Module 1

Question 1

it states that for every force acting on a body, there is an opposite and equal reaction.

Answer 1

Isaac Newton’s Third Law of Motion

Question 2

It is the force which is generated in the
opposite direction to that of a discharge of fluid under
pressure, escaping through an opening.

Answer 2

Jet propulsion

Question 3

Whatever the form that device utilizing the jet propulsion, it is essentially a __________________ in which it operates on _____________________.

Answer 3

reaction engine
Sir Isaac Newton’s Third Law of Motion

Question 4

It consisted of a sphere into which steam was introduced
under pressure.

Answer 4

HERO’S ENGINE

Question 5

What is the shape of a Hero’s engine?

Answer 5

Sphere

Question 6

What is introduced into the sphere of Hero’s Engine to create motion?

Answer 6

Pressure

Question 7

In hero’s engine, the ___________ escaping through nozzle mounted opposite one another on the surface of the sphere, created ____________,
which caused the sphere to rotate around its axis.

Answer 7

steam
thrust

Question 8

In hero’s engine, where do steam passes through?

Answer 8

nozzle

Question 9

It is one of the first attempts in developing jet powered
aircraft.

Answer 9

CAMPINI CAMPRONI CC-2

Question 10

CAMPINI CAMPRONI CC-2 is one of the first attempts in developing jet powered aircraft resulted in the development of a ___________.

Answer 10

hybrid design

Question 11

It is the force that pushes you deep into your seat as you speed down the runway for take-off. It is the force that propels an airplane forward through the air.

Answer 11

Thrust

Question 12

What law is applied in jet propulsion by taking in a quantity of air and accelerating it through an orifice or nozzle.

Answer 12

Newton’s Third Law of Motion

Question 13

In a applying Law of action and reaction in jet propulsion, The______________ is the action and _______________ is the reaction.

Answer 13

Acceleration of the air
Forward movement

Question 14

During operation, a jet engine pushes gases out of the ___________________. This makes an unbalanced force towards the front of the engine.

Answer 14

exhaust nozzle

Question 15

Jet engine thrust can be increased in two ways:

Answer 15

 Increase the speed of exhaust gases.
 Increase the quantity of exhaust gases.

Question 16

_____________will make an aircraft fly faster or with more weight.

Answer 16

Increased engine thrust

Question 17

In hero’s engine, the sphere object is called _______

Answer 17

aeolipile

Question 18

In CAMPINI CAMPRONI CC-2, Compressor output was mixed with ______, the combination was burnt and jet thrust resulted.

Answer 18

fuel

Question 19

Year earlier than CC-2, the Germans had flown their
version of a jet powered aircraft namely________

Answer 19

HEINKEL 178

Question 20

The HEINKEL 178 was powered by an engine designed by
young German scientist ________________.

Answer 20

Hans von Ohain

Question 21

____________________ submitted patents for his jet engine in1930 but it was not until 1939 that sufficient financial
and technical backing was found to enable him to
manufacture a flyable version of his engine.

Answer 21

Sir Frank Whittle

Question 22

The firm of _______- had initially been contracted to
produce the Whittle engine, but ____________ eventually
took over the development of the engine.

Answer 22

Rover
Rolls Royce

Question 23

Rolls Royce reworked the ____________ to produce the
_____________. Later versions of the engine, capable
of ____________ of thrust, were used to power the ______________

Answer 23

Whittle engine
‘Derwent’ engine
3,600 lb
Gloster Meteor F8.

Question 24

During a visit to the United States, the leader of the Rolls
Royce design team found that the Americans were
developing engines capable of producing up to__________lb of thrust. On his return to Britain, he initiated a project
which culminated in the ___________, which at the time
was the most powerful engine in the world, with _______
of thrust.

Answer 24

4000
Nene Engine
5,000 lb

Question 25

What are two propulsion devices?

Answer 25

1. Air Breathing 2. Rockets

Question 26

It Carries the entire propellant composed of liquid or solid fuel and the oxygen.

Answer 26

rockets

Question 27

this propulsion device Uses atmospheric air and some fuel as main propellant.

