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Saab 29 Tunnan

Saab · Fighter / Attack · Sweden · Early Jet (1946–1969)

The Saab 29 Tunnan ('Barrel' in Swedish, after its rotund fuselage) was a single-engine, single-seat subsonic jet fighter developed by Saab AB and built from 1948 to 1956. First flown in September 1948, it entered Flygvapnet (Swedish Air Force) service in 1951 as Sweden's first front-line swept-wing jet — and one of the earliest such fighters fielded in post-war Europe. The Tunnan carried Sweden across the threshold from piston-engine types like the Saab 21 and Saab 21R into the jet age, and it founded the Saab fighter lineage that would later yield the Lansen, Draken, Viggen and Gripen. Production at Saab's Linköping plant ran to 661 airframes before closing in 1956. Sweden and Austria were the only operators; Sweden retired its last Tunnan in 1976, Austria in 1972.

Dimensions ran to roughly 33 ft (10.1 m) in length and a 36-ft (11.0 m) wingspan, with an empty weight near 9,920 lb and a maximum take-off weight of 17,650 lb. Power came from a single Svenska Flygmotor De Havilland Ghost 50 — a Swedish-licensed De Havilland Ghost — a centrifugal-flow turbojet rated around 5,000 lbf, modest by later standards but typical of the early jet era. Top speed reached 658 mph (Mach 0.86), service ceiling 50,820 ft, and combat radius about 580 nmi with external fuel. The 25° wing sweep was unusual for the late 1940s, and the deep, circular fuselage gave the type its 'flying barrel' reputation among pilots. Armament comprised four 20mm M/45 cannons under the fuselage and eight external hardpoints for Rb 24 air-to-air missiles, conventional bombs, rockets and other stores. On 6 May 1954, John 'Brushy' Hjelm flew a Tunnan to a world speed record for production jets over a closed-circuit course at an average of 607 mph.

Tunnan variants spanned the type's service life. The J 29A 'Adam' (from 1951) was the original fighter. The J 29B 'Bertil' (1953) added internal fuel. The S 29C 'Caesar' was the photo-reconnaissance version, while the J 29E 'Erik' introduced aerodynamic refinements. The definitive variant, the J 29F 'Filip', combined fighter and ground-attack roles and carried the Rb 24 missile. Swedish J 29B and S 29C airframes saw combat with the United Nations during the Congo Crisis under ONUC from 1961 to 1964 — a rare instance of Swedish military aircraft deployed in combat outside national defence.

For Kids — a shorter, friendlier version

The Saab 29 Tunnan is Sweden's first swept-wing jet fighter. The name 'Tunnan' means 'Barrel' in Swedish, after the plane's round, fat body. The Tunnan first flew in 1948 and entered service in 1951. It was a successful fighter that flew with Sweden and Austria.

The Tunnan has one de Havilland Ghost jet engine making 5,000 pounds of thrust. Top speed is 658 mph, faster than most race cars. The plane is 34 feet long with a 36-foot wingspan, about the length of a school bus. It carries four 20 mm cannons in the nose plus rockets and bombs under the wings.

The Tunnan looks like a big chubby barrel from the side, hence its nickname. Despite the funny shape, it was a top fighter in the early 1950s, faster than most other Western jets. In 1954, a Swedish pilot named Hans Neij set a world speed record for piston or jet flight on a closed course at 977 km/h (607 mph) in a Tunnan.

About 661 Tunnans were built between 1950 and 1956. Sweden flew them until 1976. Austria also bought 30 Tunnans, retiring them in 1972. A few Tunnans were used by Swedish forces with the United Nations in the Congo crisis of the early 1960s. Today some Tunnans are preserved in Swedish museums.

Fun Facts

The name 'Tunnan' means 'Barrel' in Swedish, named after the plane's round body.
Top speed is 658 mph, faster than most race cars.
The Tunnan set a 1954 world speed record at 977 km/h on a closed course.
About 661 Tunnans were built between 1950 and 1956.
Austria also bought 30 Tunnans and retired them in 1972.
Tunnans flew with UN forces in the Congo crisis of the early 1960s.
Saab built the Tunnan in just 4 years from start of design to first delivery.

Kids’ Questions

Why the chubby shape?

The Tunnan's body is fat because the early jet engine inside was large and round, and Saab built the body around it. Many early jets had this barrel shape because engines were big. Newer jets have slimmer bodies because engines became smaller. The Tunnan's nickname stuck because the shape was so unusual.

Why did Austria buy them?

Austria needed a modern jet fighter in the 1960s but was a neutral country (not in NATO or the Warsaw Pact). Sweden was also neutral, so Austria felt safe buying Tunnans from Sweden. The two neutral countries supported each other this way. Austria flew Tunnans until 1972, then replaced them with Saab 105 trainers.

