Effects Of Inlet Modification And Rocket Rack Extension On The Longitudinal Trim And Low Lift Drag Of The Douglas F5d 1 Airplane As Obtained With A 0
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Effects Of Inlet Modification And Rocket Rack Extension On The Longitudinal Trim And Low Lift Drag Of The Douglas F5d 1 Airplane As Obtained With A 0
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Author : Earl C. Hastings
language : en
Publisher: BiblioGov
Release Date : 2013-07
Effects Of Inlet Modification And Rocket Rack Extension On The Longitudinal Trim And Low Lift Drag Of The Douglas F5d 1 Airplane As Obtained With A 0 written by Earl C. Hastings and has been published by BiblioGov this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07 with categories.
A flight investigation was conducted to determine the effects of an inlet modification and rocket-rack extension on the longitudinal trim and low-lift drag of the Douglas F5D-1 airplane. The investigation was conducted with a 0.125-scale rocket-boosted model which was flight tested at the Langley Pilotless Aircraft Research Station at Wallops Island, Va. Results indicate that the combined effects of the modified inlet and fully extended rocket racks on the trim lift coefficient and trim angle of attack were small between Mach numbers of 0.94 and 1.57. Between Mach numbers of 1.10 and 1.57 there was an average increase in drag coefficient of about o,005 for the model with modified inlet and extended rocket racks. The change in drag coefficient due to the inlet modification alone is small between Mach numbers of 1.59 and 1.64
A New Dimension Wallops Island Flight Test Range
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Author : Joseph Adams Shortal
language : en
Publisher:
Release Date : 1978
A New Dimension Wallops Island Flight Test Range written by Joseph Adams Shortal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Aeronautics categories.
Effect Of Wing Mounted External Stores On The Lift And Drag Of The Douglas D 558 Ii Research Airplane At Transonic Speeds
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Author : Jack Nugent
language : en
Publisher:
Release Date : 1957
Effect Of Wing Mounted External Stores On The Lift And Drag Of The Douglas D 558 Ii Research Airplane At Transonic Speeds written by Jack Nugent and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Aerodynamics, Transonic categories.
Reduction Of Drag Due To Lift At Supersonic Speeds
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Author : Douglas Aircraft Company
language : en
Publisher:
Release Date : 1955
Reduction Of Drag Due To Lift At Supersonic Speeds written by Douglas Aircraft Company and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Aerodynamics, Supersonic categories.
$EVERAL TOPICS RELATING TO THE REDUCTION OF DRAG DUE TO LIFT AT SUPERSONIC SPEEDS ARE DISCUSSED. The distribution of camber for optimial loading of diamond planform wings and some low drag geometries for rectangular wings are determined. It appears that substantial drag reduction, through the use of spanwise distribution of camber, may be achieved only for low reduced aspect ratios, M2-1 AR. The distribution of lift throughout volumes of prescribed shape is considered and some optimum distributions found for certain cases. It is shown that optimum spatial distributions of lift arc generally not unique. The possibility of using biplanes is explored and it is concluded that for non-interfering biplanes (wings acting as isolated monoplanes) there is an inherent structural advantage which is the result of a scale effect for geometrically similar structures The preacnt status of means for drag reduction is surveyed and the direction for further study indicated.
Effect Of Some Section Modifications And Protuberances On The Zero Lift Drag Of Delta Wings At Transonic And Supersonic Speeds
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Author : Carl A. Sandahl
language : en
Publisher:
Release Date : 1954
Effect Of Some Section Modifications And Protuberances On The Zero Lift Drag Of Delta Wings At Transonic And Supersonic Speeds written by Carl A. Sandahl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Airplanes categories.
A Summary Of The Low Lift Drag And Longitudinal Trim Characteristics Of Two Versions Of An Interceptor Type Airplane As Determined From Flight Tests Of Rocket Powered Models At Mach Numbers Between 0 75 And 1 78
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Author : Willard S. Blanchard
language : en
Publisher:
Release Date : 1954
A Summary Of The Low Lift Drag And Longitudinal Trim Characteristics Of Two Versions Of An Interceptor Type Airplane As Determined From Flight Tests Of Rocket Powered Models At Mach Numbers Between 0 75 And 1 78 written by Willard S. Blanchard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with categories.
