# Presentation: 691547

## April 4 - 5, 2000 

**April 4 - 5, 2000 **

- <date/time>

**at Lewis Field**

**GLENN RESEARCH CENTER**

**ULTRA EFFICIENT ENGINE TECHNOLOGY (UEET) PROGRAM**

**Joe Shaw**
**Manager, UEET Program Office **

## PROGRAM OVERVIEW

***V*****ision**:   **Develop and hand off revolutionary propulsion technologies that will enable future generation vehicles over a wide range of flight speeds.**
***G*****oals:**
**Propulsion technologies to enable increases in efficiency and therefore fuel burn reductions of up to 15 % (equivalent reductions in CO****2**** )**
**Combustor technologies (configuration and materials) which will enable reductions in LTO* NO****x**** of 70% relative to 1996 ICAO standards. **

***Landing/Take-off**

## INVESTMENT AREAS

**Combustion**

**Materials and Structures**

**Turbomachinery**

**Propulsion/Airframe Integration**

**Propulsion Systems Integration & Assessment**

**INVESTMENT AREAS**

**GRC Lead**

**GRC Lead**

**GRC Lead**

**GRC Lead**

**LaRC Lead**

## NASA’s Technology Readiness Level (TRL) Scale Applied to UEET Program

-   9	Actual system “flight proven” on operational flight
-   8	Actual system completed and “flight qualified” through test and demonstration
-   7	System prototype demonstrated in flight environment
-   6	System/subsystem model or prototype demonstrated/validated in a relevant environment
-   5	Component and/or breadboard verification in a relevant environment
-   4	Component and/or breadboard test in a laboratory environment
-   3	Analytical and experimental critical function, or characteristic proof-of-concept
-   2	Technology concept and/or application formulated (candidate selected)
-   1	Basic principles observed and reported

- System Test and Operations

- System/Subsystem Development

- Technology Demonstration

- Technology Development

- Research to Prove Feasibility

- Basic Technology Research

- UEET Program

- Industry Role

- Government Role

- HSR and AST Planned Span

**NASA’s Technology Readiness Level (TRL) Scale Applied to UEET Program**

## PROGRAM HIERARCHY

**PROGRAM HIERARCHY**

**TRL 3-5**

**UEET (Foundational) Program**

**Integrated Component Technology Demonstration Programs**
**(with risk sharing partners)      TRL 5-6+**

**(e.g.  UEET Augmentation, Revcon, DARPA)**

**Technology flow**

**Technology  flow**

**OAT Base R & T Programs**

**TRL 1-3**

**Time**

## OVERVIEW

**Goal Factors**

**Goal**

**Objectives**

**Increase Turbine Engine Performance and**
**Efficiency (Fuel Burn 8-15% Reduction),**
** ****Reduce Emissions (70% Reduction in LTO Levels)**

**Propulsion System Weight**

**Increase Stage Loading**
**Lightweight Materials and Structural Concepts**

**Ultra Low NOx Combustor**

**High Cycle Temperature / Pressure**
**High Temperature Materials**
**Increase Cooling Effectiveness**

**Low Drag Nacelles**

**Component Efficiency Improvements**

**Characterization of Particulates Aerosol Production**

**Emissions Impact**

**Emissions Production**

**Cycle Performance**

**Installation Drag**

**Component Efficiency**

- <date/time>

**OVERVIEW**

## BASELINE VEHICLES AND PROPULSION SYSTEMS

_**Reference Baseline Vehicle**_
**300+ PAX Long-Range Twin,**
**	****Subsonic Transport**
**	****(NASA 777)**

_**Reference Baseline Engine**_
**NASA High BPR Turbofan**
**	****(GE90/PW4080)**

**250+ PAX Long-Range Quad,**
**	****Supersonic Transport**
**	****(HSR TC)**

**10+ PAX Long-Range Twin**
**       ****	**** ****Supersonic Business Jet**
** **

**NASA Regional Turbofan**
**	****(AE3007)**

**NASA Turbofan**
**	****(Current Technology)**

**NASA Military Turbofan**
**	****(Current Technology)**

**NASA Turbofan**
**	****(Current Technology)**

**NASA Turbofan**
**	****(Current Technology)**

**50+ PAX Regional Twin,**
**      ****	**** ****Subsonic Transport**
**      ****	**** ****(NASA EMB145)**

**Military,**
**	****UCAV**

**Hypersonic Transport,**
**	****Space Access**

**BASELINE VEHICLES AND PROPULSION SYSTEMS**

**4 - 6 PAX **
**	****General Aviation**

**NASA Turbofan**
**	****(FJX-2)**

## Ultra High Bypass Configuration

**Ultra High Bypass Configuration**
**(Subsonic transport application)**

**Moderate Bypass Configuration**
**(Supersonic business jet application)**

**Low Bypass Configuration**
**(Military fighter application)**

**Turbine Based Combined Cycle**
**(Hypersonic cruise /**
**access-to-space applications)**

## A Vision for an “Autonomous Propulsion System”

**• ****A sensing combustion system which minimizes emissions production.**
**• ****Aspirating turbomachinery components (fan, compressor, and turbine) which**
**  ****maximize performance and operability while minimizing propulsion system noise**
**• “****Variable geometry” inlets and nozzles to maximize system performance.**
**• ****Revolutionary high temperature engine materials to enable the higher cycle**
**  ****temperatures and pressures with commercial life requirements considered.**
**• ****Intelligent propulsion system controls to provide proactive health management**
**  ****and increased component life as well as safety.**

