NDLI: The effect of blunt-trailing-edge modifications on the high-speed stability and control characteristics of a swept-wing fighter airplane

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The effect of blunt-trailing-edge modifications on the high-speed stability and control characteristics of a swept-wing fighter airplane

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1954
Description	An investigation was conducted on a 35 deg swept-wing fighter airplane to determine the effects of several blunt-trailing-edge modifications to the wing and tail on the high-speed stability and control characteristics and tracking performance. The results indicated significant improvement in the pitch-up characteristics for the blunt-aileron configuration at Mach numbers around 0.90. As a result of increased effectiveness of the blunt-trailing-edge aileron, the roll-off, customarily experienced with the unmodified airplane in wings-level flight between Mach numbers of about 0.9 and 1.0 was eliminated, The results also indicated that the increased effectiveness of the blunt aileron more than offset the large associated aileron hinge moment, resulting in significant improvement in the rolling performance at Mach numbers between 0.85 and 1.0. It appeared from these results that the tracking performance with the blunt-aileron configuration in the pitch-up and buffeting flight region at high Mach numbers was considerably improved over that of the unmodified airplane; however, the tracking errors of 8 to 15 mils were definitely unsatisfactory. A drag increment of about O.OOl5 due to the blunt ailerons was noted at Mach numbers to about 0.85. The drag increment was 0 at Mach numbers above 0.90.
File Size	2397575
Page Count	56
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19650075959
Archival Resource Key	ark:/13960/t82k0tm4d
Language	English
Publisher Date	1954-05-26
Access Restriction	Open
Subject Keyword	Aircraft Design, Testing And Performance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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