Effects Of Some Leading Edge Modifications Section And Plan Form Variations And Vertical Position On Low Lift Wing Drag At Transonic And Supersonic Speeds
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Author : Clement J. Welsh
language : en
Publisher:
Release Date : 1955
Effects Of Some Leading Edge Modifications Section And Plan Form Variations And Vertical Position On Low Lift Wing Drag At Transonic And Supersonic Speeds written by Clement J. Welsh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Aerodynamics, Supersonic categories.
Free-flight rocket-propelled model tests have been made to determine the effect of some wing geometry variables on low lift drag at Mach numbers from approximately 0.6 to 2.1. The pertinent results relate to 4- to 7-percent-thick 45 degree sweptback wings. At supersonic speeds, the wing drag was higher with the NACA 2-006 airfoil sections than with the NACA 65A006 airfoil sections particularly at the higher test Mach numbers where it was over 40 percent higher. Drooping the forward 20 percent of the wing 6 degrees increased the wing drag coefficient as much as 30 percent at supersonic speeds. Moving the wing vertically from the fuselage center line to the top of the fuselage increased the configuration drag substantially at supersonic speeds.
Effect On Drag Of Longitudinal Positioning Of Half Submerged And Pylon Mounted Douglas Aircraft Stores On A Fuselage With And Without Cavities Between
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Author : Sherwood Hoffman
language : en
Publisher: BiblioGov
Release Date : 2013-07
Effect On Drag Of Longitudinal Positioning Of Half Submerged And Pylon Mounted Douglas Aircraft Stores On A Fuselage With And Without Cavities Between written by Sherwood Hoffman and has been published by BiblioGov this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07 with categories.
The effect on drag of positioning symmetrically mounted Douglas Aircraft Company, Inc. stores in pairs on a parabolic fuselage of fineness ratio 10.0 has been determined by flight tests of rocket-propelled, zero-lift models through a range of Mach number from 0.9 to 1.8. The stores were mounted in half-submerged positions and on pylons and were tested in three longitudinal locations on the fuselage with the forward position being located at the maximum diameter of the fuselage. The effects on drag of removing the half-submerged stores or extending them outward on pylons also was investigated by tests of models with half-submerged-store cavities on the fuselage. Two pylons differing in airfoil section and thickness were tested at the forward position of the stores on the fuselage with cavities. The half-submerged stores gave the smallest drag increments, which were approximately equal regardless of their respective longitudinal locations. Removing the half-submerged stores to expose the cavities increased the drag increments from two to three times. For the pylon-mounted stores, the store in the midposition had less drag than in the forward or rear positions at supersonic speeds. Adding the half-submerged-store cavities to the pylon-mounted-store configurations reduced the drag at the rear position between Mach numbers 0.95 and 1.50 and increased the drag at the midposition throughout the speed range. Changing from the 6-percent-thick flat pylon to the 10-percent-thick airfoil pylon increased the total drag slightly above Mach number 1.10. Good agreement was obtain& between the experimental and theoretical interference drag coefficients for the pylon-mounted stores.
Drag Characteristics Obtained From Several Configurations Of The Modified X 15 2 Airplane Up To Mach 6 7
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Author : Lawrence C. Montoya
language : en
Publisher:
Release Date : 1970
Drag Characteristics Obtained From Several Configurations Of The Modified X 15 2 Airplane Up To Mach 6 7 written by Lawrence C. Montoya and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Low Lift Drag And Stability Data From Rocket Models Of A Modified Delta Wing Airplane With And Without External Stores At Mach Numbers From 0 8 To 1 36
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Author :
language : en
Publisher:
Release Date : 1953
Low Lift Drag And Stability Data From Rocket Models Of A Modified Delta Wing Airplane With And Without External Stores At Mach Numbers From 0 8 To 1 36 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with categories.