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5/21/2018 GE helitech

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Helicopter Engine Technology for the21st Century

Mike Epstein

GE Military PropulsionEngineering

October 7, 2010

9th Symposium On Jet Enginesand Gas Turbines

Technion, Haifa


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2

GE Aviation

GE Businesses a

nd Portfolio

EnergyInfrastructure

TechnologyInfrastructure

NBC UniversalConsumer &

Industrial

$37B $43B $10B$15B

CommercialCommercial

Services SystemsBusiness &

General AviationMilitary engines

& Services

$4.1B $7.1B $4.2B $2.9B $0.4B

Capital

$51B

F110 T700F136 GE38 T64F414


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3

GE Aviation

GE Helicopter Engine ExperienceU.S. Military

International Military

Commercial/Civil CH-53K

S-92

T64

GE38

CT58/T58

CT7/T700

50 Years/80+ Million Hours Of Experience


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4

GE Aviation

Military rotorcraft environment: hot, high

and harsh.

Search and rescueCargo lift Attack

SupplySpecial Ops


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5

GE Aviation

Helicopters and engines operating in desert are subjected to

extreme sand environments

CH-53E Landing in Desert


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6

GE Aviation

T64 Compressor Following Service In

Desert:

Airfoil Erosion.Degraded power and stall margin.

Engine removals after only 100

hours.


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7

GE Aviation

Voice of the CustomerTechnology Needs

Sand tolerant compressors and

turbines for desert operations

Higher power and higher power to

weight ratios to conduct missions

in high / hot environment

Reduced fuel burn Extend mission payload/ range.

Minimize fuel logistics footprint.

Reduce fuel costs.


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8

GE Aviation

Compressors with robust

geometry, materials and erosioncoatings

Sand tolerant hot sections Environmentally tolerant coatings Clean cooling air circuits designed with

CFD

Improved inlet particleseparators

Sand tolerant coatings and engine

architecture Blisk with TiN Coating

CFD Modeling of inlet particleseparator


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9GE Aviation

Erosion Coating Technology proven on T64 Engine

Extended Time on Wing 2-3X

coatednon-coated

T64 Rainbow Compressor Sand Ingestion Test at Kirtland AFB


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10GE Aviation

Physical Ng limit

Corrected speed limit

Fuel flow limit

Temperature limit

Sea Level6000 feet

12,000 feet

OAT

SHP

Engine Lapse Rate and Limiters

Engine SHP limiters limited by

Corrected speed materials/ design

Fuel flow efficiency/ system design

Turbine Temperature materials / design

Compressor Physical speed materials / design

Typical engine power lapse rate

Materials anddesign

technologyadvances allowthese limits tobe raised.


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11GE Aviation

Technologies for increased power and

improved fuel burnHigher efficiency thermodynamiccycles

Improved compressor and turbine efficienciesfrom CFD

Reduced cooling flows

Higher Pressure ratios

Higher Turbine Temperatures

Improved Materials / Processes/Designs Ceramic Matrix Composite turbine components Advanced blade cooling designs

Technology Reducing Operating Costs


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12GE Aviation

Innovations for tomorrow . . .Leaving no stone unturned

Fuel burn technologies . . .Aero, loading, component efficiency, weight

Advances in materials . . .Metallurgy, composites, ceramics

Nanotechnology . . .Unique strength, weight, fatigue properties

Alternative Fuels . . .Ensuring broad operational capability

Novel titaniumalloys

Ceramic-matrix

composites

Nano layers

Highly loadedcomponents

2015+


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13GE Aviation

Ceramic Matrix Composites (CMCs)Less weight and better performance with reduced cooling

Introducing compositesbeyond fan modules.

Benefits for highertemperature components:Turbine airfoils

Combustors.

1/3 density of metal forreduced weight

better fuel burn

CMC prototype turbine nozzle

GE Ceramic Composite Products Site. State

of Delaware, U.S.


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14GE Aviation

SFC and Power/Weight ImprovementTechnology continues to improve fuel efficiency andpower to weight ratio of turboshaft engines.

T55-714A

GE38-1B FATE Goal

AE1107C

PW150A

State-of-the-artproducttechnology

Developingtechnology

T55-714A

GE38-1B FATE Goal

AE1107C

PW150A

State-of-the-artproducttechnology

Developingtechnology

SFC versus Power to Weight

Power to Weight Ratio

SFC


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15GE Aviation

Helicopter payload and range benefitImpact of Advanced technology

Mission Radius

Pa

yload

Mission Radius

P

ayload

Helicopter with

Legacy Engine

Technology

Helicopter

retrofit with

Advanced

Technology

Engine

Improved SFCchanges slope

Improved Power increases

TOGW capability


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16GE Aviation

Continuous Technology Infusion has doubled thepower of the T700/ CT7 family

CT7-8C3,000 SHP

401701700

CT7-2A~1500 SHP

701D2,000 SHP

2X Power

CT7-82,600 SHP

FADEC

3D Aero Compressor

Hot Section DurabilityImprovements

Hot Section

Hot Section 3-Stg PT

401C701C

1,900 SHP

ITEP


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17GE Aviation

GE38-1B Applying the Technology

7500 SHP Class - Builds on T700 architecture

GE38 Versus T64 :

18% Improved SFC

57% More power

63% Fewer Parts

Engine mounted FADEC with

Prognostics & HealthManagement (PHM)

Sand tolerant andCorrosion ResistantMaterials

Top mounted accessories

Rugged Compressor witherosion coating

Modern turbineaerodynamics,materials and cooling

schemes

Simple, robust, long-life configuration


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18GE Aviation

GE38 Video


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19GE Aviation

Advanced technology programs.

AATEAdvanced Affordable Turbine Engine (US Army)

Program goal 25% specificfuel consumption; maintain T700weight; 65% power; and 35%acquisition and operational &

support.Detailed design reviewcompleted May 09 programsruns through Jan 12.

Engine Upgrade for Black Hawkand Apaches & Future Aircraft

Advanced cooling. Advanced Aero. IPS.


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20GE Aviation

Advanced technology programs.

ADVENTAdaptive Versatile Engine Technology (USAF)

Phase I: Detailed design of fan rig,

core and engine technology

demonstrators (9/09)

Phase II: Procure, assemble andtest fan rig and core engine. Full

engine demonstrator in planning.

Contract runs through 9/2013.

Position for Next Gen Air Vehicles.

Advanced cycle. CMCs. Advanced cooling.

Advanced Aero.


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21GE Aviation

Development programs

F136Joint Strike Fighter

Up to 5,000 aircraft potential.

Demonstrated successful engineoperation and obtained criticalvalidation data.

Test focus in 2010 6 engines,

approximately 1,000 hours. Currenttesting aligned to support CTOLfirst flight in 2011.

CMCs Advanced cooling. Advanced Aero. Controls


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22GE Aviation

Alternative FuelsEconomic, Strategic, Environmental

Source: The Oil Drum. Sam Foucher blog.

GOM oil spillmore regulation,slower growth, more costly oil.

Oil spot market pricescalm fornow.

- Last 18 months, flat and expensive.

- Tied to economic outlook.

Biofuelsmilitary and commercial

approval moving towards completion.

Biofuelsviable YESscalable?


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23GE Aviation

Summary

GE driving technology tomeet customer needs

GE is developing andleveraging technologiesto greatly improve

rotorcraft missioncapability High Hot operation

Harsh Environments

GE Technology reducescost of ownership


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