This website uses cookies
More information
Marsh Brothers Aviation
Marsh Brothers Aviation
The monthly news publication for aviation professionals.
Related background information from the Handbook...


VoltAero Cassio

Emissions Reduction

BAN's World Gazetteer

The monthly news publication for aviation professionals.

Request your printed copy

Cassio power module tests ensure programme remains on time
The electric motors on the Cassio's power module will be used for low-noise takeoffs and landings, with the internal combustion engine serving as a range extender and for recharging the aircraft's batteries while aloft.
VoltAero hopes that the Cassio will be able to enter service in late 2022.

The power module for VoltAero's Cassio production aircraft is undergoing flight testing on the Cassio 1 testbed, marking another step in the company's development of a series production hybrid-electric aircraft family for regional transportation that will accommodate four to 10 seats, with flight ranges of up to 1,200 km and cruise speeds of 200 kts.

Cassio 1 made its maiden flight, equipped with the power module, on 11 October from VoltAero's Royan-Médis airport home base in southwest France, followed by two additional in-flight evaluations over the following two days.

The proprietary power module is installed in an aft-fuselage pusher position, and combines three 60 kw high-performance electric motors arranged in a triangular ‘barrel’ configuration, with a 370 hp internal combustion engine.

This configuration of the power module prefigures the full-up powertrain for VoltAero's largest production Cassio aircraft version, the 10-seat Cassio 600, which is to deliver a total hybrid-electric power of 600 Kw (800 hp), enabling the 200 kt cruise (360 km/hr). “The startup of power module flight testing represents a true milestone for hybrid-electric aviation, and it keeps us on track toward our goal of having initial Cassio production aircraft entering service during late 2022 or early 2023,” explains Jean Botti, VoltAero's CEO and chief technology officer.

In regular operation, the power module's electric motors will be used for low-noise takeoffs and landings, with the internal combustion engine serving as a range extender and for recharging the Cassio's batteries while aloft. With VoltAero's unique patented series/parallel hybrid design, the power module can operate in modes from full electric to full hybrid, depending on the customer mission profile and range requirement.

Additionally, as both the electric motors and internal combustion engine are linked to a common shaft that drives a five-blade pusher propeller, the ability for each to operate independently provides a high level of propulsion safety, with one source acting as a backup in case of a problem or failure of the other.

VoltAero technical director and test pilot Didier Esteyne, who was at the controls of Cassio 1 for the flight tests, said he was impressed by the power module's operation. “I felt very comfortable with its performance from the first takeoff,” he comments. “The power module provides a real propulsive 'kick,' and I look forward to opening the aircraft's flight envelope.”

Other News
Turbotech and Safran test first hydrogen turboprop for light aircraft
February 2, 2024
This successful test of a hydrogen-fuelled gas turbine engine is part of a project that leverages ArianeGroup’s decades-long experience with hydrogen propulsion for the Ariane rocket.
GAMA names 2024 Executive Committee
January 8, 2024
Ampaire’s EEL completes record 12 hour flight
December 14, 2023
EcoPulse demonstrator takes first hybrid-electric flight
December 7, 2023
EcoPulse took off from Tarbes airport for a test flight lasting 100 minutes, during which time the crew engaged the electric propellers and verified the proper functioning of the flight control computer and power systems.