Axe by Skyfly

Estimated delivery: Summer 2024

100 – 200 miles

Range (Electric-Hybrid)

100 mph

cruise speed

2 pax

passengers

8 x 35KW

power source

700 kg

max thrust

172 kg

payload

Base Price

Aircraft Options

Factory Assisted Build (£20,000+VAT)

Range Extender Generator (£50,000+VAT)

Additional battery pack (£25,000+VAT)

Ballistic Parachute (£20,000+VAT)

Propulsion

The Axe features 8 brushless motors with 2 per wing end. The two motors are in a single housing and both power single shaft allowing for redundancy in the motor unit. The duplex motor will produce 70 KW peak power, 50kw continuous power with a max thurst available of around 700 kg (1,400 lbs).

Advanced Flight Control System

The Axe flight control system is powered by the Veronte 4x from Embention. The Veronte 4x has been designed to have quadruple redundancy and the whole architecture is designed to avoid any single point of failure. The system has a proven track record within manned applications for electric vertical lift aircraft.

Hybrid generator

Working with Rotron the Axe features an optional hybrid generator system to extend the range of the aircraft by charging the batteries as the aircraft flies. The Rotron rotary engine delivers an efficient and reliable solution. The hybrid unit will increase endurance by up to 2 hours providing 50kw of continuous power with only a 55kg all-up weight penalty.

 

Battery Technology

The Axe high power Lithium batteries will feature both a solid state battery system and also a removable battery pack allowing the aircraft to continue flying without waiting for charging. The battery system has multiple redundancies allowing for continued flight in the event of a battery failure. We are still in discussions with multiple suppliers and batteries are the main component that is susceptible to change as technology is progressing rapidly in this space. 

Propulsion

The Axe features 8 brushless motors with 2 per wing end. The two motors are in a single housing and both power single shaft allowing for redundancy in the motor unit. The duplex motor will produce 70 KW peak power, 50kw continuous power with a max thurst available of around 700 kg (1,400 lbs).

Advanced Flight Control System

The Axe flight control system is powered by the Veronte 4x from Embention. The Veronte 4x has been designed to have quadruple redundancy and the whole architecture is designed to avoid any single point of failure. The system has a proven track record within manned applications for electric vertical lift aircraft.

Hybrid Power Plant

Working with Rotron we have designed a custom hybrid generator system to extend the range of the aircraft. The Rotron rotary engine delivers an efficient and reliable solution. The hybrid unit will increase endurance by up to 2 hours providing 50kw of continuous power with only a 55kg all-up weight penalty.

 

Battery Technology

The Axe high power Lithium batteries will be removable allowing the aircraft to continue flying without waiting for charging. The battery system has multiple redundancies allowing for continued flight in the event of a battery failure. We are still in discussions with multiple suppliers and batteries are the main component that is susceptible to change. 

Technical Specifications

 

Canard span 5m Canard (chord 0.8m)
Wingspan 5m Wing (chord 1.2m)
Maximum All Up Weight 600kg
Empty weight 182kg  (equipped for flight less batteries and occupants)
Crew weight 172kg (2 pax)
Installed power 8 x 35kw motors = 280kw peak
Batteries 246kg = 48kwh
Hybrid setup

117kg batteries/fuel

55kg hybrid power plant

Rotor diameter 4 x 1.5m (3 bladed fixed pitch)
Rotor Angle Fixed
Hover Power Required 140kw
Undercarriage Tricycle (conventional fixed wing)
Stall Speed 48mph
Power off sink rate 570fpm at 70mph
Best Glide Angle 9:1
Climb 2300fpm at 70mph
Runway Length Required

0m – VTOL (vertical take-off and landing)

50m – STOL (short take-off and landing)

300m – Glide and power off landing

 

Disclaimer: Commercial terms not formally agreed with our suppliers. We are always looking for the best in class components and therefore pricing and specifications can change accordingly. Prices are subject to adjustment to fall in line with inflation.

Take-off today

Kent Test Facility:

Mount Offham

Teston Road

Offham

Kent

ME19 5PG

London HQ:

Unit 17

91 Peterborough Road

Fulham

London

SW6 3BU

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