Electra has recently demonstrated the capabilities of its hybrid-electric Short Takeoff and Landing (eSTOL) Ultra Short prototype aircraft to the US Military. This innovative aircraft is designed to take off and land in areas without fully developed airfields, making it ideal for operations in remote or disaster-affected regions. During the demonstration, the Ultra Short aircraft showcased its ability to function in environments typically reserved for helicopters, but with greater efficiency and lower operational costs.
The need for ultra short takeoff aircraft
The importance of aircraft capable of taking off and landing in constrained areas has been highlighted by events such as Hurricane Helene, which devastated parts of North Carolina and cut off access to several regions. In such situations, traditional aircraft may be unable to operate due to the lack of proper airfields. The Ultra Short addresses this challenge by being able to operate from small, unprepared areas such as fields, pastures, or even football grounds. The aircraft’s ability to take off on runways as short as 300 x 100 ft (91 x 30 m) makes it a versatile tool for military and humanitarian missions.
Design and features
At first glance, the Ultra Short resembles a conventional private plane, featuring a top-mounted wing. However, the large flaps on its wings and its eight electric motors make it stand out. These motors are strategically mounted to concentrate airflow over the wings, providing the necessary lift for takeoff in short distances.
One of the key innovations Electra has introduced with the Ultra Short is its hybrid-electric propulsion system. Unlike conventional aircraft that rely solely on jet fuel or batteries, this aircraft uses a combination of a lithium battery and a turbine generator. This configuration allows the Ultra Short to achieve greater range and efficiency than pure electric aircraft. With a cruising speed of around 200 mph (322 km/h) and a range of approximately 500 miles (805 km), it also carries a 45-minute fuel reserve, making it suitable for extended missions. Importantly, it can carry out helicopter-like operations with only a third of the fuel consumption.
Military demonstrations and applications
In its recent demonstration flights, conducted by Electra Chief Test Pilot Cody Allee, the Ultra Short performed a series of takeoffs and landings from grass fields at Marine Corps Air Facility Quantico and Felker Army Airfield at Joint Base Langley-Eustis in Virginia. The aircraft demonstrated tight, 150-ft (46-m) turns at low speeds and altitudes, which are critical capabilities for military operations where survivability and agility are key factors.
A particularly notable aspect of the demonstration was how the Ultra Short was used as a mobile power station. The aircraft powered all pre-flight presentation equipment and sound systems directly from its onboard system. According to Electra, this system can provide over 600 kW of continuous power and more than 1 MW for short bursts, further enhancing its potential utility in field operations where external power sources might not be available.
Future implications
The potential of Electra’s Ultra Short aircraft extends beyond military use. Its ability to operate from austere locations and provide a mobile power source could be beneficial in disaster relief efforts, remote medical missions, and supply drops in hard-to-reach areas. The aircraft’s design allows it to deliver capabilities that are typically only possible with helicopters, but with a 70% reduction in operating costs and significantly quieter operation.
Commenting on the success of the demonstration, JP Stewart, Electra’s Vice President and General Manager, said, “These flight demonstrations mark a significant milestone for Electra as we show the capabilities of the technology in the real-world. Our Ultra Short aircraft make it possible to operate from austere locations previously only reachable by helicopters, with 70% lower costs and very quiet operations. We’re excited to collaborate with our government partners to deliver a new level of capability and operational energy efficiency that aligns with the future of defense logistics and mobility.”
Source: Electra
