Propulsion

New drive systems combining hydrogen fuel cells and distributed electric propulsion can be costly to develop.

Venus Aerospace’s team intentionally throttled the hydrogen peroxide monopropellant engine at 80% thrust to prevent the drone from reaching supersonic speed.

Validating the design of the fan blades is the overarching goal of a monthslong campaign at ONERA’s S1MA wind tunnel.

Boeing goes back to basics to transform retired MD-90 for future truss-braced wing test role.

Aviation Week forecasts Africa and the Middle East will have the most widebody engine MRO demand and Europe the most narrowbody engine demand in the period.

X-Bow received a $64 million contract from the Pentagon’s Industrial Base Policy office to expand manufacturing and lower production costs for SRMs.

Long-term pressure gain remains the goal, but compact combustion is accelerating near-term adoption of the technology for high-speed propulsion systems.

The EL-2 Goldfinch’s multiple electric propellers blow the wing to enable ultra-short takeoffs and landings.

For future surveillance satellites, the service seeks new thrusters and in-space refueling so it can “burn gas at will.”

Readers write about the U.S. Army FLRAA contest and fuel cell propulsion. Plus: Behind the Scenes: Aviation Week Events and Informa win awards.

Hydrogen propulsion in aviation faces significant technical and market challenges.

Spare engines have become a chokepoint for airlines due to delivery delays and longer periods out of service for older engines undergoing maintenance.

Ambitious large scale airframe modification programs will convert two A380s into flying technology testbeds for a hydrogen fuel cell, hydrogen combustion and an

Which engines and airlines will generate the most engine MRO demand in North America over the next decade.