NASA Scientific and Technical Aerospace Reports

SCIENTIFIC AND TECHNICAL
AEROSPACE REPORTS
A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 44, JANUARY 13, 2006
01
AERONAUTICS (GENERAL)
Includes general research topics related to manned and unmanned aircraft and the problems of flight within the Earth’s atmosphere. Also
includes manufacturing, maintenance, and repair of aircraft. For specific topics in aeronautics, see categories 02 through 09. For
information related to space vehicles see 12 Astronautics.
20060002359 Federal Aviation Administration, Washington, DC USA
Proficiency and the Private Pilot
Strock, D.; January 1995; 10 pp.; In English
Report No.(s): PB2006-102155; FAA-P-8740-36; AFS-810(1995); No Copyright; Avail.: CASI: A02, Hardcopy
The purpose of this series of Federal Aviation Administration (FAA) Aviation Safety Program publications is to provide
the aviation community with safety information that is informative, handy, and easy to review. Staying proficient is a real
challenge for most pilots. In order to retain your skills and stay current in the knowledge of your aircraft it requires time,
money and suitable weather.
NTIS
Abilities; Aircraft Safety; Education; Flight Safety
02
AERODYNAMICS
Includes aerodynamics of flight vehicles, test bodies, airframe components and combinations, wings, and control surfaces. Also includes
aerodynamics of rotors, stators, fans, and other elements of turbomachinery. For related information see also 34 Fluid Mechanics and
Thermodynamics.
20060001918 George Washington Univ., Washington, DC USA
Large-Eddy Simulation of the Tip-Flow of a Rotor in Hover
Mittal, Rajat; Oct. 28, 2005; 11 pp.; In English
Contract(s)/Grant(s): DAAD19-01-1-0704
Report No.(s): AD-A440555; ARO-42877-EG.2; No Copyright; Avail.: Defense Technical Information Center (DTIC)
The blade-tip vortex is one of the most important aerodynamic feature of a helicopter rotor wake, The strength, size,
location and orientation of the tip vortices affect the blade loads and rotor performance. The overall goal of the current project
was to develop a large-eddy simulation (LES) capability to simulate the rotor-tip vortex and use these simulations to perform
a detailed analysis of the dynamics of this flow, The specific objectives of this research project are (1) Develop a LES based
computational approach for simulating the tip flow of a rotor in hover. (2) Validate the computational approach against PIV
measurements of a hovering rotor (3) Use the solver to gain insight into the formation, structure and downstream evolution
of the tip-vortex and the dynamics of the turbulence associated with the tip vortex.
DTIC
Aerodynamics; Hovering; Large Eddy Simulation; Rotors
20060002337 Nanjing Univ. of Aeronautics and Astronautics, Nanjing, China
Journal of Nanjing University of Aeronautics & Astronautics, Volume 37, Number 5, October 2005
Dewang, L.; Oct. 2005; 146 pp.; In Chinese
Report No.(s): PB2006-100639; Copyright; Avail.: National Technical Information Service (NTIS)
Contents include the following: Anisotropic GMR Effect in Si/Co/Cu/Co Multilayers and Its Correlation with
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