Letter from A. Fage, Aerodynamics Dept., National Physical Laboratory to Frederick Lanchester

Scope and Content

Asks permission to reproduce Lanchester’s diagrams of the vortex theory of the airscrew in a book he is writing, “Airscrews in theory and experiment” (1920). He asks Lanchester the date of first publication of his airscrew theory. Does Lanchester claim priority over Drsewiecki, 1892?