The SAAB 21 is a Swedish single-seat low-wing monoplane fighter and attack aircraft designed and manufactured by SAAB. Its twin boom fuselage with a pusher engine gave the aircraft an unusual appearance.

首批服役的戰鬥機被編號為j 21a-1，緊隨其後的是配備重型武器的j 21a-2，以及專職對地攻擊的a 21a-3。 鑒於噴射動力飛機在二戰后的普遍應用，紳寶亦按照瑞典空軍的興趣推出由 德哈維蘭 葛布林噴射發動機改裝而成的 薩博-21R 。

Saab-21： 研制国家：瑞典 Saab-21是在1939年萨伯公司应瑞典皇家空军的要求设计的一型活塞发动机推进的非常规战斗机。 由于萨伯公司在忙于生产轰炸机，再加上这种过于前卫的设计让瑞典皇家空军很难接受，直到1943年7月原型机才进行首飞，于1945年开始交付使用。

The SAAB 21 was a Swedish fighter/attack aircraft from SAAB that first took to the air in 1943. It was described as a very efficient weapons platform. It was designed as a twin boom pusher configuration, where the propeller is mounted in the rear …

因此萨伯 21 的军队型号为 J 21，其原型机共 3 架，三种生产型（J 21A-1 型、J 21A-2 型、A 21A-3 型）共生产了 298 架，服役时间从 1946 年到 1954 年。 投产的 J 21 使用德国戴姆勒·奔驰公司的 DB 605B 型 12 缸液冷活塞发动机，应用了萨伯公司设计师弗雷德·范斯托姆（Frid Wanstrom）提出的发动机后置、推进式螺旋桨、双尾梁布局。 设计时主要考虑这样的布局可以为飞行员提供良好的前向视野，同时机头有空间安装强大前向的火力——一门 20 毫米航炮和 2 …

2019年6月21日 · 正式生产的Saab-21有三种型号：使用西斯帕诺机炮的J-21A-1，54架；使用博福斯机炮、改进航电的J-21A-2，124架；能携带火箭弹的战斗轰炸型J-21A-3，119架。 这是架后来的Saab-21R，注意其机腹挂载的武器

Saab J 21A-3. A single-seat, single-engine airplane that later became one of the first-generation jet fighters. Its design is a twin-boom tail pusher configuration. It had two longitudinal booms, attached to the main wing but extending backwards from the middle section of each wing, with the main body placed in the middle. Similar to the ...

The unconventional twin-boom fighter J 21A made its first flying trials in July 1943. Negotiating with the German authorities had secured the license for the manufacturing of the Daimler-Benz DB 605 engine (1475 hp) in Sweden.

The Saab 21 is a single-engine single-seat fighter and ground-attack aircraft produced by the Swedish manufacturer Saab AB, Svenska Aeroplan Aktiebolaget. The fighter-version was designated J 21 by the Swedish Air Force (Flygvapnet), the attack-version as A 21.

When introduced into service in late 1945 as the J21A-1 the new type was the only pusher-engined fighter to become operational during World War II, being followed by the generally similar J21A-2 and, finally, by the A21A attack aircraft, these three versions being built to a total of 299 before production ended in 1948.