RED A03

A03
	RED A03 V-12 engine
Type	Aircraft diesel engine
National origin	Germany
Manufacturer	RED Aircraft GmbH
First run	2009

The RED A03 is a V12 four-stroke aircraft diesel engine designed and built by RED Aircraft GmbH of Adenau, Germany.^[1]

Development

In 2012, its unit cost was US$170,000.^[2] The engine received type approval from the European Aviation Safety Agency in December 2014 for use in any CS-23 aircraft in both normal and utility categories.^[1] It powered the Yakovlev Yak-152 trainer on its 29 September 2016 first flight.^[3] The RED A03 is presented by the ILA Berlin Air Show as an application in the aerobatic sector and for defence and security.^[4]

The engine is proposed for the Hybrid Air Vehicles HAV 304/Airlander 10, a British hybrid airship design, powered by four engines and can be operated with two.^[5] In November 2021, an Air Tractor AT-301 made a first flight retrofitted with a RED A03 engine.^[6] The same month, a prototype Otto Celera 500L powered by a RED A03 engine was flown using Sustainable Aviation Fuel.^[7] On 18 November 2022, Ampaire flew its Eco-Caravan maiden flight: the hybrid electric aircraft uses a RED A03 engine to reduce fuel consumption by 70% on shorter trips to 50% on longer ones, retaining the Grand Caravan payload capabilities with range improved to 1,100 nmi (2,000 km); supplemental type certificate (STC) is targeted for 2024.^[8]

As of March 2023, there were reliable reports of flight testing on a DHC-2 Beaver.^[9]^{[better source needed]}

Design

It has twin double overhead camshafts. A marine version was planned for 522 kW/700 hp at 3,900 rpm.^[10] The cylinder banks' angle is 80 degrees.^[11] The RED A03-200 series is a derivative developed for very high-altitude operation up to 15 km (49,000 ft), with a maximum rating of 460 hp (340 kW) at FL250.^[12]

Applications

Agricultural aircraft

Air Tractor AT-301 (STC planned)^[5]
Fletcher FU-24^[5]

Airship

Hybrid Air Vehicles HAV 304/Airlander 10 (proposed)^[13]

Utility aircraft

Ampaire Eco-Caravan (STC targeted for 2024).^[8]
De Havilland Canada DHC-2 Beaver (STC planned)^[5]
Junkers Ju 52NG
In-development twin-engine utility aircraft for 9-14 passengers or cargo from Russian Pro-Avia^[14]

Business aircraft

Otto Celera 500L (experimental)^[15]

Trainer aircraft

Yakovlev Yak-18^[16]
Yakovlev Yak-52 and Yakovlev Yak-152 trainers

Specifications

Data from EASA Type-Certificate Data Sheet^[1]

General characteristics

Type: 80° v-12 four-stroke compression-ignition piston engine
Bore: 86 mm (3.39 in)^[17]
Stroke: 88 mm (3.46 in)^[17]
Displacement: 374.3 cu in (6,134 cc)
Length: 1,100 mm (43 in)
Width: 850 mm (33 in)
Height: 750 mm (30 in)
Dry weight: 363 kg (800 lb) (RED A03-003/005), 357 kg (787 lb)(RED A03-102) dry

Components

Valvetrain: Gear-driven DOHC
Turbocharger: 2 intercooled
Fuel system: Common rail
Fuel type: jet-fuel, kerosene-type/diesel, SAF (certification in progres)
Oil system: Dry-sump, dual-circuit
Cooling system: Liquid, dual circuit
Reduction gear: 1:1.88
single lever FADEC/EECS

Performance

Power output: A03-003: 368kW (500 HP)Take-off at 2127 propeller rpm; 338kW (460 HP) maximum continuous at 1995 Propeller RPM, A03-005: 405 kW (550 hp)
Specific fuel consumption: 210 g/kWh (0.35 lb/(hp⋅h)) at 400 hp, 1862 prop. RPM, sea level^[17]

RED A05 300hp V6

The RED A05 is a 2017 preliminary design of a V6 engine with 3,550 cc (217 cu in) displacement, outputting 300 hp (220 kW) at takeoff at 2127 propeller RPM and 280 hp (210 kW) continuously at 1995 propeller RPM, with a 210 g/kWh (0.35 lb/(hp⋅h)) best brake specific fuel consumption.^[18]

