%0 E-Resource %0 Microform %0 U.S. Federal Government Document %0 Book %A Rossow, Vernon J. %E Ames Research Center %I National Aeronautics and Space Administration, Ames Research Center %D 1985 %C Moffett Field, Calif. %G English %B NASA technical memorandum ; %T Effect of ground and/or ceiling planes on thrust of rotors in hover %U https://purl.fdlp.gov/GPO/LPS104581