14 Matching Results

Search Results

Advanced search parameters have been applied.

Hovering-flight tests of a model of a transport vertical-take-off airplane with tilting wing and propellers

Description: Report presenting an investigation of the take-off, landing, and hovering-flight characteristics of a four-engine transport vertical-take-off airplane with tilting wing and propellers using a remotely controlled free-flight model. The model had four propellers distributed along the wing with the thrust axes in the wing-chord plane.
Date: March 1956
Creator: Lovell, Powell M., Jr. & Parlett, Lysle P.
Partner: UNT Libraries Government Documents Department

Flight tests of a model of a high-wing transport vertical-take-off airplane with tilting wing and propellers and with jet controls at the rear of the fuselage for pitch and yaw control

Description: An investigation of the stability and control of a high-wing transport vertical-take-off airplane with four engines during constant-altitude transitions from hovering to normal forward flight was conducted with a remotely controlled free-flight model. The model had four propellers distributed along the wing with the thrust axes in the wing chord plane. The wing could be rotated to 90 degrees incidence so that the propeller thrust axes were vertical for hovering flight. An air jet at the rear of the fuselage provided pitch and yaw control for hovering and low-speed flight.
Date: March 1957
Creator: Lovell, Powell M., Jr. & Parlett, Lysle P.
Partner: UNT Libraries Government Documents Department

Transition-flight tests of a model of a low-wing transport vertical-take-off airplane with tilting wing and propellers

Description: An investigation of the stability and control of a low-wing four-engine transport vertical-take-off airplane during the transition from hovering to normal forward flight has been conducted with a remotely controlled free-flight model. The model had four propellers distributed along the wing with the thrust axes in the wing-chord plane. The wing could be rotated to 90 degrees incidence so that the propeller thrust axes were vertical for hovering flight.
Date: September 1956
Creator: Lovell, Powell M., Jr. & Parlett, Lysle P.
Partner: UNT Libraries Government Documents Department

Hovering flight tests of a four-engine-transport vertical take-off airplane model utilizing a large flap and extensible vanes for redirecting the propeller slipstream

Description: Report presenting an investigation of the take-off, landing, and hovering-flight characteristics of a four-engine-transport, vertical take-off airplane with a remotely controlled free-flight model. The model had four propellers distributed along the wing with thrust axes parallel to the fuselage axis. Results regarding hovering flight at altitude, hovering flight near the ground, take-offs and landings, and preliminary tests with lower vanes installed are provided.
Date: May 1955
Creator: Tosti, Louis P. & Davenport, Edwin E.
Partner: UNT Libraries Government Documents Department

Longitudinal stability investigation of a vertical-take-off-and-landing airplane configuration with simulated jet intake and exhaust at Mach numbers of 1.61 and 2.01

Description: Report presenting an investigation of a semispan model of a possible vertical-take-off-and-landing jet bomber configuration at a range of Mach numbers. The primary objective was to determine to the effects of jet interference, horizontal-tail location, and canard controls on the longitudinal stability characteristics of the model.
Date: January 30, 1958
Creator: Lord, Douglas R.
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

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.
Date: October 1956
Creator: Kirby, Robert H.
Partner: UNT Libraries Government Documents Department

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

Description: Report presenting the results of an investigation of the dynamic stability and controllability of a proposed supersonic-cruise, vertical-take-off-and-landing airplane configuration with a tilting wing and engines. The configuration tested was found to have satisfactory take-off, landing, and hovering characteristics. Information about transition flight, including stability and control characteristics, is provided.
Date: August 26, 1958
Creator: Kirby, Robert H. & Hassell, James L., Jr.
Partner: UNT Libraries Government Documents Department

Investigation of the effects of ground proximity and propeller position on the effectiveness of a wing with large-chord slotted flaps in redirecting propeller slipstreams downward for vertical take-off

Description: Report presenting an investigation of the effects of ground proximity and propeller position on the effectiveness of a wing equipped with large-chord slotted flaps in redirecting the slipstreams from large-diameter propellers downward for vertical take-off. Results regarding the characteristics of basic configuration in the ground-effect region, effect of propeller position, comparison of characteristics of one- and two-propeller models, characteristics of modified configuration, and effect of ground on propeller characteristics are provided.
Date: March 1956
Creator: Kuhn, Richard E.
Partner: UNT Libraries Government Documents Department

Wind-tunnel investigation of the low-speed stability and performance characteristics of a jet-powered low-aspect-ratio vertical-take-off-and-landing configuration with engines buried in tiltable wings

Description: Report presenting an investigation in the full-speed tunnel to determine the low-speed stability and performance characteristics of a model of a jet-powered airplane configuration capable of vertical takeoff and landing with engines in a tiltable low-aspect-ratio wing. Static longitudinal and lateral characteristics were obtained for various angles of attack, wing tilt angles, and thrust coefficient suitable for takeoff and landing.
Date: August 6, 1958
Creator: Scallion, William I. & Cone, Clarence D., Jr.
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

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.
Date: October 1956
Creator: Kirby, Robert H.
Partner: UNT Libraries Government Documents Department

Dynamic model investigation of two tail-sitter vertically rising airplanes to determine the altitude required to approach normal flight conditions under power failure in hovering flight

Description: From Summary: "An investigation has been undertaken on two dynamic models simulating 1/20-scale and 1/25-scale models of propeller-driven tail-sitter vertically rising airplanes to determine the altitude required to approach normal-flight conditions after power failure in hovering flight. The results of the investigation indicated that, for the two models investigated, an altitude of 3,600 to 5,400 feet may be required to attain normal gliding flight."
Date: November 9, 1956
Creator: Klinar, Walter J. & Wilkes, L. Faye
Partner: UNT Libraries Government Documents Department

Transition-flight investigation of a four-engine-transport vertical-take-off airplane model utilizing a large flap and extensible vanes for redirecting the propeller slipstream

Description: Report presenting an experimental investigation to determine the dynamic stability and control characteristics of a four-engine-transport vertical-take-off airplane model in the transition range from hovering to normal forward flight. Both flight and static-force tests were conducted and flight testing was carried out with a pitch damper installed. Results regarding longitudinal stability and control and lateral stability and control are provided.
Date: December 1957
Creator: Tosti, Louis P.
Partner: UNT Libraries Government Documents Department

Wind-Tunnel Investigation of Two Vertical-Takeoff-and-Landing Jet Bomber Airplane Configurations at Mach Numbers of 1.94 and 2.40

Description: Report presenting an investigation to obtain information about the basic aerodynamic characteristics of two vertical-take-off-and-landing jet bomber airplanes, one with a high wing and one with a low wing. Results regarding pitch and sideslip are provided. The high-tail configurations were found to have higher lift-drag ratios for both high- and low-wing models.
Date: October 31, 1956
Creator: Jones, Robert A. & Rainey, Robert W.
Partner: UNT Libraries Government Documents Department

Low-Speed Wind-Tunnel Tests of a 1/8-Scale Model of the Bell D-188A VTOL Airplane

Description: Report discussing the results of an investigation to determine the low-speed power-off stability and control characteristics of a model of the Bell D-188A VTOL airplane. The static stability and control characteristics were generally satisfactory except above certain angles of attack and aileron effectiveness dropped off as the angle of attack was increased. Modifications for increasing the directional stability by altering the vertical tails are also described.
Date: August 1, 1958
Creator: McKinney, Marion O. & Smith, Charles C., Jr.
Partner: UNT Libraries Government Documents Department