Aerospace Testing InternationalAerospace Testing International
  • News
    • A-E
      • Acoustic & Vibration
      • Avionics
      • Data Acquisition
      • Defense
      • Drones & Air Taxis
      • Electric & Hybrid
      • EMC
      • Engine Testing
      • Environmental Testing
    • F-L
      • Fatigue Testing
      • Flight Testing
      • Helicopters & Rotorcraft
      • High Speed Imaging
      • Industry News
    • M-S
      • Materials Testing
      • NDT
      • Simulation & Training
      • Software
      • Space
      • Structural Testing
      • Supplier News
    • T-Z
      • Technology
      • Telemetry & Communications
      • Weapons Testing
      • Wind Tunnels
  • Features
  • Magazines
    • March 2025
    • Dec 2024/Jan 2025
    • Showcase 2025
    • September 2024
    • June 2024
    • Archive Issues
    • Subscribe Free!
  • Opinion
  • Webinars
  • Events
    • All Events
    • Aerospace Test & Development Show
  • Podcasts
  • Videos
  • Suppliers
    • Supplier Spotlights
    • Press Releases
    • Technical Papers
  • Jobs
    • Browse Jobs
    • Post a Job – It’s FREE!
    • Manage Jobs (Employers)
LinkedIn YouTube X (Twitter)
LinkedIn YouTube X (Twitter)
Subscribe to magazine Subscribe to email newsletter Media Pack
Aerospace Testing InternationalAerospace Testing International
  • News
      • Acoustic & Vibration
      • Avionics
      • Data Acquisition
      • Defense
      • Drones & Air Taxis
      • Electric & Hybrid
      • EMC
      • Engine Testing
      • Environmental Testing
      • Fatigue Testing
      • Flight Testing
      • Helicopters & Rotorcraft
      • High Speed Imaging
      • Industry News
      • Materials Testing
      • NDT
      • Simulation & Training
      • Software
      • Space
      • Structural Testing
      • Supplier News
      • Technology
      • Telemetry & Communications
      • Weapons Testing
      • Wind Tunnels
  • Features
  • Magazines
    1. March 2025
    2. Dec 2024/Jan 2025
    3. Showcase 2025
    4. September 2024
    5. June 2024
    6. March 2024
    7. Archive Issues
    8. Subscribe Free!
    Featured
    19th March 2025

    In this issue: March 2025

    Online Magazines By Ben Sampson
    Recent

    In this issue: March 2025

    19th March 2025
    contents and front cover of magazine

    In this issue: December / January 2025

    19th December 2024
    Showcase 2025

    In this issue – Showcase 2025

    6th November 2024
  • Opinion
  • Webinars
  • Events
    • All Events
    • Aerospace Test & Development Show
  • Podcasts
  • Videos
  • Suppliers
    • Supplier Spotlights
    • Press Releases
    • Technical Papers
  • Jobs
    • Browse Jobs
    • Post a Job – It’s FREE!
    • Manage Jobs (Employers)
LinkedIn YouTube X (Twitter)
Aerospace Testing InternationalAerospace Testing International
Drones & Air Taxis Electric & Hybrid

Rolls-Royce tests hybrid aero propulsion system

Ben SampsonBy Ben Sampson16th March 20193 Mins Read
Share LinkedIn Twitter Facebook Email
Rolls evtol

Rolls-Royce has successfully ground tested a hybrid-electric propulsion system suitable for use in air taxis, general aviation aircraft and helicopters in Indianapolis, USA.

A hybrid version of the M250 gas turbine, an engine that has been used in more than 170 different aircraft, was tested in three modes: series hybrid, parallel hybrid and turbo-electric.

The M250 hybrid is planned to be used as a propulsion plant with power ranging from 500kW to 1MW  across a range of  platforms to enable distributed electric propulsion, including eVTOLs (electric vertical take-off and landing vehicles)

Rolls-Royce plans to run experimental test flights with the engine installed on aircraft in 2021.

Dr Mike Mekhiche, deputy director, Rolls-Royce Electrical said, “The successful testing of the hybrid M250 system is an important step forward in providing a hybrid-electric propulsion system that will enable a new class of quieter and cleaner air transport.”

During the tests, each component and sub-system of the hybrid engine was individually tested for electrical performance. The tests included simulating use across take-off, cruise, landing and taxiing and confirmed the system’s suitability for a range of transport platforms including aircraft with a range of up to 1000 miles (1600km)  and weighing up to 2000kg (4,400 lb), which would support the Rolls-Royce eVTOL concept unveiled at the Farnborough Air Show last year..

The Rolls-Royce hybrid electric propulsion system demonstrator integrates a M250 gas turbine engine with a high energy density battery system, electric generators, power converters and an advanced power management and control system. The power management system optimizes overall propulsion performance in order for the system to be suitable across different platforms, while delivering efficiency gains, reducing noise and lowering emissions.

The hybrid electric propulsion system was set up in the following configurations:

Series Hybrid: In this configuration, the engine operates as a turbo-generator that charges an on-board battery system, and does not contribute to thrust directly. All power required for thrust and other onboard systems is supplied by the battery.

Parallel Hybrid: In this configuration, the platform thrust is supplied by a combination of the engine (mechanical thrust) and the electrical system (electrical thrust), while the other power needs of the aircraft are met by the battery.

Turbo-Electric mode: In this configuration, the battery system is redundant. The engine operates as a pure turbo-generator supplying electric power for thrust and any other power needs on the aircraft.

According to Rolls-Royce the M250 hybrid power pack complements the 2.5MW system being developed for larger aircraft, including regional aviation, and is being tested with Airbus on the E-Fan X demonstrator platform.

Rolls-Royce said it selected the M250 for the tests because of its maturity, power-density, ease of maintenance, and high reliability. In the past half-century, M250 variants have logged more than 250 million flight hours and nearly 33,000 M250 engines have been delivered to customers.

 

Read our Q&A with Dr Rob Watson, Rolls-Royce’s head of electrical,  on the main technical barriers to electric-hybrid propulsion for aircraft and the company’s approach to hybrid-electric development work.

Share. Twitter LinkedIn Facebook Email
Previous ArticleAerospace firsts – Question 9
Next Article How software can help aerospace engineers capitalize on industry trends and opportunities
Ben Sampson

Ben has worked as a journalist and editor, covering technology, engineering and industry for the last 20 years. Initially writing about subjects from nuclear submarines to autonomous cars to future design and manufacturing technologies, he was editor of a leading UK-based engineering magazine before becoming editor of Aerospace Testing in 2017.

Related Posts

Drones & Air Taxis

Wisk and NASA to partner on US autonomous flight operations and standards

20th May 20252 Mins Read
Drones & Air Taxis

Cranfield team advances in global eVTOL challenge

19th May 20253 Mins Read
Drones & Air Taxis

ANRA receives first U-space service provider certificate

15th May 20253 Mins Read
Latest Posts

Industry Adoption of 3D Optical Surface Gauges

21st May 2025

NDT: Robotics and software spur innovation

21st May 2025

Wisk and NASA to partner on US autonomous flight operations and standards

20th May 2025
Supplier Spotlights
Our Social Channels
  • Twitter
  • YouTube
  • LinkedIn
Getting in Touch
  • Subscribe To Magazine
  • Contact Us
  • Meet the Team
  • Media Pack
Related Topics
  • Aircraft Interiors
  • Business Jet Interiors
FREE WEEKLY NEWS EMAIL!

Get the 'best of the week' from this website direct to your inbox every Wednesday

© 2023 Mark Allen Group Ltd | All Rights Reserved
  • Cookie Policy
  • Privacy Policy
  • Terms & Conditions

Type above and press Enter to search. Press Esc to cancel.