Supersonic plane. © Helix
Helix electric motors power Astro Mechanica’s proprietary dual-use propulsion system, Duality™, helping enable more affordable long-range supersonic flight.
Duality™ currently uses four Helix SPX242-94 motors. Each motor delivers up to 400 kW of peak power, 470 Nm of torque, and weighs just 31.3 kg.
For the fifth generation of Astro Mechanica’s engine, Helix will supply custom motors weighing 61.5 kg each. These motors will provide 900 kW of continuous power in both generator and propulsion modes and include a new isolation system designed for reliable operation at extreme altitudes.
Helix, the trading name of Integral Powertrain Ltd, is a UK-based manufacturer known for producing some of the world’s most power-dense electric motors and inverters. The company has partnered with California-based startup Astro Mechanica to support its adaptive engine concept.
The hybrid engine system. © Astro Mechanica
Astro Mechanica’s Duality™ propulsion system is designed to improve fuel efficiency, the largest cost challenge in supersonic flight. Combined with an advanced airframe, the engine could support near-term military and civilian uses such as defence, orbital launch, and long-range cargo transport.
Duality™ uses high-power electric motors to separate the propulsion system from the turboshaft core. A gas turbine generates electricity through two motors, which then power four Helix motors driving the fans and compressors.
This hybrid-electric design allows the engine to operate like a turbofan at subsonic speeds, a turbojet at lower supersonic speeds, and transition to a ramjet at very high supersonic speeds.
source Helix
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