It became the Swedish Air Force's first jet aircraft. In light of the extensive changes, rebuilt 21s were redesignated J 21R.

On 30 July 1943, the 21 performed its maiden flight and on 1 December 1945, the first examples of the J 21A-1 were introduced to service. It was quickly followed by the improved J 21A-2, which featured heavier armament, and the A 21A-3 fighter-bomber.

2020年4月2日 · UR SAMLINGARNA – Saab J 21R Utvecklingen mot snabbare flygplan tog ett rejält kliv framåt under andra världskriget med jetmotorn och Sveriges första jetflygplan Saab 21R levererades till...

In 1947 the J 21 evolved into de J 21R when it received the De Havilland Goblin jet engine, but as the J 29 Tunnan was introduced, it replaced the J 21 as the main fighter, performing the J 21 instead ground attack missions, thus designated A 21R.

2024年2月23日 · Fitted with a 1 X 20mm cannon and 4 x 13.2mm heavy machine guns, the J21R was ideal for engaging hostile land-based forces. Saab's first jet fighter pilots also had an advantage in lining up...

2018年2月12日 · The first Goblin II-powered prototype, designated the J21R, flew on March 10, 1947. Flight testing revealed a maximum speed of 496 mph, a cruising speed of 378 mph, a service ceiling of 39,350 feet and a range of 558 miles.

As a fighter, its service designation in the Swedish Air Force was J 21R, and saw service in the late 1940s. In early 1945, Saab launched a project to determine how to provide J21A with a jet engine to get the experience of jet engines and flying at high speeds.

2021年3月29日 · "The Saab J21 appeared at the end of World War 2 as a prop-driven fighter only to later become a fully jet-powered platform in the J21R."

2025年1月21日 · SAAB J21R The Saab 21R was a Swedish twin-boom fighter/attack aircraft made by Saab. It was a jet-powered development of the piston-engined Saab 21 which along with the Russian Yakovlev Yak-15 was one of the only two jet fighters successfully converted from a piston-powered aircraft to enter production.[1]

Jörgen Trued from SaabsUnited in the Airforce museumSAAB´s first jet powered plane