Download or read book Investigation of the Aerodynamic Characteristics of a Model Wing propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90 written by John W. Draper and published by . This book was released on 1954 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an investigation conducted in the Langley 300 mph 7- 10-foot wind tunnel for the purpose of determining the aerodynamic characteristics of a model wing-propeller combination, and of the wing and propeller separately at angles of attack up to 90 degrees. The tests covered thrust coefficients corresponding to free-stream velocities from zero forward speed to the normal range of cruising speeds. The results indicate that increasing the thrust coefficient increases the angle of attack for maximum lift and greatly diminishes the usual reduction in lift above the angle of attack for maximum lift.

Download or read book Investigation of the Aerodynamic Characteristics of a Model Wing propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90 Degrees written by Richard E. Kuhn and published by . This book was released on 1956 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Aerodynamic Characteristics of a Model Wing Propeller Combination and of the Wing and Propeller Separately at Angles of Attack U P to 90 written by Richard E. Kuhn and published by . This book was released on 1956 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Aerodynamic Characteristics of a Model Wing propeller Combination and of the Wing and Propeller Separately at Angels of Attack Up to 90 O written by Richard E. Kuhn and published by . This book was released on 1956 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Aerodynmaic Characteristics of a Model Wing propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90 written by John W. Draper and published by . This book was released on 1954 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerodynamic Characteristics at High Speeds of Full scale Propellers Having Different Shank Designs written by Julian D. Maynard and published by . This book was released on 1947 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Propeller Location and Flap Deflection on the Aerodynamic Characteristics of a Wing propeller Combination for Angles of Attack from 0 to 80 Degrees written by William A. Newsom and published by . This book was released on 1957 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made to determine the effect of propeller location and flap deflection on the lift, drag, and pitching-moment characteristics of a wing-propeller combination over an angle-of-attack range from 0 to 80 degrees. The model had four propellers, the slipstream from which covered practically the entire span of the wing. The wing had a 30-percent-chord slotted flap and an 8.5-percent-chord slat. Data were obtained for flap deflections of 0, 20, 40, and 60 degrees with the slat off and on. For one propeller position the power input to the model was measured and tuft studies of the flow on the wing were made. The data are analyzed to assess the feasibility, from consideration of stability and control, of a tilting-wing vertical-take-off-and-landing airplane with the wing pivoted behind the primary wing structure to provide a desirable structural configuration. The main object of the investigation was to determine whether advantage might be taken of the forward shift of the center of gravity of the airplane, as the wing is tilted from an angle of attack of 90 to 0 degrees, to minimize the change in trim pitching moment throughout the transition speed range for such a configuration. The results indicate that with proper propeller position and programming of flap deflection, it is possible to design a configuration of this type in which essentially no change in trim is required throughout the transition from hovering to normal unstalled forward flight.

Download or read book Aerodynamics of the Propeller written by Fritz Weinig and published by . This book was released on 1948 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Wind tunnel Investigation of Three Propellers Through an Angle of attack Range from 0 Degree to 85 Degrees written by Paul F. Yaggy and published by . This book was released on 1960 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerodynamic Characteristics of a General Tilt wing propeller Model Tested at Slow Speeds and High Angles of Attack written by Joseph James Traybar and published by . This book was released on 1968 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic characteristics of a general tilt-wing/propeller model were investigated at the Princeton Dynamic Model Tract Facility. The experiments included test conditions corresponding to free-stream velocities from slow backward flight through hovering and transition. Wing incidence angles ranging from 30 degrees (forward flight) to 90 degrees (hovering flight) were investigated. The experimental data are presented in graphs of lift, horizontal force, and pitching moment versus thrust in coefficient form based on free-stream velocity. (Author).

Download or read book Preliminary Investigation of the Characteristics of a Two dimensional Wing and Propeller with the Propeller Plane of Rotation in the Wing chord Plane written by David H. Hickey and published by . This book was released on 1957 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic characteristics of a wing-propeller combination with the propeller rotating in the wing-chord plane of a two-dimensional wing were investigated. The wing had a 4-1/2-foot chord length. Total static lift was measured with and without the wing for a 3-foot-diameter propeller; the effects of a ground plane on the static lift of the wing-propeller combination were measured with a 2-foot-diameter propeller. Lift and pressure distributions at several angles of attack and free-stream airspeeds from 0 to 93 feet per second were obtained with the 3j-foot diameter wing-propeller combination.

Download or read book Study of the Aerodynamic Characteristics of a High Lift Device Based on a Rotating Cylinder and Flap written by Stanford University. Thermosciences Division and published by . This book was released on 1961 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1986 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Propeller Location and Flap Deflection on the Aerodynamic Characteristics of a Wing propeller Combination for Angles of Attack from 0 to 80 written by William A. Newsom and published by . This book was released on 1957 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Aerodynamic Investigation of a Four blade Propeller Operating Through an Angle of attack Range from 0 degree to 180 degrees written by H. Clyde McLemore and published by . This book was released on 1954 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerodynamic Characteristics of a Full scale Propeller Tested with Both Rigid and Flapping Blades and with Cyclic Pitch Control written by Kenneth W. Mort and published by . This book was released on 1963 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: