An in-flight data system for chordwise turbulence measurements has been developed by NASA to investigate laminar flow stability in the presence of acoustic disturbances. Flight tests were performed with an OV-1B turboprop with a JT-15D engine in order to establish the feasibility of utilizing natural laminar flow (NLF) nacelles to reduce drag and to determine the extent of NLF over a range of controlled acoustic frequencies. The data system consisted of PCM and FM data acquisition subsystems, dual wide-band magnetic flight recorders, and acoustic generating and measuring subsystems.
An in-flight data system for chordwise turbulence measurements during acoustic disturbances
International Instrumentation Symposium ; 1987 ; Las Vegas, NV, United States
01.01.1987
Aufsatz (Konferenz)
Keine Angabe
Englisch