Fast Responding Pressure-Sensitive Paint for Large-Scale Wind Tunnel Testing, Phase II

Metadata Updated: May 2, 2019

The proposed work focuses on implementing fast-response pressure-sensitive paint for measurements of unsteady pressure in rotorcraft applications. Significant rotorcraft problems such as dynamic stall, rotor blade loads in forward flight, and blade-vortex interaction all have significant unsteady pressure oscillations that must be resolved in order to understand the underlying physics. Installation of pressure transducers is difficult and expensive on rotorcraft models, and the resulting data has limited spatial resolution. Application of a fast-responding pressure-sensitive paint should provide unsteady surface pressure distributed over the blade surface. Fast PSP measurements have been demonstrated at NASA Langley on a 2-meter rotor model in hover and in forward flight by the ISSI/OSU team using two single camera systems. More recently, measurements were conducted in forward flight using multiple cameras and lasers at two azimuthal positions. We propose expanding this system for production testing. During Phase I, a lens controller + pan/tilt stages with Ethernet control and presets was developed. This device will be used to control the field of view of the system remotely. Mitigation of motion blur at the tip was demonstrated using a galvanic mirror. A temperature measurement capability using TSP was added to the system to allow temperature corrections to be applied to the PSP data. Fast efficient data processing software that included automatic image registration and scripting of repetitive operations was investigated to speed up data processing. These new tools and software will be integrated into the data acquisition package and data processing package to improve accuracy and productivity during testing.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_18428
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 7b1fb8cf-ebbd-4ee7-9401-1b8028e96740
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-01-01
Homepage URL https://techport.nasa.gov/view/18428
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 14429cf44632ed1d131dbc6cf1575ca3bb9ddfa2
Source Schema Version 1.1

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