The Effect of the Ground on a Helicopter Rotor in Forward Flight

[kolibri282]

title: The Effect of the Ground on a Helicopter Rotor in Forward Flight
author: Cheeseman, I. C; Bennet, W. C.
comment: report from 1955 showing dependency of ground effect on flight speed
https://reports.aerade.cranfield.ac.uk/handle/1826.2/3590