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Investigation of some wake vortex characteristics of an inclined ogive-cylinder body at Mach number 1.98
Report presenting measurements of the pitot-pressure distributions in the flow field, pressure distributions over the body, and downwash distributions through shed vortices for an inclined body of revolution at a free-stream Mach number of 1.98. Results regarding the experimental pressure distributions and vortex positions, vortex strengths computed from experiment, comparisons of theoretical and experimental vortex paths, and comparisons of theoretical and experimental downwash distributions through the body vortices are provided.
Date:
August 23, 1955
Creator:
Jorgensen, Leland H. & Perkins, Edward W.
System:
The UNT Digital Library
A method for evaluating the loads and controllability aspects of the pitch-up problem
Report presenting a procedure for estimating the range of peak airplane load factors and maneuvering tail loads likely to be experienced in pitch-up maneuvers. Results of computations indicated that though the load factors and maneuvering tail loads were not critical in pitch-up maneuvers at 35,000 feet, they were likely to exceed design levels at 15,200 feet.
Date:
August 23, 1955
Creator:
Sadoff, Melvin; Matteson, Frederick H. & Havill, C. Dewey
System:
The UNT Digital Library
Summary and Analysis of Horizontal-Tail Contribution to Longitudinal Stability of Swept-Wing Airplanes at Low Speeds
Report discussing available wind-tunnel data on low-speed horizontal-tail contribution to the static longitudinal stability of high-speed airplane configurations with unswept and sweptback wings. The effects of variations of tail position, wing plan form, airfoil section, trailing-edge flaps, stall-control devices, and ground interference on air-flow characteristics an tail contribution are also described.
Date:
August 23, 1955
Creator:
Neely, Robert H. & Griner, Roland F.
System:
The UNT Digital Library
Application of statistical theory to beam-rider guidance in the presence of noise 1: Wiener filter theory
Report presenting a study of the application of Wiener filter theory to the design of a beam-rider guidance system operating in the presence of glint noise. The theory is then used to establish the theoretical lower limit of root-mean-square error and the corresponding desired transfer-function characteristics.
Date:
August 23, 1955
Creator:
Stewart, Elwood C.
System:
The UNT Digital Library