Download or read book An Experimental Investigation of the Effect of Propellers Used as Aerodynamic Brakes on Stability and Control written by Victor I. Stevens and published by . This book was released on 1945 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of negative thrust were found to be significant. The longitudinal stability was increased because of the loss of wing lift and increase of the angle of attack of the tail. Directional stability and both longitudinal and directional control were decreased because of the reduced velocity at the tail. These effects are moderate for moderate braking but become pronounced with full-power braking, particularly at high values of lift coefficient.

Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1949 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NACA Wartime Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by and published by . This book was released on 1949 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wartime Report A written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Investigation of the Thrust and Torque Produced by Propellers Used as Aerodynamic Brakes written by William S. Hedrick and published by . This book was released on 1944 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a wind-tunnel investigation of propellers operating at negative thrust. Negative-thrust characteristics of two- and four-blade single propellers and four- and eight-blade duel propellers were determined. Flight conditions were simulated by installing the propellers in a powered model of a high-speed model.

Download or read book Wartime Report Release List written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1947 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NACA University Conference on Aerodynamics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1948 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Government Publications Monthly Catalog written by and published by . This book was released on 1947 with total page 1792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Government Publications Monthly Catalog written by United States. Superintendent of Documents and published by . This book was released on 1947 with total page 1540 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.

Download or read book NASA Contractor Report written by United States. National Aeronautics and Space Administration and published by . This book was released on 1970 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect on Stability and Control of a Pusher Propeller Behind Conventional Tail Surfaces as Determined by Tests of a Powered Model in the Free flight Tunnel written by John P. Campbell and published by . This book was released on 1943 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: The effects on stability and control of a pusher propeller behind conventional horizontal and vertical tail surfaces have been determined in the NACA free-flight tunnel by tests of a 1/10-scale model of an NACA submerged-engine pusher airplane design. The investigation consisted of flight and balance tests at windmilling and high-power conditions with a partial-span Zap extensible flap extended and retracted. The effects of changes in vertical-tail area, horizontal-tail incidence, and center-of-gravity location were also determined.

Download or read book A Study of NACA and NASA Published Information of Pertinence in the Design of Light Aircraft written by Clifford J. Moore and published by . This book was released on 1970 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report investigates critical reviews of NACA and NASA report literature on light aircraft design, with emphasis on propulsion subsystems, stability, control, propellers, performance, and safety.

Download or read book Effect of Powered Propellers on the Aerodynamic Characteristics and the Porpoising Stability of a Dynamic Model of a Long range Flying Boat written by Norman S. Land and published by . This book was released on 1943 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: The tests described in this report were made on a 1/8-full-size model of a large, long-range, twin-engine flying boat in NACA tank no. 1. The airplane had a wing loading of 43.9 pounds per square foot and a power loading of 11.5 pounds per horsepower. Its arrangement was such that 34.2 percent of the wing area and 56.1 percent of the horizontal tail area were included within the fore-and-aft projection of the propeller disks. The model was fitted with leading-edge slats to make the angle of attack for maximum lift coefficient correspond with that of the airplane at the low Reynolds number associated with the tank tests (3.28 x 105 based on the mean aerodynamic chord and the get-away speed of the model). The model was equipped with two three-blade metal propellers of scale diameter and form, power for which was furnished by two variable-frequency alternating-current motors. Sufficient power was available to develop scale thrust with the propellers. The tests were divided into two parts: (1) aerodynamic tests to determine the effect of the slipstream and thrust from the powered propellers on the lift and trimming-moment characteristics, and (2) hydrodynamic tests to determine the effect of the powered propellers on the range of stable locations of the center of gravity.

Download or read book Wartime Report A written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1945 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerospace Engineering Index written by and published by . This book was released on 1948 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Investigation of Flutter of a Propeller with Clark Y Section Operating at Zero Forward Velocity at Positive and Negative Blade angle Settings written by John E. Baker and published by . This book was released on 1949 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: The highest flutter speeds were found in the vicinity of the angle of zero aerodynamic moment and the flutter speed increased considerably in this region with decreasing pressure. Over the rest of the pitch range, the flutter speeds were much lower and varied little with pressure.