국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Deployment of a Pressure Sensitive Paint System for Measuring Global Surface Pressures on Rotorcraft Blades in Simulated Forward Flight: Preliminary PSP Results from Test 581 in the 14- by 22-Foot Subsonic Tunnel
저자	Watkins, Anthony Neal;; Leighty, Bradley D.;; Lipford, William E.;; Wong, Oliver D.;; Goodman, Kyle Z.;; Crafton, James;; Forlines, Alan;; Goss, Larry;; Gregory, James W.;; Juliano, Thomas J.
Keyword	BLADE TIPS;; FLIGHT SIMULATION;; FLOW DISTRIBUTION;; HORIZONTAL FLIGHT;; PRESSURE MEASUREMENT;; PRESSURE SENSITIVE PAINTS;; PRESSURE SENSORS;; PULSED LASERS;; ROTORS;; TURBINE WHEELS
URL	http://hdl.handle.net/2060/20110023760
보고서번호	NASA/TM-2011-217316
발행년도	2011
출처	NTRS (NASA Technical Report Server)
ABSTRACT	This report will present details of a Pressure Sensitive Paint (PSP) system for measuring global surface pressures on the tips of rotorcraft blades in simulated forward flight at the 14- x 22-Foot Subsonic Tunnel. The system was designed to use a pulsed laser as an excitation source and PSP data was collected using the lifetime-based approach. With the higher intensity of the laser, this allowed PSP images to be acquired during a single laser pulse, resulting in the collection of crisp images that can be used to determine blade pressure at a specific instant in time. This is extremely important in rotorcraft applications as the blades experience dramatically different flow fields depending on their position in the rotor disk. Testing of the system was performed using the U.S. Army General Rotor Model System equipped with four identical blades. Two of the blades were instrumented with pressure transducers to allow for comparison of the results obtained from the PSP. This report will also detail possible improvements to the system.