AMT Flashcards
Efforts to design a working gas turbine engine started at the
beginning of the
20th century
Advantages of turbine engines
- increase reliability
- longer mean times between overhaul
- higher airspeed
- ease of operation at high altitudes
- high power to weight ratio
During the _____, a gradual transition began from piston power to gas turbine jets and turboprops.
1950s
Classic workhorses like the ____ and ____ gave way to the ____ and ____
- DC-3
- DC-7
- Boeing 707
- DC-8
What law of motion is being applied for the jet propulsion
Third law of motion
What is the action and reaction in jet propulsion
Action: Acceleration of the air
Reaction: Forward Movement (Thrust)
Can be described as the propelling force generated in the direction
opposite to the flow of a mass
Jet propulsion
Can be described as the propelling force generated in the direction opposite to the flow of a mass of gas or liquid under pressure which is escaping through a hole or opening called a ____.
Jet nozzle
During this year a toy was devised using the reaction principle
250 BC
a writer and mathematician
who devised a toy using this reaction principle
Hero
consisted of a covered kettle of water that was heated to produce steam.
Aeolipile
When and who invented gunpowder
1st Century AD by the Chinese
Chinese & Mongols use rockets as
Arrows of flying fire
When did the the chinese and mongols use arrows of flying fire
1232
Balance force will cause an object to
not move
Unbalanced force will cause an object to
move
Newton’s 2nd Law of Motion states
Force equals mass accelerated (F = ma)
2 ways on how to increase jet engine thrust
- increase the speed of exhaust gases
- increase the quantity of exhaust gases
The history of mechanical jet propulsion began in
1900
He submitted a thesis on gas turbine engines
Dr. Sanford Moss
What company did Dr. Moss became an engineer in
General Electric
Dr. Moss’s research influenced the development of what became the
first successful turbojet engine
He was granted his first patent for a jet engine
Dr. Frank Whittle
When did Frank Whittle applied for his first patent for a jet engine
1930
What aircraft was use for the first flight of Whittle’s engine
Gloster E28/39
Thrust and speed of Whittle’s engine
- 100lbs
- 400mph/644kmh
What type of engine did Whittle developed
gas turbine engine
What type of engine did Ohain developed
jet engine
a German engineer, designed and built a jet engine
Hans Von Ohain
How much thrust did Ohain’s engine produced
1100 lbs
What aircraft was used to install Ohain’s engine
Heinkel He-178
When did the Heinkel He-178 made a successful flight
August 27, 1939
it is recognized as the first practical flight of a jet-propelled aircraft
Heinkel HeS 3 Turbojet engine
General Electric Company received a contract to research
and develop a gas turbine engine in
1941
a centrifugal- compressor type engine that produced approximately 1,650 pounds of thrust
GE-IA
How much thrust was produced on GE-IA
1650 lbs
What aircraft used GE-IA as its engine
Bell XP59 “Airacomet”
How many GE-IA was used to power the Bell XP59 “Airacomet”
2
When was the first flight of Bell XP59 “Airacomet”
October 1942
Why was the Bell XP59 “Airacomet” never used in combat
Limited flight time of 30 min
Currently, several manufacturers produce entire lines of jet-powered aircraft that cruise in excess of
600 mph / 965 kmh
a supersonic commercial aircraft built collaboratively by a British and French consortium
Concorde
Concorde was in service from ___ through ___
1976 to 2003
The Concorde was capable of flying at
___ times the speed of sound.
2.2
Engines that convert heat energy to mechanical energy
Heat engine
Types of combustion engine (heat engine)
- External
- Internal
Types of internal combustion engine
- Reciprocating engine
- Jet engine
USE WASTE EXHAUST GAS FROM THE ENGINE TO DRIVE A SMALL TURBINE AND IN TURN POWERS A COMPRESSOR
Turbo supercharger
When did Whittle’s engine completed its first flight
May 15. 1941
Whittle’s engine component
- AIR COMPRESSOR
- COMBUSTION CHAMBER
- TURBINE
- EXHAUST
Whittle formed the company called
Power Jets
FIRST OPERATIONAL BRITISH FIGHTER
Gloster meteor
When was Whittle knighted?
1948
Difference between Whittle’s engine and Ohain’s engine
- Whittle (Centrifugal compressor)
- Ohain (Axial flow compressor)
