Frances Beatrice Bradfield OBE FRAeS (9 October 1895– 26 February 1967) was an aeronautical engineer at the Royal Aircraft Establishment (RAE).

[4][5][6] Frances Bradfield was born in 1895, in Leicester,[7] and in 1914 "came up" to Newnham College, Cambridge, graduating with a second class BA degree in Mathematics in 1917.

Glauert was killed in an accident in 1934, and so Douglas was appointed Head of Aerodynamics Department and Bradfield became the Head of Wind Tunnels (more informally known as the small wind tunnel section of the model research department), a role she held for the remainder of the 1930s and throughout World War II.

Ellis presented a paper before the Royal Aeronautical Society on "The Use of Model Data in Aeroplane Design," published in the Women Engineer.

In December 1941, Bradfield was one of the two female Associate Fellows of the Royal Aeronautical Society doing "important work" at RAE Farnborough.