Reaktionsmotor 12 (RM12) is a low-bypass afterburning turbofan jet engine developed for the Saab JAS 39 Gripen fighter. A version of the General Electric F404, the RM12 was produced by Volvo Aero (now GKN Aerospace Engine Systems).

The RM12 is a derivative of the successful F404 turbofan, developed originally by the U.S. Navy for its Boeing F/A-18 Hornet. GE and Volvo Aero Corporation have developed the RM12 to power the Saab/BAE Systems JAS39 Gripen, a multi-role fighter, attack and reconnaissance aircraft.

The result of the major redesign was RM12, an engine that met all mission requirements for Gripen, at a low lifecycle cost. RM12 also boasted of a relatively simpler design and lesser weight compared to its predecessor.

Partners include Volvo Aero, which builds the RM12 variant. The F404 was developed into the larger F414 turbofan, as well as the experimental GE36 civil propfan.

Volvo/GE RM12 Orientation Description. Advanced-technology, two-shaft, low-bypass-ratio, augmented turbofan engine in the 18,000- to 20,000-lbst (80- to 89-kN) class. Sponsor. The RM12 program has been sponsored by the government of Sweden through the Swedish Ministry of Defense and the Swedish Air Force. Power Class. 18,100 lbst (80.5 kN) with ...

Volvo Aero has also designed a new intake component for the RM12 that facilitates lower costs and increased availability. (Previously, the engine required inspection every 50 flight hours, now this is carried out during regular service.)

GE and Volvo Aero Corporation have developed simple, modular design is reliable and easy to maintain – the RM12 to power the Saab/BAE Systems JAS39 Gripen, key to high readiness and low cost of ownership.

At the major international aero engine conference ISABE 2011 in Gothenburg today, Volvo Aero will present a number of technical solutions to increase the thrust produced by the RM12 Gripen engine.

2006年11月14日 · Volvo Aero has delivered a number of post-certification enhancements to the RM12 twin turboshaft engine that powers the Saab Gripen. Some of these have been adopted …

Reaktionsmotor 12 (RM12) is a low-bypass afterburning turbofan jet engine developed for the Saab JAS 39 Gripen fighter. A version of the General Electric F404, the RM12 was produced by Volvo Aero (now GKN Aerospace Engine Systems).