Jet engines 101 >> - Airfinance Journal€¦ · Jet engines 101 New York Engine Day. 2 ... Basic...
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1/ CFM / 20 October 2011 CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE >> CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE Jet engines 101 New York Engine Day
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Transcript of Jet engines 101 >> - Airfinance Journal€¦ · Jet engines 101 New York Engine Day. 2 ... Basic...
1 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Jet engines 101
New YorkEngine Day
2 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Jet Engines
Great pieces of technology that can power anything …
3 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Cars
4 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Trains
5 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
School bus
6 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Lawn Mowers
7 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Anything
8 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Really anything!
9 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Really ??? !!!
10 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
But at CFM, we like to power airplane best …So, let’s see how it works !
11 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
How engines work
12 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Basic Jet Propulsion
THRUST = mV
Speed V
Massflow m
13 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Different Types of Aircraft Propulsion
PROPELLER PROPULSION
JET PROPULSION
HYBRID PROPULSION
14 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
How does it work ?
15 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
How does it work ?
16 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Current engines like CFM56
17 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
What is By –Pass Ratio
18 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
What is this By-pass ratio everybody talk about ?
19 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
By-pass ratio
20 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
By-pass ratio
21 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
The Concept of By-pass Ratio
1 Air
3
3
2
2
3 2By-pass ratio =
Mass flow / Mass flow
Increase in by-pass ratio improves SpecificFuel Consumption (SFC)
22 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
By-pass Ratio improves SFC
-20%
Low by-pass Ratio engine
High by-pass Ratio engine
By-pass ratios have increased over timeCurrent engines: By-pass ratios 5 to 6New/future engines: By-pass ratio ~10
High by-pass Ratio engine
Low by-passRatio engine
23 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Fuel wording
SFC: Specific Fuel ConsumptionThis is the fuel burnt by the engine on a test standIt characterize the quality of the engine
FB: Fuel BurnThis is the fuel burnt over a given mission on wing
24 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Ground Clearance
By-pass Ratio Limitations
By-pass ratio can be limited by installation on A/C
25 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
How New Engines Work
26 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
From CFM56 to LEAP
27 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
The Core brings power to the system
28 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Why is the core important ?
29 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Why is the core important ?
30 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Geared Turbo Fan like the Pure Power
31 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Geared Turbo Fan like the Pure Power
32 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Engine choice on an aircraft
33 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Example: Boeing 777, 3 engines choice
GE 90 Pratt 4000 Trent 800
34 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Can I mix my engines ?NO, sorry but you can not mix engines on an aircraftYou always need to have a matching pair
OK NO
35 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
Can I swap both engines ?NO or very rarely:• You need to modify part of the wing to accept one engine
or the other• Different engines are not « plug & play »
or
$
?
36 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
37 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
>>CFM International Proprietary Information subject to the restrictions on the cover of this presentation
CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
38 /CFM /
20 October 2011CFM International Proprietary Information subject to the restrictions on the cover of this presentation CFM, CFM56, LEAP56, and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma and GE
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