15.1 Fundamentals

Question 1

What is the unit of work and energy?

Answer 1

Joules

Question 2

What is the equation for kinetic energy?

Answer 2

Kinetic energy = 1/2 x mass x velocity(2)

Question 3

What is kinetic energy?

Answer 3

Energy in motion

Question 4

What is potential energy?

Answer 4

Energy at rest

Question 5

What is newtons 1st law?

Answer 5

Law of inertia

Question 6

What is newtons 2nd law?

Answer 6

Force = mass x acceleration

Question 7

What is the law of GTEs?

Answer 7

Newtons 2nd law

Question 8

What is newtons 3rd law?

Answer 8

Law of action and reaction

Question 9

What is the law of turbojet engines?

Answer 9

Newtons 3rd law

Question 10

How many changes of state are there?

Answer 10

4

Question 11

What is the imperial (English) unit for force?

Answer 11

Pounds (lbs)

Question 12

What is the metric unit for force?

Answer 12

Newtons (N)

Question 13

What is the equation for power?

Answer 13

Power = work / time

Question 14

What is the equation for work?

Answer 14

Work = force x distance

Question 15

What is the equation for acceleration?

Answer 15

Acceleration = change in velocity / time

Question 16

What are the 2 types of engines?

Answer 16

Piston type and gas turbine type

Question 17

What % of thrust do turbofan engines produce from the fans?

Answer 17

80%

Question 18

What is N1, N2 and N3 in a triple spool engine?

Answer 18

N1 = LP spool, N2 = IP spool, N3 = HP spool

Question 19

What is N1 and N2 in a dual spool engine?

Answer 19

N1 = LP spool and N2 = HP spool

Question 20

What is the LP spool connected to?

Answer 20

Fan

Question 21

What does the hot section consist of?

Answer 21

Areas past the compressors

Question 22

What does the cold section consist of?

Answer 22

Area from inlet to compressors/diffusers

Question 23

Do you require rebalancing after a module change on a modular engine?

Answer 23

No