Answer 27

air breathing

Question 28

The examples of this propulsion device are piston engines, ramjet, scramjet, pulsejet, and gas turbine engines.

Answer 28

air breathing

Question 29

What are the 8 basic steps of operation of jet propulsion engines?

Answer 29

1.Air enters through the air intake. 2.Air is compressed by passage through the compressor. 3.Air is mixed with fuel in the combustion chamber. 4. Fuel is ignited; Pressure and Temperature raised. 5. Some of the pressure is used to turn the turbine. 6. Turbine shaft drives the compressor. 7. Hot and high-pressure air is forced through the nozzle. 8. The reaction force is the engine thrust.

Question 30

1. The main function of this system in any airplane is to provide a force to overcome the aircraft drag. 2. This force is called _________-.

Answer 30

1. Propulsion system 2. Thrust

Question 31

The _____________ is by far the most practical form of jet engine in use today. In fact, It has become the standard on nearly all transport category, business, and military aircraft.

Answer 31

gas turbine engine

Question 32

Types of Jet Engines

Answer 32

1. Ramjet 2. Pulse Jet 3. Scram Jet 4. Rocket Engine

Question 33

what is the meaning of the acronym athodyd

Answer 33

aero-thermodynamic-duct

Question 34

An athodyd (aero-thermodynamic-duct) which has no rotating parts and consists of a duct with a divergent entry and a convergent or convergent-divergent exit.

Answer 34

Ramjet

Question 35

the concept of this jet engine is: With a forward motion imparted by an external source, air is forced in the divergent inlet (increasing its pressure) the total energy of air is further increased by combustion of fuel and the rapid expanding gases accelerate to the atmosphere through the outlet duct.

Answer 35

Ramjet

Question 36

It can be run at static conditions unlike the ram jet and is constructed with a robust construction.

Answer 36

Pulse Jet

Question 37

In pulse engine, its inlet duct has ______________ to the open position

Answer 37

spring loaded inlet valves

Question 38

the operation of this engine is : as air passes to the combustion chamber, it produces high pressures as to force the valves close. As the exhaust gases exits, this creates a low pressure allows the valves to open and repeat the cycle.

Answer 38

Pulse Jet

Question 39

Unstable as a powerplant due to high fuel consumption and cannot match performance of modern gas turbine engines.

Answer 39

pulse jet

Question 40

It is a variant of a ramjet air breathing jet engine in which combustion takes place in supersonic airflow.

Answer 40

Scram Jet

Question 41

Another name of scram jet

Answer 41

Supersonic combustion ramjet

Question 42

What's the difference of scramjet and ram jet

Answer 42

Ramjet: It decelerates the air to subsonic velocities before combustion. Scramjet: It is supersonic throughout the entire engine.

Question 43

This engine operate efficiently at high speeds

Answer 43

scramjet

Question 44

A jet engine that does not use atmospheric air as a propulsive fluid stream (non-air breathing).

Answer 44

rocket engine

Question 45

Rocket engines uses _________ thus enabling outside atmosphere operations

Answer 45

propellants.

Question 46

The _____________ is the air delivered by the compressor.

Answer 46

mass

Question 47

What delivers air as mass?

Answer 47

compressor

Question 48

____________ is the difference between the outlet velocity of the air to that of its inlet velocity due to the addition of the heat energy.

Answer 48

acceleration

Question 49

In gas turbine engines, combustion occurs at constant ____________.

Answer 49

pressure

Question 50

Power is developed in the _________________.

Answer 50

turbine of the engine

Question 51

The processes occur in a ____________manner in a gas turbine engine.

Answer 51

continuous

Question 52

In a four-stroke piston engine,____________ stroke is utilized in producing power, the other __________are effectively absorbing power.

Answer 52

one three

Question 53

In relation to a four-stroke piston engine, the gas turbine engine eliminates the _______________strokes, allowing more time for fuel combustion.

Answer 53

three idle

Question 54

Theoretically, combustion in the gas turbine occurs at a constant _____________. This is achieved partly because of the continuous process of the __________ cycle, and also the fact that the combustion chamber is not an enclosed space.

Answer 54

Pressure Brayton