References

^ ^a ^b ^c "E.150 – Type-Certificate Data Sheet – RED A03 series engines". European Aviation Safety Agency. 30 June 2022.
^ Niles, Russ (July 29, 2012). "500 Horsepower V-12 Turbo Diesel Engine From Germany". AV web.
^ Perry, Dominic (5 Oct 2016). "First flight for Yak-152 trainer". Flight Global.
^ "RED Aircraft GMBH". ILA Berlin Air Show. Archived from the original on 2020-10-30. Retrieved 2020-10-27.
^ ^a ^b ^c ^d "Fleet of RED A03 powered aircraft". RED Aircraft.
^ "Maiden Flight of Retrofit Air Tractor 301 with RED A03 Piston Engine" (Press release). RED Aircraft GmbH. 23 November 2021.
^ "RED A03 Sustainable Aviation Fuel Tests For Celera 500L by Otto Aviation" (Press release). RED Aircraft GmbH. 16 December 2021.
^ ^a ^b "Ampaire had the maiden flight with the RED A03 powered ECO-Caravan" (Press release). RED Aircraft. Nov 18, 2022.
^ "Primeiro voo bem sucedido do DHC-2 Beaver com motor V12 diesel". cavok.com.br (in Portuguese). 3 March 2023.
^ Henderson, Keith (March 31, 2011). "Lightweight 375 kW (500 hp) V12 Marine Diesel". Maritime propulsion. Maritime Activity Reports. Archived from the original on August 9, 2017. Retrieved August 9, 2017.
^ "The RED A03 Engine". RED Aircraft.
^ "A03-20x Series High Altitude". RED Aircraft.
^ "Airlander Hybrid Air Vehicles". RED Aircraft.
^ Kate Sarsfield (3 July 2020). "Pro-Avia selects Red A03 diesel engine to power in-development utility-twin". Flightglobal.
^ "Celera 500L Performance". Otto Aviation.
^ "yak 18". Flyer.
^ ^a ^b ^c "RED A03 - V12 - 6100cc / 374 cu in" (PDF). RED aircraft. Jul 2017. Archived from the original (PDF) on 2017-08-09. Retrieved 2017-08-09.
^ "RED A05 - V6 - 3550cc / 216 cu in" (PDF). RED aircraft. Jul 2017. Archived from the original (PDF) on 2017-08-09. Retrieved 2017-08-09.

External links

Official website

[tcds-1] "E.150 – Type-Certificate Data Sheet – RED A03 series engines". European Aviation Safety Agency. 30 June 2022.

[2] Niles, Russ (July 29, 2012). "500 Horsepower V-12 Turbo Diesel Engine From Germany". AV web.

[3] Perry, Dominic (5 Oct 2016). "First flight for Yak-152 trainer". Flight Global.

[4] "RED Aircraft GMBH". ILA Berlin Air Show. Archived from the original on 2020-10-30. Retrieved 2020-10-27.

[applications-5] "Fleet of RED A03 powered aircraft". RED Aircraft.

[6] "Maiden Flight of Retrofit Air Tractor 301 with RED A03 Piston Engine" (Press release). RED Aircraft GmbH. 23 November 2021.

[7] "RED A03 Sustainable Aviation Fuel Tests For Celera 500L by Otto Aviation" (Press release). RED Aircraft GmbH. 16 December 2021.

[RED18nov2022-8] "Ampaire had the maiden flight with the RED A03 powered ECO-Caravan" (Press release). RED Aircraft. Nov 18, 2022.

[9] "Primeiro voo bem sucedido do DHC-2 Beaver com motor V12 diesel". cavok.com.br (in Portuguese). 3 March 2023.

[maritimepropulsion-10] Henderson, Keith (March 31, 2011). "Lightweight 375 kW (500 hp) V12 Marine Diesel". Maritime propulsion. Maritime Activity Reports. Archived from the original on August 9, 2017. Retrieved August 9, 2017.

[11] "The RED A03 Engine". RED Aircraft.

[12] "A03-20x Series High Altitude". RED Aircraft.

[Airlander-13] "Airlander Hybrid Air Vehicles". RED Aircraft.

[14] Kate Sarsfield (3 July 2020). "Pro-Avia selects Red A03 diesel engine to power in-development utility-twin". Flightglobal.

[15] "Celera 500L Performance". Otto Aviation.

[16] "yak 18". Flyer.

[A03pdf-17] "RED A03 - V12 - 6100cc / 374 cu in" (PDF). RED aircraft. Jul 2017. Archived from the original (PDF) on 2017-08-09. Retrieved 2017-08-09.

[18] "RED A05 - V6 - 3550cc / 216 cu in" (PDF). RED aircraft. Jul 2017. Archived from the original (PDF) on 2017-08-09. Retrieved 2017-08-09.

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