The Resource Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion, by Lloyd H. Smith [and] Robert H. Nunn

Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion, by Lloyd H. Smith [and] Robert H. Nunn

Label
Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion
Title
Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion
Statement of responsibility
by Lloyd H. Smith [and] Robert H. Nunn
Creator
Contributor
Subject
Language
eng
Summary
An experimental investigation was conduct3ed to determine the effect of a uniform pitching motion on a slender axisymmetric body while undergoing large excursions in angle of attack. Force and moment measurements were obtained for a slender tangent-ogive/cylindrical body over a range of Reynolds numbers from 5 x 10 to 1.4 x 10 while varying the angle of attack from zero to 90 degrees and the pitch rate between zero and 281 degrees per second. Smoke flow visualization studies were used as an aid in assessing wake vortex transitions. The results of the investigation show that there is an increment of normal force directly attributable to the uniform pitching motion. The incremental increase in the normal force is sufficient to cause significant errors in calculating body damping derivatives from static force measurements. Distinct wake vortex transitions at approximately 20, 50, and 65 degrees were observed. The effect of a uniform pitching motion shifts the angle of attack at which these wake vortex transitions occur, and can reduce the abruptness of those transitions. (
Cataloging source
AD#
http://library.link/vocab/creatorDate
1924-
http://library.link/vocab/creatorName
Smith, Lloyd H.
Government publication
federal national government publication
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • technical reports
http://library.link/vocab/relatedWorkOrContributorName
  • Nunn, R. H.
  • Naval Postgraduate School (U.S.)
http://library.link/vocab/subjectName
  • Aerodynamics
  • Vortex-motion
  • Wakes (Fluid dynamics)
Type of report
Technical report; 1975.
Label
Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion, by Lloyd H. Smith [and] Robert H. Nunn
Link
Instantiates
Publication
Note
  • Title from cover
  • "February 1975"--Cover
  • "NPS-59Nn75021"--Cover
  • Author(s) subject terms: Aerodynamics, missile, high angle-of-attack, vortex wake
Bibliography note
Includes bibliographical references (p. 95-97)
Extent
1 online resource (99 pages
Form of item
online
Governing access note
"Approved for public release; distribution unlimited."
Other physical details
illustrations)
Specific material designation
remote
System control number
(OCoLC)1038744832
Label
Aerodynamic characteristics of an axisymmetric body undergoing a uniform pitching motion, by Lloyd H. Smith [and] Robert H. Nunn
Link
Publication
Note
  • Title from cover
  • "February 1975"--Cover
  • "NPS-59Nn75021"--Cover
  • Author(s) subject terms: Aerodynamics, missile, high angle-of-attack, vortex wake
Bibliography note
Includes bibliographical references (p. 95-97)
Extent
1 online resource (99 pages
Form of item
online
Governing access note
"Approved for public release; distribution unlimited."
Other physical details
illustrations)
Specific material designation
remote
System control number
(OCoLC)1038744832

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