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Full-scale wind-tunnel tests of the longitudinal stability and control characteristics of the XV-1 convertiplane in the autorotating flight range
Force and moments were measured for the XV-1 convertiplane at 75 to 150 knots. Rotor on and off and propeller powered and off configurations were investigated. The characteristics of the V-tab horizontal tail and its downwash field were studied. Lift interference between fixed wing and rotor and possible means of drag reduction were considered.
Date:
May 17, 1956
Creator:
Hickey, David H.
System:
The UNT Digital Library
Investigation of the possibility of simplifying missile guidance systems by the use of free-floating flaps and spring-mounted control surfaces
Report presenting an investigation of the use of aerodynamic and mechanical devices for improving the response of guided missiles. An analysis indicates that the use of free-floating flaps and spring-mounted control surfaces should be able to increase maneuverability to the point that electronic automatic stabilization and gain-adjusting devices can be eliminated.
Date:
May 17, 1956
Creator:
Hikido, Katsumi; Hayashi, Paul H. & Lessing, Henry C.
System:
The UNT Digital Library
The Irradiance Dependency of Exposure Time as a Factor in Determining the Severity of Radiant Thermal Burns
None
Date:
May 17, 1956
Creator:
Hinshaw, J. R.
System:
The UNT Digital Library
A Method of Reducing Heat Transfer to Blunt Bodies by Air Injection
Report presenting investigations of the effect of air injection at the stagnation point on the heat-transfer characteristics of a hemisphere in a supersonic stream. Results regarding air injection directly into the stream and air injection tangent to surface are provided.
Date:
May 17, 1956
Creator:
Stalder, Jackson R. & Inouye, Mamoru
System:
The UNT Digital Library
Some Notes on the Violent Lateral-Longitudinal Coupling Motions of the Douglas X-3 Airplane in Aileron Rolls
Report presenting a study of the potentially large violent coupled motions encountered by the Douglas X-3 in flight. Testing indicated that the motions encountered appeared to be caused by the inclination of the principal axis below the flight path at the onset of rolling maneuvers and the existence of pitching moment due to side slip combined with a trim change near Mach number 1. Results regarding the effect of principal-axis inclination, effect of changes in directional stability, effect of pitching moment due to sideslip, effect of trim changes, and effect of roll direction are provided.
Date:
May 17, 1956
Creator:
Stone, Ralph W., Jr.
System:
The UNT Digital Library
Transonic wind-tunnel measurements of static lateral and directional stability and vertical-tail loads for a model with a 45 degree sweptback wing
Report presenting an investigation to determine the vertical-tail loads and airplane characteristics in sideslip for a model of a swept-wing fighter-type airplane in the 16-foot transonic tunnel at a range of Mach numbers and angles of attack. Results regarding the effect of the unsealed vertical-tail root on airplane coefficients, directional and lateral stability, vertical-tail loads, effect of leading-edge chord-extensions on lateral and directional characteristics and on tail loads, and pitching moments in sideslip are provided.
Date:
May 17, 1956
Creator:
Hallissy, Joseph M., Jr.
System:
The UNT Digital Library