Stability and Control Flight Tests of a Vertically Rising Airplane Model Similar to the Lockheed XFV-1 Airplane

Stability and Control Flight Tests of a Vertically Rising Airplane Model Similar to the Lockheed XFV-1 Airplane

Date: January 1, 1954
Creator: Kirby, Robert H.
Description: This paper presents the results of an investigation of the dynamic stability and controllability of a model which approximately represents the Lockheed XFV-1 airplane to a 1/8 scale. The investigation consisted of hovering flights in still air at a considerable height above the ground, hovering flights very close to the ground, vertical take-offs and landings, flights through the transition range from hovering to normal forward flight, and sideways translational flights. The model could be flown smoothly and easily in hovering flight despite the fact that the uncontrolled pitching and yawing motions were unstable oscillations. There was a noticeable reduction in the controllability of the model when hovered very close to the ground but take-offs could be made easily and landings on a g,ven spot could be made accurately in spite of this adverse ground effect. Flights through the transition range from hovering to normal forward flight could be performed fairly easily. The model seemed to have stability of angle of attack and angle of roll over most of the transition range. The yawing motion was divergent in the very high angle-of-attack range but could be controlled easily. At the lower angles of attack, the model seemed to become stable in ...
Contributing Partner: UNT Libraries Government Documents Department
Exploratory investigation of the effectiveness of biplane wings with large-chord double slotted flaps in redirecting a propeller slipstream downward for vertical take-off

Exploratory investigation of the effectiveness of biplane wings with large-chord double slotted flaps in redirecting a propeller slipstream downward for vertical take-off

Date: October 1, 1956
Creator: Kirby, Robert H
Description: Results are presented from static-force tests on biplane wings with large-chord double slotted flaps which turn the slipstream of a single counter rotating propeller downward for vertical take-off. The investigation provided information on the effect of chord length, flap deflection, propeller position, end plates, fuselage, and ground proximity on the efficiency of the wing system in turning the propeller slipstream.
Contributing Partner: UNT Libraries Government Documents Department
Flight investigation of the stability and control characteristics of vertically rising airplane research model with swept or unswept wings and x- or +-tails

Flight investigation of the stability and control characteristics of vertically rising airplane research model with swept or unswept wings and x- or +-tails

Date: October 1, 1956
Creator: Kirby, Robert H
Description: The take-off, landing, hovering, and transition flight characteristics of a propeller-driven, fighter-type, vertically rising airplane model were obtained from time histories of the flights and from the pilots' opinions of the flight characteristics. In general, there were no major differences in the behavior of any of the configurations, all of which performed satisfactorily.
Contributing Partner: UNT Libraries Government Documents Department
Dynamic stability and control characteristics of a ducted-fan model in hovering flight

Dynamic stability and control characteristics of a ducted-fan model in hovering flight

Date: April 22, 1954
Creator: Kirby, Robert H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of a tilting-wing vertical-take-off-and-landing jet airplane model in hovering and transition flight

Investigation of a tilting-wing vertical-take-off-and-landing jet airplane model in hovering and transition flight

Date: August 26, 1958
Creator: Kirby, Robert H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Stability and control flight tests of a 0.13-scale model of the consolidated-Vultee XFY-1 airplane in take-offs, landings, and hovering flight : TED No. NACA DE 368

Stability and control flight tests of a 0.13-scale model of the consolidated-Vultee XFY-1 airplane in take-offs, landings, and hovering flight : TED No. NACA DE 368

Date: October 1, 1952
Creator: Lovell, Powell M., Jr.
Description: None
Contributing Partner: UNT Libraries Government Documents Department