Cl x p/2 x V^2 x S
List radio readability scale (1 to 5)
- unreadable;
- readable now and then;
- readable with difficulty;
- readable; and
- perfectly readable.
What is slow flight?
Slow flight is the speed range between stalling speed and the speed for maximum
endurance.
Ground to air visual sign one need Fuel or Oil?
L
To which pressure source is the altimeter connected?
Static source
In the turn coordinator gyroscope, the supporting ring (gimbal) of the rotor is ___ to the longitudinal axis of the aircraft.
Tilted 35 degrees
What does the mixture controls?
The amount of fuel sucked by the nozzle
Wing tip vortices rotation from behind?
Clockwise on left, anticlockwise on right
Sign of carburetor icing on variable pitch propeller?
Decrease in manifold pressure
Ball + turn on same side= slipping or skidding?
Slipping
Formula to determine aircraft balance
Weight = moment / moment-arm
Static port blocked.
What will Altimeter do?
Stop moving
What instrument does pitot tube blockage affects?
Only Airspeed indicator
Complete pitot blockage. What will airspeed indicate during climb/descent?
Will act like an altimeter.
What will happen to altimeter if partial blockage of pitot tube?
slowly decrease to zero
Name of speed bottom of white arc
Vs0 (power off, full flaps, stall speed)
Name of speed on the Altimeter
IAS (Indicated Airspeed)
What is CAS
Calibrated Airspeed
IAS corrected for Positional Error
Rule of thumb to correct CAS for altitude and temperature?
add 2% to IAS for every 1000ft of pressure altitude increase
eg. 6000ft with 100kt → (6x2=) 12% to 100kt = 112kt.
How will Airspeed react if pitot is blocked during climb?
Airspeed will increase (over-read) during a climb
How will Airspeed react if pitot is blocked during descent?
Airspeed will under-read during descent
What happens if static system is blocked?
- Altimeter
- VSI
- Airspeed indicator during descent
- Airspeed indicator during climb
- Altimeter → frozen
- VSI → constant zero
- Airspeed indicator during descent → over-read (increase) STALL RISK
- Airspeed indicator during climb → under-read (decrease)
What happens to Airspeed indicator for partial leakage?
Slowly goes to zero
What is “clean configuration”
Flaps and gear retracted
Altimeter: What is the name of bottom of green arc?
Vs1: Power off stalling speed clean configuration
Airspeed: name of upper limit of green arc
Vno: Maximum structural cruising speed
Formula for bank angle stalling speed
Vst = Vs * sqrt(load_factor)
As the CG moves ___ (forward/rearward) the stall speed ___ (increases/decreases)
As the CG moves forward the stall speed ___ increases
An increase in weight ____ the stalling airspeed (increases/decreases). Why?
An increase in weight increases the stalling airspeed.
Because wing will fly at higher AoA for the same airspeed as compared to when it is lightly loaded. Will reach critical AoA sooner.
