Summary and Key Points: National security analyst Steve Balestrieri evaluates the Saab 29 Tunnan, Sweden’s iconic 1950s jet fighter. Built by Saab based on research into German swept-wing designs, the “Flying Barrel” was the first European jet of its kind, rivaling the F-86 Sabre and MiG-15.
-This report analyzes its de Havilland Ghost (RM2) engine, its 20mm Hispano cannons, and its 1960s combat record with UN peacekeeping forces in the Congo.
Saab 29. Image Credit: Creative Commons.
Saab J-29 Tunnan. Image Credit: Creative Commons.
-Balestrieri explores how the Tunnan’s rugged, multi-role design philosophy directly informs the JAS 39 Gripen, providing a viable alternative to the F-35 for modern partner nations.
The Flying Barrel Legacy: Why the Saab 29 Tunnan is the DNA of Today’s JAS 39 Gripen
The Saab 29 Tunnan fighter jet, also known as the Flying Barrel, was introduced in 1951 and established Sweden’s successful jet fighter tradition. It was the first step in the design philosophy that eventually led to the JAS 39 Gripen.
JAS 39 Gripen. Image Credit: Creative Commons.
While the tubby, ugly Tunnan wasn’t much to look at, the designers at Saab continued to develop aircraft that now challenge the F-35 for sales. And it started with the Tunnan.
The Saab 29 was a highly successful and capable early jet fighter, praised for its surprising agility, speed, durability, and versatility as a fighter-bomber. It overcame the initial skepticism tied to its barrel-like appearance. It performed well in limited combat, set world speed records, and remained in service for decades.
The “Flying Barrel” Saw Combat In The Congo Crisis
The Saab 29 Tunnan saw limited but significant combat during the Congo Crisis (1960-1963) with Swedish UN forces. It carried out ground-attack and reconnaissance missions with success, including shooting down an enemy aircraft, with no recorded losses.
It proved highly maneuverable and effective, performing beyond its Cold War role as Sweden’s primary jet fighter.
Meet The Saab 29 “Flying Barrel”
The Swedish firm Saab used captured German documents from World War II to support its research on a new fighter jet in the early 1950s. Swedish defense manufacturers sought a new jet fighter capable of breaking the sound barrier without sacrificing maneuverability. And like the JAS 39 Gripen of today, the Saab 29 Tunnan was developed to wage war against the Soviet Union.
Saab J-29 Tunnan
Saab engineers implemented a 25-degree swept-wing configuration, which significantly improved high-speed performance and reduced drag as the aircraft approached Mach 1 speed.
It was the first swept-wing European fighter after World War II, putting it in the same category as the U.S. F-86 Sabre and the MiG-15.
The fuselage was rounded, which lent itself to the moniker, “flying barrel,” a nickname Saab was never thrilled with.
Saab 29 Tunnan’s Power Plant
In the early jet age, right after World War II, jet engines required a large internal volume for fuel and intake ducting; as a result, engineers had to make the fuselage as large as possible to accommodate the engines. That’s where the Tunnan’s tubby barrel shape came from.
The Saab 29 Tunnan’s engine was primarily the British de Havilland Ghost turbojet, built under license in Sweden by Svenska Flygmotor as the RM2. It provided about 5,000 lbs of thrust, which aided its impressive speed and climb.
This powerful engine enabled the Tunnan to exceed 1,000 kilometers per hour and to compete with other early jets. It was a fast interceptor and fighter-bomber. The top speed of the Saab 29 was 1,060 km/h, with a range of 1,100 km. Its service ceiling was 15,500 meters, and its rate of climb was 32.1 meters per second.
The Tunnan’s Looks Were Deceptive
Despite its unconventional beer-keg shape, the Tunnan was consistently praised for its excellent maneuverability, stability, and responsiveness. It was fast, agile, and had an outstanding turning radius.
The Saab 29 performed well in the harsh Nordic environment, and the Swedish government produced 660 of the aircraft for its air force.
Austria would become the only other operator, ordering a total of 30 J-29’s in 1961 and 1962. The Tunnan remained in service with the Austrian Air Force until 1972.
The Saab 29 Armaments
The Saab 29 was armed with four 20-mm Swedish Hispano Mk V cannons and was equipped with eight inner hardpoints for rocket/missile pylons, as well as two outer hardpoints for drop tanks or incendiary bombs.
It could carry up to 3,000 pounds of ordnance.
Baptism of Fire During the Congo Crisis
The Saab J29 saw service with United Nations peacekeeping forces in the former Belgian Congo from 1961 to 1964.
The action marked the only combat for the J29, and while the jungle terrain of Central Africa differed greatly from Scandinavia, the Flying Barrel was used effectively to strike at enemy ground targets, providing both cannon fire and rockets with no recorded losses.
The Tunnan also flew reconnaissance missions in support of the UN peacekeeping force.
Following UN operations, the aircraft deployed to Congo were scrapped rather than being relocated back to Sweden—they had already been replaced by more advanced fighters including the J32 Lansen and J35 Draken.
Saab SK 35C Draken (DragonKite) SE-DXP810.
Saab 35 Draken. Image Credit: Creative Commons.
Saab 35 Draken. Image Credit: Creative Commons.
The Tunnan’s distinctive barrel-shaped profile and record-setting performance made it an icon of early jet aviation. The Tunnan was an important aircraft in Sweden’s strategic development. It remains a symbol of Swedish engineering excellence and ambition.
The Saab 29 established Sweden’s reputation for advanced, agile, and rugged fighters, setting a design philosophy of high-performance, compact aircraft that directly influences the JAS 39 Gripen today.
Both aircraft prioritize superior maneuverability, short-field performance for road-base operations, and efficient, lightweight, multi-role capabilities.
Those capabilities have been a selling point to counter the massive F-35 sales to U.S. allies and partners.
About the Author: Steve Balestrieri
Steve Balestrieri is a National Security Columnist. He served as a US Army Special Forces NCO and Warrant Officer. In addition to writing on defense, he covers the NFL for PatsFans.com and is a member of the Pro Football Writers of America (PFWA). His work was regularly featured in many military publications
