The RED A03 is a V12 four-stroke

aircraft diesel engine An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. ...

designed and built by RED Aircraft GmbH of

Adenau Adenau () is a town in the High Eifel in Germany. It is known as the ''Johanniterstadt'' because the Order of Saint John was based there in the Middle Ages. The town's coat of arms combines the black cross of the Electorate of Cologne with the l ...

, Germany.

Development

In 2012, its unit cost was . The engine received type approval from the

European Aviation Safety Agency The European Union Aviation Safety Agency (EASA) is an agency of the European Union (EU) with responsibility for civil aviation safety. It carries out certification, regulation and standardisation and also performs investigation and monito ...

in December 2014 for use in any CS-23 aircraft in both normal and utility categories. It powered the

Yakovlev Yak-152 The Yakovlev Yak-152 is a Russian primary trainer aircraft from the Yakovlev Design Bureau, part of the Irkut Corporation. The prototype Yak-152 first flew on 29 September 2016, powered by a RED A03 diesel engine, rated at . The aircraft has ...

trainer on its 29 September 2016 first flight. The RED A03 is presented by the

ILA Berlin Air Show The ILA Berlin Air Show (German: Internationale Luft- und Raumfahrtausstellung (ILA)) combines a major trade exhibition for the aerospace and defence industries with a public airshow. It is held every even year at the new Berlin ExpoCenter Airp ...

as an application in the Aerobatic sector and for Defence and Security. The engine is proposed for the

Hybrid Air Vehicles HAV 304/Airlander 10 The Hybrid Air Vehicles Airlander 10, originally developed as the HAV 304, is a hybrid airship designed and built by British manufacturer Hybrid Air Vehicles (HAV). Comprising a helium airship with auxiliary wing and tail surfaces, it flies usi ...

, a British hybrid airship design, powered by four engines and can be operated with two. In November 2021, an Air Tractor AT-301 made a first flight retrofitted with a RED A03 engine. The same month, a prototype

Otto Celera 500L The Otto Celera 500L is a business and utility light aircraft developed by American startup, Otto Aviation. By August 2020, 31 test flights had been flown, as introduction is targeted for 2023–2025. It has a single RED A03 diesel piston en ...

Sustainable Aviation Fuel An aviation biofuel or bio-jet fuel Note: About">Investable Universe>About' or bio-aviation fuel (BAF) is a biofuel used to power aircraft and is said to be a sustainable aviation fuel (SAF). The International Air Transport Association (IATA) co ...

. On 18 November 2022, Ampaire flew its Eco- Caravan maiden flight : the

hybrid electric aircraft A hybrid electric aircraft is an aircraft with a hybrid electric powertrain. As the energy density of lithium-ion batteries is much lower than aviation fuel, a hybrid electric powertrain may effectively increase flight range compared to pure electr ...

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 ; supplemental type certificate (STC) is targeted for 2024.

Design

It has twin

double overhead camshaft An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...

s. A marine version was planned for 522 kW/700 hp at 3,900 rpm. The cylinder banks' angle is 80 degrees. The RED A03-200 series is a derivative developed for very high-altitude operation up to , with a maximum rating of at FL250.

Applications

; Agricultural aircraft * Air Tractor AT-301 ( STC planned) *

Fletcher FU-24 The Fletcher FU-24 is an agricultural aircraft made in New Zealand. One of the first aircraft designed for aerial topdressing, the Fletcher has also been used for other aerial applications as a utility aircraft, and for sky diving. Design and ...

; Airship *

(proposed) ; Utility aircraft * Ampaire Eco-Caravan (STC targeted for 2024). *

De Havilland Canada DHC-2 Beaver The de Havilland Canada DHC-2 Beaver is a single-engined high-wing propeller-driven short takeoff and landing (STOL) aircraft developed and manufactured by de Havilland Canada. It has been primarily operated as a bush plane and has been use ...

(STC planned) * Junkers JU-52NG * In-development twin-engine

utility aircraft A utility aircraft is a general-purpose light airplane or helicopter, usually used for transporting people, freight or other supplies, but is also used for other duties when more specialized aircraft are not required or available. The term can a ...

for 9-14 passengers or cargo from Russian Pro-Avia ; Business aircraft *

(experimental) ; Trainer aircraft *

Yakovlev Yak-18 The Yakovlev Yak-18 (russian: Яковлев Як-18; NATO reporting name Max) is a tandem two-seat military primary trainer aircraft manufactured in the Soviet Union. Originally powered by one 119 kW (160 hp) Shvetsov M-11FR-1 radial p ...

Yakovlev Yak-52 The Yakovlev Yak-52 (russian: Яковлев Як-52) is a Soviet primary trainer aircraft which first flew in 1976. It was produced in Romania from 1977 to 1998 by Aerostar, as ''Iak-52'', which gained manufacturing rights under agreement wit ...

and

trainers

Specifications

RED A05 300hp V6

The RED A05 is a 2017 preliminary design of a V6 engine with displacement, outputting at takeoff at 2127 propeller RPM and continuously at 1995 propeller RPM, with a best

brake specific fuel consumption Brake-specific fuel consumption (BSFC) is a measure of the fuel efficiency of any prime mover that burns fuel and produces rotational, or shaft power. It is typically used for comparing the efficiency of internal combustion engines with a shaft out ...

References

External links

*{{official website, 1=https://red-aircraft.com Aircraft diesel engines 2000s aircraft piston engines