**A Vision for an “Autonomous Propulsion System”**
**To Propel Future Aero-space Vehicles**

**An “autonomous propulsion system” senses and adapts to the changing environment throughout the mission without the need for human intervention**

***The UEET Program will provide the foundation which will enable this vision to be realized!***

## REVISED UEET PROGRAM

**REVISED UEET PROGRAM**

**Intelligent Propulsion**
**Controls**

**Combustion**

**Materials and Structures**

**Turbomachinery**

**Propulsion/Airframe Integration**

**Propulsion Systems Integration & Assessment**

**GRC Lead**

**GRC Lead**

**GRC Lead**

**GRC Lead**

**LaRC Lead**

**ARC Lead**

## UEET

**W****ork with the U. S. industry to provide technology readiness to reduce combustion emissions of future aircraft:**
**  ****70% LTO NO****x**** reduction for large and regional subsonic engines**
**  ****Ultra low levels of cruise NOx for supersonic aircraft**
**  ****Validated combustor analysis and design codes**

**Flame tube**

**Annular rig**

**Engine validation**
**(partnership with industry)**

- Sector

**Combustion Project**

***UEET***

## UEET

***D*****evelop and demonstrate through component tests and analyses**
**the turbomachinery technologies required for lightweight, reduced**
**stage cores, low pressure spools, and propulsors for high-performance,**
**high efficiency and environmentally compatible propulsion systems.**

**Turbomachinery Project**

***UEET***

**Streamlines and**
**heat transfer over turbine blade with recess in tip**

**Cooled Vane**
**Grid Detail incl. **
**Cooling Holes & **
**Internal Passages**

**3D Coupled Internal/External Simulation **
**of Film-Cooled Turbine Vane**

**Wall Heat Flux**
**on Internal **
**Plenum, Holes,**
**& Vane Surface**

## UEET

***D*****evelop and demonstrate high **
**temperature engine material systems which will **
**enable future high performance, environmentally **
**compatible turbine engine propulsion systems**
** ****Ceramic matrix composite (CMC) combustor liner**
** ****CMC turbine vane**
** ****Turbomachinery disk and turbine airfoil**
***D*****evelop innovative low weight structural concepts**

**Materials and Structures Project**

***UEET***

## UEET

***D*****evelop and demonstrate technologies which will enable**
**low drag, high performance propulsion system integration **
**for a wide range of vehicle classes**
** ****Validated, rapid turnaround design tools**
** ****Active flow control**
** ****Active shape control**

**Propulsion/Airframe Integration Project**

***UEET***

## Under construction !

**Intelligent Systems (IS)**

**Propulsion Technologies**

**Integrated Airframe-Propulsion**
**Controls Technologies**

**Intelligent Propulsion**
**Controls Project**

***UEET***

**(ARC)**

**(GRC)**

**(ARC)**

**(DFRC, LaRC)**

## UEET

***P*****rovide system level guidance **
**for programmatic decision making**
** ****System trade studies**
** ****Technology assessments (metrics tracking and rollup)**
***A*****ssess the effects of engine exhaust products on the atmosphere**
**and humans**
***P*****erform high fidelity system simulations to reduce experimental**
**testing required and predict characteristics of future turbine engine propulsion systems**

**Propulsion Systems Integration & Assessment**
**Project**

***UEET***

## THE  UEET “ROADMAP”

**“****Ultimate” Turbine**
**  ****Engine Systems**
** ****Fuel burn**
** ****Weight**
** ****Emissions**
** ****Noise**
** ****Safety**
** ****Reliability**

**Periodic assessments/**
**redirections**

**Integrated component technology  validations **
**(in partnership with other government agencies **
**and/or industry)        **

**THE  UEET “ROADMAP”**

**UEET Technologies**
**Components**
**Materials and structures**
**Intelligent propulsion controls**

## CONCLUDING REMARKS

**The UEET Program will provide the revolutionary technologies needed to enable future turbine engine propulsion systems for a wide variety of aerospace vehicles.**
**Systems requirements studies done with the U. S. industry will provide key inputs to determining the long term direction for the program.**
**The UEET Program content will be adjusted on a regular basis so as to pursue the highest payoff technology set.**
**The UEET Program will partner wherever appropriate with NASA Base R&T Programs to transition technologies.**
**The UEET Program will actively seek partners to carry the technologies to a TRL6 to enable timely transitions to future industry application specific designs.     **