The Helix supersonic jet engines partnership with Astro Mechanica marks a major step toward long-range, efficient supersonic travel. Their combined work supports a new adaptive propulsion system targeting both military and civilian use.
Adaptive Power for Future Flight
The Duality system relies on power-dense electric motors to improve fuel efficiency, a key barrier for supersonic aircraft. Four Helix SPX242-94 motors currently support the prototype design.
How the Hybrid System Works
This architecture separates the propulsion unit from the turboshaft core. A gas turbine drives two motors that generate electricity for the four propulsor motors.
Multi-Mode Performance
The setup mimics a turbofan at subsonic speeds and transitions to a turbojet at early supersonic stages. At higher speeds, the system behaves like a ramjet for efficient Mach 3+ flight.
Power Delivery and Efficiency
This combined-cycle design allows smooth changes between flight profiles. It supports efficient thrust from takeoff through extreme supersonic operation.
Engine Specs and Power Output
The current Helix SPX242-94 units provide 400kW of peak power and 470Nm of torque. They weigh only 31.3kg each and offer strong continuous performance at 300kW.
Next-Generation Motor Development
Helix is creating custom motors for the fifth-generation Duality system. Each unit will deliver 900kW of continuous output for generator or propulsion roles.
Performance and Propulsion Capability
The upcoming motors target 950kW peak power at up to 20,000rpm and 575Nm of torque. A new isolation system supports operation at extreme altitudes.
Technology Behind the Density
Helix radial flux motors provide exceptional power density. Their efficiency is essential for Duality’s multi-stage performance and Mach 3+ potential.
Progress Toward First Flight
Astro Mechanica is testing its fourth-generation prototype now. The team plans first flight within three years as development continues.
Future Vision and Applications
The company aims to make supersonic transport more accessible over the next decade. The design also supports national defense and advanced launch systems.
Summary
Helix supersonic jet engines now anchor a new adaptive propulsion concept with broad potential. Their power density and efficiency help drive the Duality system toward practical, long-range supersonic flight.
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Source: Helix
