Subscribe to our free daily newsletters
  Space Industry and Business News  

Subscribe to our free daily newsletters

New Turbines Can Cut Fuel Consumption For Business Jets

Every second, the pressure sensors attached to the turbine rotor in the test bed in Gottingen take 250 000 measurements. Since the rotor is spinning, data is transmitted via telemetry. Credit: Rolls-Royce Deutschland.
by Staff Writers
Bremen, Germany (SPX) Jan 21, 2009
Aero engines of the future should be environmentally friendly and cost-efficient. Scientists at the German Aerospace Center (Deutsches Zentrum fur Luft- und Raumfahrt; DLR) in Gottingen are currently testing an innovative single-stage supersonic high-pressure turbine on behalf of Rolls-Royce that fits that description exactly.

The turbine is designed be used in business jets.

DLR test bed for high-pressure turbines unique in Germany
The new high-pressure turbine makes it possible to develop engines with a good balance between costs and performance in the lower thrust range. Before the turbine can be used in an engine, however, its flow characteristics must be closely examined.

"The only test bed in Germany suitable for this purpose is the one at DLR in Gottingen", says Dr Erik Janke, who is responsible for turbine aerodynamics at Rolls-Royce Germany. The turbine is one of the most important components of an aero engine. It transforms the energy released by fuel combustion into motion used to drive the compressor.

Dr Ingo Rohle, Head of the Turbine Department (Abteilung Turbine) of the DLR Institute of Propulsion Technology (DLR-Institut fur Antriebstechnik), explains what makes the test bed in Gottingen so special:

"The turbine test bed enables us to operate almost life-size high-pressure turbines using the correct Mach number and air properties. This means that we can accurately simulate the conditions that will occur when the turbine is actually used in the engine."

Engine research for environmental protection and high-tech employment in Germany

The new turbine will reduce the engine's energy consumption and thus its CO2 emissions, in addition to reducing production costs.

"In this way, engine research contributes in a very practical way to protecting the environment, while at the same time it helps to secure high-tech employment in Germany in general, and in the Gottingen region in particular", says Dr Rohle. The expertise gained by DLR in this field also benefits other industries, for instance in the energy sector.

The first of two series of measurements for Rolls-Royce Germany was successfully completed in 2007. The results of the second series of tests, which is currently under way, will help to determine the turbine's final design.

Sensors measuring pressure, temperature and other parameters determine the turbine's aerodynamic characteristics during the tests.

The pressure inside the turbine, for instance, is measured using high-speed pressure transducers that collect data at a rate of 250 000 measurements per second. Over the course of the measurement campaign, this process alone generates a total data volume of 100 gigabytes that then needs to be analysed.

DLR develops a test turbine for Rolls-Royce aero engines
Before the first measurement can be taken, however, the scientists must make sure that the turbine rotor's mechanical strength is high enough to withstand the strong forces exerted on it during operation, and that the rotor is free from vibrations.

After all, at maximum speed a rotor blade experiences a force equivalent to 37 000 times the Earth's gravitational pull. By way of comparison, an astronaut on board the Space Shuttle experiences a force of about three times the Earth's gravitational pull during takeoff. Careful assembly of the test turbine in the workshop at DLR Gottingen is also crucial to the successful completion of the measurement campaign.

The project is funded through the aeronautics research programme of the German Federal Ministry of Economics and Technology (Bundesministeriums fur Wirtschaft und Technologie; BMWi). About 2.5 million euro is made available for the research conducted in Gottingen. Rolls-Royce has been a leading manufacturer of aero engines for decades.

It has two sites in Germany. Thanks to the very promising results obtained so far, Rolls-Royce has already been able to successfully negotiate a contract for an engine based on this new high-pressure turbine technology. DLR is the national aerospace research centre of the Federal Republic of Germany. It employs 380 people in Gottingen, primarily in the field of aeronautics research.

Related Links
German Aerospace Center
Aerospace News at

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Air China expects to post 'significant loss' for 2008
Shanghai (AFP) Jan 19, 2009
Flag carrier Air China said it expected to post a "significant loss" for last year due to shrinking passenger numbers and misjudged fuel hedging contracts.

  • China wary about the power of netizens in 2009: analysts
  • Autodesk exec Carol Bartz to become Yahoo! CEO: WSJ
  • Experience High-Speed Data Communications With ThurayaIP
  • New Yahoo! CEO a no-nonsense Silicon Valley veteran

  • Japan Resets H2A Launch To Jan 23
  • First ULA Delta IV Heavy NRO Mission Successfully Lifts Off From Cape Canaveral
  • New Skies NSS-9 Satellite Arrives In Kourou For February 12 Launch
  • Sea Launch Selected To Launch Intelsat 17

  • New Turbines Can Cut Fuel Consumption For Business Jets
  • Air China expects to post 'significant loss' for 2008
  • Nations demand climate plan from air, maritime industries
  • Heathrow expansion to get green light despite protests: reports

  • Australia Chips In A Spare Quarter For Boeing Wideband Global SATCOM Bird
  • Boeing Completes Critical Design Review For FAB-T Software-Defined Radio
  • Boeing Increases Capability Of On-Orbit US Navy Satellite
  • Boeing Develops Common Software To Reduce Risk For TSAT

  • Next Generation Cloaking Device Demonstrated
  • Raytheon Sensor Passes Space Simulation Test
  • Lockheed Martin Begins Key Test Of First SBIRS Geo Satellite With New Flight Software
  • Princeton Researchers Discover New Type Of Laser

  • Stevens New Director Of Communications And Public Outreach For Space Foundation
  • ATK Appoints Blake Larson To Lead Space Systems Group
  • Berndt Feuerbacher New President Of IAU
  • Orbital Appoints Frank Culbertson And Mark Pieczynski To Management

  • First Global Hawk Unmanned System For Environmental Science Research
  • Landmark Year Ahead For Earth Observation Science Missions
  • Satellite to keep eye on Ecuadoran turtle
  • Mapping In A One Meter Sea Level Rise

  • ecoRoute From Garmin Helps Lessen Carbon Footprint Of Cars
  • Real-Time Vehicle Recovery To Auto Dealers' Customers
  • Rand McNally Travel Guides Made Available On NAVIGON GPS Navigators
  • Samsungs Processor Powers Lowrance HDS Series Of GPS-Chartplotter And Fishfinder Systems

  • The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement