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Technology Highlights Of 2021

Graham Warwick December 17, 2021
EHang VT-30 winged autonomous air taxi

EHang Takes Wing With VT-30

Credit: EHang

China’s EHang took the wraps off its VT-30 winged, longer-range autonomous air taxi in May, following initial hover flight tests. The two-seat VT-30 has a lift-plus-cruise electric vertical-takeoff-and-landing configuration and a range of 300 km (185 mi.) versus 35 km for EHang’s multicopter EH216.

EMB-203 Ipanema agricultural aircraft

Embraer Tests Electric Ipanema

Credit: Embraer

Embraer began flight tests of an electric propulsion demonstrator, a modified EMB-203 Ipanema agricultural aircraft, in August. The piloted demonstrator was developed under a joint effort with Brazilian electrical engineering company WEG and Portugal-headquartered energy multinational EDP.

Ampaire Electric EEL hybrid-electric propulsion testbed

Hybrid Trials in the UK

Credit: Ampaire

Ampaire in August conducted trial flights of its Electric EEL hybrid-electric propulsion testbed on regional routes in Orkney, Scotland, and Southwest England under UK government-funded projects. The startup is now converting the Cessna Caravan to hybrid-electric propulsion for U.S. regional airline Surf Air Mobility.

Honda eVTOL

Honda Enters eVTOL Race

Credit: Honda R&D

Automaker Honda in September announced plans to develop a hybrid-electric vertical-takeoff-and-landing air taxi. A demonstrator is planned to fly in the U.S. in 2025, when a decision is expected on whether to proceed with certification and launch of a Honda-branded air mobility service in 2030.

CycloTech subscale demonstrator with cyclorotor electric propulsion

Hovering on Cycloidal Rotors

Credit: CycloTech

Austria’s CycloTech in October conducted initial hover flight tests of a subscale demonstrator with its cyclorotor electric propulsion system. The cylindrical rotor produces thrust at 90 deg. to its rotational axis and provides instantaneous control of the magnitude and direction of thrust through 360 deg.

aircraft with modular hybrid-electric propulsion architecture

Europe Demos Hybrid Architecture

Credit: Mahepa

Europe’s Mahepa project to demonstrate a modular hybrid-electric propulsion architecture wrapped in October with tests in a second four-seat aircraft. After flights of a hydrogen fuel-cell version in the H2Fly Hy4, a Pipistrel Panthera flew with a hybrid-electric powertrain based on an internal-combustion engine.

Diamond Aircraft all-electric training aircraft

Diamond Debuts Electric Trainer

Credit: Diamond Aircraft concept

Austria’s Diamond Aircraft in October partnered with battery supplier Electric Power Systems to develop an all-electric training aircraft named the eDA40. The two-seat aircraft is scheduled to fly in the second quarter of 2022 and European CS-23 certification is expected in 2023.

Autoflight V1500M three-/four-passenger electric vertical-takeoff-and-landing air taxi

Autoflight Joins China’s UAM Drive

Credit: Autoflight

Barely a month after completing a $100 million fundraising round, Chinese startup Autoflight in October flew a prototype of its V1500M three-/four-passenger electric vertical-takeoff-and-landing air taxi. The Shanghai-based company is aiming for certification by 2024.

Rolls-Royce Spirit of Innovation electric aircraft

Rolls-Royce Accelerates Electric

Credit: Rolls-Royce

Rolls-Royce claimed a series of world records on Nov. 16 when its Spirit of Innovation electric aircraft achieved a speed of 555.9 kph (345.4 mph) over 3 km (1.86 mi.), exceeding the existing record by 213.04 kph. The aircraft reached a maximum 623 kph, achieved 532.1 kph over 15 km and climbed to 3,000 m (9,800 ft.) in 202 sec.

Eviation Alice all-electric regional aircraft

Electric Alice Rolls Out

Credit: Eviation Aircraft

Eviation rolled out its redesigned prototype Alice all-electric regional aircraft at Arlington, Washington, in early December. The 16,500-lb.-gross-weight nine-passenger aircraft is planned to fly by year-end, powered by two 650-kW MagniX Magni650 electric engines. Deliveries are planned to begin in 2026.

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Electric aircraft propulsion and advanced air mobility moved at a brisk pace through 2021, with more companies embracing the technology. Here are some of the year’s key milestones.

Graham Warwick

Graham leads Aviation Week's coverage of technology, focusing on engineering and technology across the aerospace industry, with a special focus on identifying technologies of strategic importance to aviation, aerospace and defense.

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