1. My Extended Project Qualification
Who Produces the Best Turbofan Engine: Rolls Royce or General Electric?
My Extended Project Qualification
Alex Humphrey

2. Presentation Content What is a turbofan?
The two engines that I will be analysing.
The production analysis
The market analysis
The performance analysis
The rating tables
My overall conclusion
Research Undertaken
My time Management
What have I Learnt?
Personal Review
Alex Humphrey

3. What is a Turbofan Engine?
Most used engine for commercial aircraft.
Is essentially a turbojet engine with a large intake fan at the front and a bypass section around the outside.
Bypass is where a proportion of the intake is allowed around the core of the engine.
Turbofans are more efficient than jet engines and more fuel economical.
The central core consists of:
A low/intermediate compressor
A high pressure compressor
Combustion chamber
High pressure turbine
Low pressure turbine
Exhaust funnel
Alex Humphrey

4. Rolls Royce Trent 1000 3-spool design Thrust-to-weight ratio of 6.01:1
Powers the Boeing 787 Dreamliner
Been in commercial use since October 2011
350kN take off thrust created
Bypass ratio of 10:1
Alex Humphrey

5. General Electric GE90 Uses a double spool system
Most powerful commercial engine available
Powers the Boeing 777 using only two engines
Capable of producing 590kN of thrust at take off
Use of composite materials in the fan blades
Commercial use since 1995.
Alex Humphrey

6. The Analysis Section
Alex Humphrey

7. Production Analysis Criteria Trent 1000 GE90 Materials Used
Speed of Production
Scale of Production
Alex Humphrey

8. Production Analysis Criteria Trent 1000 GE90 Materials Used
Titanium Alloy fan blades.
Super alloy turbine airfoils.
Titanium fan casing.
Composite fan blades with titanium edge.
Speed of Production
Scale of Production
Alex Humphrey

9. Production Analysis Criteria Trent 1000 GE90 Materials Used
Titanium Alloy fan blades.
Super alloy turbine airfoils.
Titanium fan casing.
Composite fan blades with titanium edge.
Speed of Production
3.7 days for full assembly.
Aim to increase speed and new production warehouse will help this.
Produce 225 engine a year.
1 engine every 1.67 days.
Rate set to increase further.
Assembled in the air.
Scale of Production
Alex Humphrey

10. Production Analysis Criteria Trent 1000 GE90 Materials Used
Titanium Alloy fan blades.
Super alloy turbine airfoils.
Titanium fan casing.
Composite fan blades with titanium edge.
Speed of Production
3.7 days for full assembly.
Aim to increase speed and new production warehouse will help this.
Produce 225 engine a year.
1 engine every 1.67 days.
Rate set to increase further.
Assembled in the air.
Scale of Production
455 engines since 2011.
1,161 engine orders on book.
Orders keep being placed.
Over 2,000 engines since 1995.
Best selling GE engine ever.
Continue to make sales
Alex Humphrey

11. Production Analysis Criteria Trent 1000 GE90 Materials Used
Titanium Alloy fan blades.
Super alloy turbine airfoils.
Titanium fan casing.
Composite fan blades with titanium edge.
Speed of Production
3.7 days for full assembly.
Aim to increase speed and new production warehouse will help this.
Produce 225 engine a year.
1 engine every 1.67 days.
Rate set to increase further.
Assembled in the air.
Scale of Production
455 engines since 2011.
1,161 engine orders on book.
Orders keep being placed.
Over 2,000 engines since 1995.
Best selling GE engine ever.
Continue to make sales
Alex Humphrey

12. Market Analysis Assessment Criteria Trent 1000 GE90 Economics Future
Uniqueness
Alex Humphrey

13. Market Analysis Assessment Criteria Trent 1000 GE90 Economics
Revenue increases 3%/Year
Total revenue = £6.9billion
Profit 14% lower than 2014.
Revenue up 109% since 2005
Aviation better than company
Aviation could rapidly increase
Future
Uniqueness
Alex Humphrey

14. Market Analysis Assessment Criteria Trent 1000 GE90 Economics
Revenue increases 3%/Year
Total revenue = £6.9billion
Profit 14% lower than 2014.
Revenue up 109% since 2005
Aviation better than company
Aviation could rapidly increase
Future
Developing production line
Release Trent XWB & 7000
New technology engines:
GE9X and LEAP
Uniqueness
Alex Humphrey

15. Market Analysis Assessment Criteria Trent 1000 GE90 Economics
Revenue increases 3%/Year
Total revenue = £6.9billion
Profit 14% lower than 2014.
Revenue up 109% since 2005
Aviation better than company
Aviation could rapidly increase
Future
Developing production line
Release Trent XWB & 7000
New technology engines:
GE9X and LEAP
Uniqueness
3-spool design
IP Power Offtake
10:1 bypass ratio
115,000lbs of thrust
Pressure ratio of 23:1
Great long distance
Alex Humphrey

