Gull wing
A wing with a prominent bend near the root.
The gull wing, sometimes called the Polish wing or Puławski wing, is an aircraft wing shape marked by a sharp upward bend in the inner section near the fuselage. It gets its name from the seabirds it looks like and from Polish designer Zygmunt Puławski, who first used it in his aircraft. Many planes have featured this wing for various reasons. In high-wing designs, it often improved the pilot’s view, since the wing could be thinnest next to the body, theoretically blocking no more of the pilot’s sight than a car’s windshield pillars.
Gliders were the first to use the gull wing, starting with the Weltensegler in 1921, but the design didn’t become popular until the record-setting Fafnir appeared near the end of that decade. Over the next thirty years, the gull wing became common among high-performance sailplanes, and various land-based planes and flying boats also adopted it. It was especially prominent in Poland, where Puławski created a series of fighter aircraft in the late 1920s and early 1930s. The PZL P.11, which combined a high-mounted gull wing with other advanced features, was considered the most advanced fighter of its kind when it debuted. It served as Poland’s main fighter through the mid-to-late 1930s, and its successor, the PZL P.24, was sold to several other air forces, becoming a major success for Poland’s aircraft industry.
Flying boats like the Short Knuckleduster, Dornier Do 26, and PBM Mariner also used the gull wing, mainly because it let them mount engines higher above the water. A variation, the inverted gull wing, appears on many fighters to allow shorter landing gear and enough ground clearance for propellers.
**Sailplanes**
The gull wing first appeared on a glider, the Weltensegler, which first flew in 1921. Its wings were externally braced and had swept-back tips with negative incidence compared to the rest of the wing. The Weltensegler also used an unusual control system: pulleys and springs connected to a single control stick that warped the wingtips as the pilot moved it. This method relied on changes in incidence from tension, and was thought to improve pitch and roll stability automatically, but it gave no direct control over the tips. The glider’s career was short—it was destroyed during the 1921 Rhön competition when a wing failed in a sharp, high-speed spiral dive, killing test pilot Willy Leusch.
- First aircraft
- Weltensegler (1921)
- First glider with gull wing
- Weltensegler (1921)
- First flying boat with gull wing
- Short Knuckleduster (1933)
- Notable designer
- Zygmunt Puławski
- Notable fighter
- PZL P.11
- Inverted gull wing example
- Vought F4U Corsair
Lore & Background
The gull wing was first implemented on a glider, the Weltensegler, which performed its maiden flight in 1921. Its wings were externally braced and featured swept-back wingtips with negative incidence. The Weltensegler used a unique control system with pulleys and springs, but was destroyed during the 1921 Rhön gliding competition after a wing failure, resulting in the death of test pilot Willy Leusch. Following this loss, the gull wing was avoided for almost a decade until Alexander Lippisch's record-breaking Fafnir in 1930, which demonstrated a 220 km flight and established a new world record, sparking a resurgence. The gull wing became a trend in the glider industry during the 1930s and remained a staple in high-performance sailplanes through the 1950s.
During the late 1920s, the gull wing found its way into landplanes. In 1928, Polish designer Zygmunt Puławski developed the PZL P.1 experimental fighter with a high-mounted gull wing, filing a patent the following year. This arrangement, known as the Puławski Wing or Polish Wing, led to production models like the PZL P.7 and PZL P.11. The gull wing was used to improve visibility in high wing arrangements, as the wing could be thinnest by the fuselage. The PZL P.11 served as Poland's primary fighter during the mid to late 1930s. The configuration was also adopted by flying boats such as the Short Knuckleduster, Dornier Do 26, and PBM Mariner, primarily to position engines higher above the water.
Reader's Guide
The gull wing configuration has been used across diverse aircraft types for distinct purposes. In gliders, it began with the Weltensegler in 1921 and gained popularity after the Fafnir's record flight in 1930, remaining common in high-performance sailplanes through the 1950s. In landplanes, Zygmunt Puławski's designs from 1928 onward made the gull wing a notable feature of Polish fighter aircraft, with the PZL P.11 being considered the most advanced fighter of its kind upon introduction. The configuration improved pilot visibility in high-wing designs. In seaplanes, the gull wing allowed engines to be mounted higher for propeller clearance over water, as seen in the Short Knuckleduster, Dornier Do 26, and PBM Mariner. The inverted gull wing variant was developed for fighters like the Vought F4U Corsair to allow shorter landing gear and accommodate large propellers. The emergence of long-range land-based jets in the 1950s limited further seaplane use, though the gull wing persisted in some post-war designs like the Beriev Be-12 Chaika. A modern example is the electric Alia CX300.
Did You Know?
- The gull wing is also known as the Polish wing or Puławski wing, after designer Zygmunt Puławski.
- The first aircraft to feature a gull wing was the Weltensegler glider in 1921.
- The inverted gull wing was used on the Vought F4U Corsair to allow shorter landing gear.
- The PZL P.11 was considered the most advanced fighter aircraft of its kind upon introduction.
More in Aircraft Components, Part 3 1-24
Spotted an error? Know more?
Reader corrections go straight into our review queue. Suggest an edit · How this site is sourced