AMS 274 - Final Exam [ACTUAL EXAM] LATEST VERSION
[QUESTIONS AND ANSWERS] WITH PRACTICE EXAM
DETAILED AND VERIFIED FOR GUARANTEED PASS-
LATEST UPDATE 2025 GRADED A (BRAND NEW!!)
What was whittles biggest problem - ✔✔✔✔✔ The combustor
What was whittles engine called - ✔✔✔✔✔ the w-1
What did moss do ? - ✔✔✔✔✔ Invented turbosupercharger
Newton's Third Law - ✔✔✔✔✔ For every action there is an equal and opposite
reaction
What was the aerocomets engine - ✔✔✔✔✔ first low turbo jet
What was the aerocomets flight time - ✔✔✔✔✔ 30 Mins
never used in combat
What was significant about the gloster meteor ? - ✔✔✔✔✔ a British aircraft that was
successfully used against the V1 bomber
General electric - ✔✔✔✔✔ Developed first American prototype turbojet (GE-I-A)
CFM56 and Leap Engine
Next gen in the adaptive cycle
What kind of engine is the CFM 56 - ✔✔✔✔✔ High bypass turbofan engine
Pratt and Whitney - ✔✔✔✔✔ JT3C engine on the 707 during roll
JT9D powered 747
Barred from making turbine engines during WW2
What was the first successful airliner in the united States - ✔✔✔✔✔ the boeing 707
Bernoulli's Principle - ✔✔✔✔✔ air is incompressible at subsonic flow rates
Newtons laws - ✔✔✔✔✔ 2nd. force = mass x acceleration
3rd. for ever acting force there is an equal and opposite reacting force
, One in one out - ✔✔✔✔✔ one unit of mass airflow in and one unit of mass airflow out
Centrifugal Compressors - ✔✔✔✔✔ smaller engines
radial outflow compressor
Advantages of centrifugal compressors - ✔✔✔✔✔ High pressure rise 10:1 and 15: in
dual stage
low weight
low starting power requirements
good efficiency
Axial Flow - ✔✔✔✔✔ Airflow parallel to the axis of the engine
Types of axial flow compressors - ✔✔✔✔✔ single, dual, and triple spool
advantages of axial flow compressors - ✔✔✔✔✔ 1. high peak efficiencies
2. small frontal area reduces drag
3. straight through-flow, allowing for high ram efficiency
4. combustion efficiency is better than centrifugal compressors (increased pressure rise
by increasing the number of stages)
5. with the dual/twin/split spool, starting flexibility is greater and it has improved high-
altitude performance
Convergent and Divergent Ducts - ✔✔✔✔✔ Con - V up and P down
Div - V down and P up
What is a fixed turbine - ✔✔✔✔✔ mechanical linkage to compressor
Free turbine - ✔✔✔✔✔ A turboshaft engine with no physical connection between the
compressor and power output shaft
Gross and Net Thrust - ✔✔✔✔✔ G = Force the engine exerts against its mounts while
operating but not moving (static and higher)
N = Thrust during flight (lower)
Thrust from turbo prop exhaust and propeller - ✔✔✔✔✔ 75-95 percent from prop
5-25 percent from exhaust
3 different ways of blade replacement - ✔✔✔✔✔ two = 180 degrees apart
three = 120 degrees apart
single blade = same weight/moment
[QUESTIONS AND ANSWERS] WITH PRACTICE EXAM
DETAILED AND VERIFIED FOR GUARANTEED PASS-
LATEST UPDATE 2025 GRADED A (BRAND NEW!!)
What was whittles biggest problem - ✔✔✔✔✔ The combustor
What was whittles engine called - ✔✔✔✔✔ the w-1
What did moss do ? - ✔✔✔✔✔ Invented turbosupercharger
Newton's Third Law - ✔✔✔✔✔ For every action there is an equal and opposite
reaction
What was the aerocomets engine - ✔✔✔✔✔ first low turbo jet
What was the aerocomets flight time - ✔✔✔✔✔ 30 Mins
never used in combat
What was significant about the gloster meteor ? - ✔✔✔✔✔ a British aircraft that was
successfully used against the V1 bomber
General electric - ✔✔✔✔✔ Developed first American prototype turbojet (GE-I-A)
CFM56 and Leap Engine
Next gen in the adaptive cycle
What kind of engine is the CFM 56 - ✔✔✔✔✔ High bypass turbofan engine
Pratt and Whitney - ✔✔✔✔✔ JT3C engine on the 707 during roll
JT9D powered 747
Barred from making turbine engines during WW2
What was the first successful airliner in the united States - ✔✔✔✔✔ the boeing 707
Bernoulli's Principle - ✔✔✔✔✔ air is incompressible at subsonic flow rates
Newtons laws - ✔✔✔✔✔ 2nd. force = mass x acceleration
3rd. for ever acting force there is an equal and opposite reacting force
, One in one out - ✔✔✔✔✔ one unit of mass airflow in and one unit of mass airflow out
Centrifugal Compressors - ✔✔✔✔✔ smaller engines
radial outflow compressor
Advantages of centrifugal compressors - ✔✔✔✔✔ High pressure rise 10:1 and 15: in
dual stage
low weight
low starting power requirements
good efficiency
Axial Flow - ✔✔✔✔✔ Airflow parallel to the axis of the engine
Types of axial flow compressors - ✔✔✔✔✔ single, dual, and triple spool
advantages of axial flow compressors - ✔✔✔✔✔ 1. high peak efficiencies
2. small frontal area reduces drag
3. straight through-flow, allowing for high ram efficiency
4. combustion efficiency is better than centrifugal compressors (increased pressure rise
by increasing the number of stages)
5. with the dual/twin/split spool, starting flexibility is greater and it has improved high-
altitude performance
Convergent and Divergent Ducts - ✔✔✔✔✔ Con - V up and P down
Div - V down and P up
What is a fixed turbine - ✔✔✔✔✔ mechanical linkage to compressor
Free turbine - ✔✔✔✔✔ A turboshaft engine with no physical connection between the
compressor and power output shaft
Gross and Net Thrust - ✔✔✔✔✔ G = Force the engine exerts against its mounts while
operating but not moving (static and higher)
N = Thrust during flight (lower)
Thrust from turbo prop exhaust and propeller - ✔✔✔✔✔ 75-95 percent from prop
5-25 percent from exhaust
3 different ways of blade replacement - ✔✔✔✔✔ two = 180 degrees apart
three = 120 degrees apart
single blade = same weight/moment