16. Market Analysis Assessment Criteria Trent 1000 GE90 Economics Future
Revenue increases 3%/Year
Total revenue = £6.9billion
Profit 14% lower than 2014.
Revenue up 109% since 2005
Aviation better than company
Aviation could rapidly increase
Future
Developing production line
Release Trent XWB & 7000
New technology engines:
GE9X and LEAP
Uniqueness
3-spool design
IP Power Offtake
10:1 bypass ratio
115,000lbs of thrust
Pressure ratio of 23:1
Great long distance
Alex Humphrey

17. Performance Analysis Assessing Criteria Trent 1000 GE90 Fuel Economy
Emissions
Reliability
Alex Humphrey

18. Performance Analysis Assessing Criteria Trent 1000 GE90 Fuel Economy
12% better than Trent 800
1000-TEN is 3% better
At take off the fuel consumption is 3,750 gallons/hour
Emissions
Reliability
Alex Humphrey

19. Performance Analysis Assessing Criteria Trent 1000 GE90 Fuel Economy
12% better than Trent 800
1000-TEN is 3% better
At take off the fuel consumption is 3,750 gallons/hour
Emissions
40% lower than legal amount
Low fuel burn initiative
Dual-dome combustor reduces: NOx and smoke.
Reliability
Alex Humphrey

20. Performance Analysis Assessing Criteria Trent 1000 GE90 Fuel Economy
12% better than Trent 800
1000-TEN is 3% better
At take off the fuel consumption is 3,750 gallons/hour
Emissions
40% lower than legal amount
Low fuel burn initiative
Dual-dome combustor reduces: NOx and smoke.
Reliability
99.99% dispatch reliability
Ship replacements anywhere
99.98% dispatch reliability
0.001 inflight shutdown rate
Alex Humphrey

21. Performance Analysis Assessing Criteria Trent 1000 GE90 Fuel Economy
12% better than Trent 800
1000-TEN is 3% better
At take off the fuel consumption is 3,750 gallons/hour
Emissions
40% lower than legal amount
Low fuel burn initiative
Dual-dome combustor reduces: NOx and smoke.
Reliability
99.99% dispatch reliability
Ship replacements anywhere
99.98% dispatch reliability
0.001 in flight shutdown rate
Alex Humphrey

22. Rating of importance of criteria
Rating Tables
Assessment Criteria
Rating of importance of criteria
Rolls Royce
General Electrics
PRODUCTION ANALYSIS
Materials Used 10 6 8
Speed of production 7 9
Scale of production
TOTAL 30 19 25
Alex Humphrey

23. Rating of Importance of Criteria
Assessment Criteria
Rating of Importance of Criteria
Rolls Royce
General Electric
MARKET ANALYSIS
Economics 10 8
Uniqueness 5 4
Future 9
TOTAL 25 21 23
Alex Humphrey

24. Rating of Importance of criteria
Assessment Criteria
Rating of Importance of criteria
Rolls Royce
General Electric
PERFORMANCE ANALYSIS
Fuel Economy 10 8 7
Emissions 9
Reliability
TOTAL 30 27 24
Alex Humphrey

25. 85 67 72 Total Available Score Trent 1000 GE90 Overall Total
Alex Humphrey

26. Overall Conclusion In my opinion GE create better engines because:
They have a greater proportion of the overall market share.
The engines are more durable and better quality.
GE’s vast revenue, allows them to invest more in R&D.
GE have a superior production centre and process.
They use Carbon Fibre Composites, which have more desirable attributes.
Alex Humphrey

27. The Research I have Undertaken
In order to collect unbiased and valid pieces of information I:
Used many websites to validate my facts and statistics
Used press pages to ensure I had the most recent information
Attempted to the companies to get more validation however I am yet to receive an .
Used university notes to get the most detailed facts to back up my arguments.
I went through all these stages to ensure that my argument was as unbiased as possible and the facts tat I was collating were genuine and not manipulated.
Alex Humphrey

28. Time Management
I have learnt that time management is key for an extended project.
At my mid-term review I realised I was a long way off my first projected plan so I altered my time scale to achieve the deadline.
In hindsight I should have followed my original time scale as this would have meant that I wouldn’t of had to sacrifice other commitments
Alex Humphrey

29. What have I Learnt? The main points I have learned are:
Plan, review, do. Was a very useful moto for me whilst doing my EPQ and meant that I was always sure of what I was going to do and when.
I have learnt to begin the project sooner as this alleviates stress further down the line.
I have also learnt to not be afraid to send s to anyone and everyone who can help as they are most likely going to be happy to help.
Alex Humphrey

30. Personal Review
I am very happy with my project, as it is highly detailed and reaches a valid conclusion, which I would feel confident talking about to anyone.
I have achieved a greater confidence to approach people to help me in my EPQ.
I have learnt how to plan my time efficiently and manage if I deviate from the plan.
I am also pleased as this really helps me with my application for a higher apprenticeship in mechanical engineering or aeronautical engineering, as it shows my interest in this subject.
I have really enjoyed learning about the aeronautical industry as well as the satisfaction of completing this task.
I have also enjoyed putting all my skills that I have learnt at school into practice.
Alex Humphrey

31. Thanks for Watching!
Alex Humphrey