NDLI: Wind tunnel tests on a tail-less swept wing span-distributed cargo aircraft configuration

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Wind tunnel tests on a tail-less swept wing span-distributed cargo aircraft configuration

Content Provider	NASA Technical Reports Server (NTRS)
Author	Rao, D. M. Huffman, J. K.
Copyright Year	1978
Description	The configuration consisted of a 30 deg -swept, untapered, untwisted wing utilizing a low-moment cambered airfoil of 20 percent streamwise thickness designed for low wave drag at M = 0.6, C sub L = 0.4. The tests covered a range of Mach numbers 0.3 to 0.725 and chord Reynolds number 1,100,000 to 2,040,000, angles of attack up to model buffet and sideslip angles + or - 4 deg. Configuration build up, wing pod filleting, airfoil modification and trailing edge control deflection effects were briefly investigated. Three wing tip vertical tail designs were also tested. Wing body filleting and a simple airfoil modification both produced increments to maximum lift/drag ratio. Addition of pods eliminated pitch instability of the basic wing. While the magnitude of these benefits probably was Reynolds number sensitive, they underline the potential for improving the aerodynamics of the present configuration. The cruise parameter (product of Mach number and lift/drag ratio) attained a maximum close to the airfoil design point. The configuration was found to be positively stable with normal control effectiveness about all three axes in the Mach number and C sub L range of interest.
File Size	11845837
Page Count	139
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780024105
Archival Resource Key	ark:/13960/t72v7bp73
Language	English
Publisher Date	1978-09-01
Access Restriction	Open
Subject Keyword	Aerodynamics Aircraft Stability Swept Wings Body-wing Configurations Reynolds Number Spanloader Aircraft Wind Tunnel Tests Control Stability Cargo Aircraft Thickness Ratio Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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