Knight, Montgomery: Static Thrust Analysis of the Lifting Airscrew N.A.C.A. Tech Note 626--Analytical Comparison of Helicopter and Airplane in Level Flight, 1938

Knight, Montgomery: Static Thrust Analysis of the Lifting Airscrew N.A.C.A. Tech Note 626--Analytical Comparison of Helicopter and Airplane in Level Flight, 1938, SERIES 2, Box: 6, Folder: 13. School of Aerospace Engineering records, UA328. Archives and Special Collections, Library, Georgia Institute of Technology. https://finding-aids.library.gatech.edu/repositories/2/archival_objects/4615 Accessed November 23, 2024.