In-flight investigation of the effects of higher-order control system dynamics on longitudinal handling qualities /

Includes bibliographicsl references (page 178).Print reproduction.Air Force Contract No.Mode of access: Internet

Flight evaluation of various short period dynamics at four drag configurations for the landing approach task /

The T-33 variable stability and variable drag airplane was used in a flight program to evaluate various longitudinal short period characteristics at each of four drag configurations for the landing approach task. Pilot rating and comment data were collected and used to determine short period requirements for the landing approach task. The importance of the slope of the thrust required vs. velocity curve is discussed and related to pilot comments and control difficulties. The longitudinal control gain selected by the pilot was a function of short period frequency and damping ratio. Curves relating control authority and short period frequency and damping ratio are derived from these data. The power spectral density of the pilot's elevator stick motion was found to be significantly affected by short period dynamics and atmospheric turbulence."Cornell Aeronautical Laboratory report no. TB-1630-F-3."AD0608620 (from http://www.dtic.mil)."October 1964."Includes bibliographical references (pages 76-79).The T-33 variable stability and variable drag airplane was used in a flight program to evaluate various longitudinal short period characteristics at each of four drag configurations for the landing approach task. Pilot rating and comment data were collected and used to determine short period requirements for the landing approach task. The importance of the slope of the thrust required vs. velocity curve is discussed and related to pilot comments and control difficulties. The longitudinal control gain selected by the pilot was a function of short period frequency and damping ratio. Curves relating control authority and short period frequency and damping ratio are derived from these data. The power spectral density of the pilot's elevator stick motion was found to be significantly affected by short period dynamics and atmospheric turbulence.Air Force Contract No.Mode of access: Internet

Summary of instrumentation development and aerodynamic research in a hypersonic shock tunnel.

"December 1958."ASTIA document no. 207615.Includes bibliographical references (pages 10-11).Prepared by Cornell Aeronautical Laboratory, Inc., Buffalo, New York, under Contract no.Mode of access: Internet

Catalytic surface recombination in boundary-layer profiles of the Falkner-Skan type /

Reactant concentrations in the diffusion-controlled flow over a surface of constant catalycity are calculated for the Falkner-Skan family of profiles. The heat release due to surface recombination is found to be insensitive to the pressure gradient when the wall is relatively noncatalytic; for catalytic walls a decreasing pressure gradient (i.e., more strongly accelerated flow) tends to increase the heat transfer.Research supported by the United States Air Force and performed by the Cornell Aeronautical Laboratory, Inc.AD0288024. (From http://www.dtic.mil)."CAL Report No. AF-1412-A-1.""September 1962."Includes bibliographical references (pages 30-31).Reactant concentrations in the diffusion-controlled flow over a surface of constant catalycity are calculated for the Falkner-Skan family of profiles. The heat release due to surface recombination is found to be insensitive to the pressure gradient when the wall is relatively noncatalytic; for catalytic walls a decreasing pressure gradient (i.e., more strongly accelerated flow) tends to increase the heat transfer.Air Force Contract No.Mode of access: Internet

Flow phenomena in starting a hypersonic shock tunnel /

"March 1955."Includes bibliographical references (pages 24-25).Print reproduction.U.S. Air Force Contract No.Mode of access: Internet