Is any still flying?

Yes, one Tunnan still flies today as a Swedish Air Force historic flight aircraft. It performs at airshows in Sweden each summer. Other Tunnans are preserved in museums, including the Swedish Air Force Museum at Linköping. The flying Tunnan is one of the oldest jet fighters still in flying condition.

Variants

J 29A 'Adam' (initial 1951): Original 1951 fighter variant; 224 produced. Backbone of Sweden's first jet-fighter generation.
J 29B 'Bertil' (1953): Improved variant with greater internal fuel capacity and updated systems; 332 produced — the largest single-variant production run.
S 29C 'Caesar' (1954): Photo-reconnaissance variant; 76 produced. Flew Swedish reconnaissance sorties and the UN Congo deployment.
J 29E 'Erik' (1955): Aerodynamic-refinement variant; 29 produced.
J 29F 'Filip' (1955+): Definitive upgrade combining fighter and ground-attack roles; 308 J 29B / J 29E airframes brought up to F standard. Flew UN ONUC combat sorties in Congo 1961-1964.
Saab 29 Austrian export: Refurbished ex-Swedish Tunnan delivered to the Austrian Air Force; 30 aircraft. Operated 1961-1972, the final Tunnan in service.

Notable Operators

Swedish Air Force / Flygvapnet (former): Primary operator with all 661 Tunnan in Swedish service from 1951 to 1976. Backbone of early Cold War Swedish fighter strength, including UN ONUC combat sorties 1961-1964 against Katangese separatist forces.
Austrian Air Force (former): Sole foreign operator; 30 Tunnan flown 1961-1972 in air-defence and training roles.
Preservation / museums: Around 50 Tunnan survive in Swedish, Austrian and other aviation collections. Key holdings include the Flygvapenmuseum at Linköping and Swedish local museums. A handful remain airworthy and appear at Swedish airshows, offering rare contact with early-1950s Swedish jet-fighter operations.

Frequently Asked Questions

Why is Tunnan called 'Barrel'?

Because of the rounded, near-circular fuselage cross-section — unusual for jet aircraft and well suited to the centrifugal-flow De Havilland Ghost engine inside it. Flygvapnet pilots dubbed the aircraft a 'flying barrel' or 'flying tube', and Saab and the Swedish Air Force formally adopted the 'Tunnan' nickname. The shape carried structural and aerodynamic advantages for an early jet, though later fighters built around axial-flow engines moved to slimmer fuselages.

What was Tunnan's role in the Congo Crisis?

Swedish Air Force J 29B and S 29C Tunnan deployed to Congo under the UN ONUC mission to support operations against Katangese separatist forces from 1961 to 1964. Swedish Tunnan flew thousands of UN sorties, claimed multiple Katangese aircraft destroyed on the ground, and supported UN ground forces. Five Tunnan were lost during Congo operations and three Swedish pilots died in combat and accidents. The deployment remains one of the most consequential combat chapters in the Tunnan's history and a foundational episode in Swedish UN combat aviation.

How does Tunnan compare to F-86 Sabre?

Both are early-1950s swept-wing jet fighters. The F-86 Sabre was a U.S. design with 9,860 built, a top speed of Mach 0.95 and AIM-9 Sidewinder compatibility on later marks; it served globally with many air arms. The Saab 29 Tunnan was a Swedish design with 661 built, a top speed of Mach 0.86 and Rb 24 (Sidewinder-equivalent) compatibility. The Sabre saw far wider combat use, most prominently in the Korean War, while the Tunnan stands out for indigenous Swedish engineering and its UN ONUC service in Congo.

When was Tunnan retired?

Sweden withdrew the Tunnan from front-line service in 1973, with J 29 target-towing aircraft soldiering on until 1976. Austria retired its fleet in 1972. A 25-year career (1951-1976) reflected the type's value in Cold War-era dispersed road-base operations and overseas UN deployments. The Saab 32 Lansen (from 1956), Saab 35 Draken (from 1960) and Saab 37 Viggen (from 1971) progressively replaced it.

Why did Sweden develop indigenous jets?

Swedish neutrality demanded a domestic aerospace industry capable of meeting national-defence needs without reliance on foreign suppliers. Saab's work through the 1940s and 1950s built up indigenous jet design expertise and produced an unbroken sequence — Saab 21R, Saab 29 Tunnan, Saab 32 Lansen, Saab 35 Draken, Saab 37 Viggen and Saab JAS 39 Gripen, with future Tempest and FCAS contributions on the horizon. Few small or medium-sized nations have sustained that kind of indigenous combat-aircraft programme for so long.

Sources

Saab AB — Saab 29 Tunnan heritage
Wikipedia — Saab 29 Tunnan — CC BY-SA.