Johanna Weber

Weber lived in her house till 2010. She died in a nursing home in Farnham, Surrey, on 24 October 2014.

Weber retired in 1975 at the grade of Senior Principal Scientific Officer, and continued to be retained by the RAE as a consultant. She had nearly 100 papers to her name. In 1976, following Küchemann's death, Weber assisted in the publication of his book The Aerodynamic Design of Aircraft, which was published in 1978. She announced that she was done with aerodynamics after that.

In 1961, a prototype aircraft, the Handley Page HP.115, was built to test the low speed performance of the slender delta wing.

Weber made two fundamental contributions to the supersonic effort: tools to predict the drag on a slender delta-winged aircraft during supersonic flight, and shaping the wing to allow the formation of vortices at its leading edge, rather than above or below it. Her work from 1959 onwards contributed to the design and the eventual construction of the Concorde.

Weber also began her research into supersonic transport. In 1955, she showed that a thin delta wing with a high angle of attack could generate sufficient lift to provide the take-off and landing capability, while simultaneously enabling efficient supersonic performance. Küchemann then advocated this wing configuration with the UK Government, resulting in the support for a Mach 2 airliner by the Supersonic Transport Advisory Committee (STAC) in 1956.

Weber remained unmarried all her life. She lived in the RAE hostel until 1953, and then moved into a bedsit attached to Küchemann's house in Wrecclesham, Surrey, where she lived till 1961, when she acquired the house next door to the Küchemanns. She found it difficult to obtain a mortgage, as banks and building societies tended not to lend to single women for home purchases at the time.

Weber's subsequent work with Küchemann was in improving the theory of subsonic aerodynamics. Initial methods treated wing thickness and lift in isolation. In the 1950s, she developed a simultaneous treatment of all the features of a wing (thickness, twist, sweepback, camber) to predict the air pressure distribution over it. The Vickers aircraft team then solved the inverse problem - that of determining the wing shape that best suited a required pressure distribution. The resultant wing shape, the most advanced for a civilian craft, was used on the Vickers VC10 airliner.

In 1946, the British Air Ministry specified a medium-range jet propelled bomber capable of carrying a nuclear weapon. The Handley Page Victor bomber was the most ambitious of the designs proposed in response. Küchemann had kept abreast of German work into swept-wing aircraft, in particular the crescent-shaped wing, and the aerodynamics of supersonic flight. The Victor would have three segmented wings of crescent shape, each with a different sweep angle. Weber assisted with the calculations, and incorporated further design improvements including the engine air inputs based on the work she had done with Küchemann during the war. Her linear and simple aerodynamic models were calculated by hand by a team of women 'computors'. In September 1945, she co-wrote with Küchemann a paper analysing the aerodynamics of the new wing and fuselage.

Following the capture of Göttingen by the US Army in 1945, the city fell into the British occupation zone. The British paid Weber and Küchemann to compile a monograph of their researches. These would form the basis of their text Aerodynamics of Propulsion. They also encouraged German scientists to take up six month contracts at various defence facilities in the UK as part of the combined US-UK plan (Operation Paperclip and Operation Surgeon) to acquire German services and technologies. In October 1946, Küchemann joined the Aerodynamics department at the Royal Aircraft Establishment in Farnbourough, and persuaded Weber to join him. Both of them continued to renew their six-month contracts, although both remained classed as enemy aliens, until 1953 when both were naturalised as British citizens.

In 1939, Weber joined the Aerodynamics Research Institute (Aerodynamische Versuchsanstalt Göttingen) in Göttingen. She was part of a small theoretical team, and her initial training in aerodynamics consisted of wind tunnel corrections. Here she met and began her lifelong collaboration with Dietrich Küchemann.

In 1929, she began studies in chemistry and mathematics at the University of Cologne, but switched a year later to the University of Göttingen. She graduated with a first class honours degree in 1935, and then trained as a teacher for two years. As she did not join the Nazi party, she was not allowed to join a teaching post. Her remaining family, comprising her mother and sister, were in need of financial support, so she sought employment in the armaments industry.

Johanna Weber (8 August 1910 – 24 October 2014) was a German-born British mathematician and aerodynamicist. She is best known for her contributions to the development of the Handley Page Victor bomber and the Concorde.

Johanna Weber was born in a family of Walloon origin in Düsseldorf, Germany, on August 8, 1910. Her father died in the First World War. As a 'war orphan', Weber was eligible for financial support, and she attended a convent school.