What is the purpose of cabin pressurization difference? pg29
a) Gain weight
b) Comfort
c) To avoid explosive depressurization
d) More oxygen
One of the main problems of cabin pressurization is: pg29
a) Corrosion
b) Fatigue
c) Wear
d) Impure oxygen
Stagnation temperature related to mach in the leading edge: pg29
a) Tt= T(1+0,2M2)
b) Tt=T(1-0,2M2)
c) Tt=T(1+0,2M3)
d) Tt=T(1-0,2M3)
Subsonic flights needs more _______ and supersonic flights need more ______ PG29
a) Warm air/warm air
b) Cold air/ cold air
c) Cold air/warm air
d) Warm air/cold air
Ways a cockpit is heated
a) Sun
b) Avionics
c) Cinematically
d) All the above
The CAU is made up of: pg29
a) Cooling turbine
b) Water extractor
c) Heat exchanger
d) All of above
There is a water extractor in the CAU to pg29
a) Get rid of fog
b) Get rid of smoke/fumes
c) Eliminate corrosion
d) A and C
Classification of ignition systems: pg32
a) Batery-ignition and magneto-ignition.
b) Batery-ignition, magneto-ignition and electronic FADEC.
c) Magneto-ignition and electronic FADEC.
d) All are false
Mark the true:
a) The magneto is a type of engine-driven CC generator.
b) Aviationonlyusesmagneto-ignition.
c) The magneto is a type of engine-driven AC generator.
d) All are correct.
Types of starting systems: pg32
a) Inertia starters and direct cranking electric starter.
b) Inertia starter and magneto starter.
c) Inertia starters, direct cranking electric starter and battery starter.
d) Direct cranking electric starter and battery starter.
Mark the false: pg33
a) Inertia starters were usually used in old aircrafts.
b) Direct cranking electric starter is based on an electric motor.
c) Nowadays battery-ignition systems are used in aviation.
d) FADEC system is an electronic ignition system with only one moving part.
Functions of lubrication system: pg33
a) Reduce friction created between the moving parts of the engine.
b) Protection for corrosion.
c) Heating the engine.
d) a) and b).
Viscosity: pg33
a) Isn’t temperature dependent.
b) Doesn’t affect for the lubrication system.
c) Balance between thin and thick.
d) In the Pour Point begins to solidify.
Viscosity:
a) The Pour Point is the lowest to temperature for flowing.
b) SAE system is a classification according to the oil viscosity.
c) There are some oils prepared to work in a larger intervals of temperature called multigrade oils.
d) All of them.
1. Alternate engines: pg34
A) needs a propeller to generate motion
B) are internal combustion technology
C) produce thrust by themselves
D) a and b are correct
2. main advantage of the radial distribution of an alternative aviation engine: pg34
A) produces more power
B) produces more thrust
C) is more easily cooled by the air flow
D) weighs less
3. Which is not a phase of a four-stroke engine pg34
A) power
B) exaust
C) intake
D) dispersion
4. in the compression phase of a four-stroke engine: pg34
A) explosion forces piston down
B) air-fuel mixture is drawn in
C) piston pushed out burned gases
D) air-fuel mixture is compressed
5. the valves of an alternative motor pg34
A) open and close exactly in bdc and tdc
B) they open exactly in the bdc but do not close exactly in the tdc
C) they open exactly in the tdc but do not close exactly in the bdc
D) open and close but not exactly at the points bdc and tdc
6. the moment of ignition pg34
A) ensures the minimum pressure on the tdc
B) varies with engine speed
C) a and b are true
D) a and b are false
7. the fins on the cylinders of an alternate engine were introduced for pg34
A) make the engine more aesthetic
B) cooling the engine by reducing the weight
C) complementary to liquid cooling
D) all of the above are correct
8. why engaging an odd number of pistons in radial engines pg34
A) to ensure that there is always a piston performing a job
B) get more power
C) the weight is decreased
D) decreases the number of possible engine failures
1. ¿What is the most common engine in aviation? pg35
a) Two-stroke gasoil.
b) Two-stroke gasoline.
c) Four-stroke gasoil.
d) Four-stroke gasoline.
2. Crankcase: pg35
a) Light and strong.
b) Heavy and big temperature resistance.
c) Magnesium alloy.
d)Alloy of ( Cr, Ni, Mo).
3. Pistons.
a) Strong and heat tranferers.
b) Strong but not heat transferers.
c) Smaller than cylinders
d) A and C are correct.
4. Pistons rings .pg35
a) Same size than pistons.
b) They fit into the piston groves but spring out to press against the cylinder wall
c) Made of aluminium alloy.
d) Used just in radial engines.
5. Cylinders. pg35
a) Surplus oil retention above the ring.
b) Link to transmit forces between the piston and the crankshaft.
c) Provide the combustion chamber where the burning and expansion of gases take place.
d) Single-piece or multipiece.
6. Crankshaft. pg35
a) It supports the engine in the airframe.
b) It provides mounting face for certain accessorie.
c) Transform the reciprocating motion of the piston and connection rod into rotary for rotation of the propeller.
d) Nitrided steel alloys to support pressure and hot gases.
7. Wrigth’s flyer engine was made in: pg35
a) 1907
b) 1903
c) 1904
d) 1901
8. About IN LINE cylinders arrangements why was better in "V"?
a) Easier manufacture.
b) Lower vibration and more compact unit.
c) Lower maintenance.
d) They produce more power.
