Electra Develops Ultra-Short Takeoff Aircraft for U.S. Air Force

The U.S. Air Force (USAF) has signed a contract with Electra Aero to strengthen advanced air mobility markets through the development of hybrid-electric propulsion systems for electric ultra-short takeoff and landing (eSTOL) aircraft as part of its Agility Prime initiative. 

Leveraging distributed hybrid-electric propulsion and blown lift, Electra’s unique eSTOL aircraft takes off in less than 150 feet, whilst also offering nearly triple the payload capacity, an order of magnitude longer ranges, and less than half the operating costs of electric vertical takeoff and landing (eVTOL) alternatives.

“Electra is thrilled to be working in tandem with the U.S. Air Force and its innovative Agility Prime team to accelerate the tech transition of eSTOL into the commercial marketplace,” said Ben Marchionna, Electra’s Director of Technology & Innovation.

“These next-gen, low-carbon systems will solve several critical defense-related capability gaps while leveraging affordable commercial marketplace solutions.”

Hybrid-electric systems offer energy efficiency improvements. They also enable sustainable aviation at-scale and commercial advanced air mobility markets, for both vertical and ultra-short takeoff and landing aircraft.

“Agility Prime is excited to partner with Electra on their recent Phase II SBIR contract award,” said Agility Prime’s Deputy Lead, Major John ‘Wasp’ Tekell. 

“We look forward to exploring the unique capabilities of this design while continuing to accelerate the electric aviation industry.” 

Electra’s first propulsion system produces 150 kW (200 HP) of electrical power and comprises a small gas turbine and several custom components including a gearbox, generator, rectifier, control system, and software. 

Ground testing is planned this year followed by flight testing on the company’s technology demonstrator aircraft in 2022.

The aircraft can carry two people and take off and land in distances as short as 100 feet. It will use this hybrid-electric turbogenerator to power eight electric motors and charge a custom battery system during flight.

Electra’s first commercial product, with FAA certification planned in 2026, is designed to carry up to seven passengers and a pilot as far as 500 miles. It will serve urban and regional air mobility markets, sustainability-focused airline operations, ‘middle mile’ cargo logistics, and air ambulance services.