Three-component velocity and acceleration measurement using FLEET

Paul M. Danehy, Brett F. Bathel, Nathan Calvert, Arthur Dogariu, Richard P. Miles

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

The femtosecond laser electronic excitation and tagging (FLEET) method has been used to measure three components of velocity and acceleration for the first time. A jet of pure N2 issuing into atmospheric pressure air was probed by the FLEET system. The femtosecond laser was focused down to a point to create a small measurement volume in the flow. The long-lived lifetime of this fluorescence was used to measure the location of the tagged particles at different times. Simultaneous images of the flow were taken from two orthogonal views using a mirror assembly and a single intensified CCD camera, allowing two components of velocity to be measured in each view. These different velocity components were combined to determine three orthogonal velocity components. The differences between subsequent velocity components could be used to measure the acceleration. Velocity accuracy and precision were roughly estimated to be ±4 m/s and ±10 m/s respectively. These errors were small compared to the ~100 m/s velocity of the subsonic jet studied.

Original languageEnglish (US)
Title of host publicationAIAA AVIATION 2014 - 30th AIAA Aerodynamic Measurement Technology and Ground Testing Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102875
DOIs
StatePublished - 2014
EventAIAA AVIATION 2014 - 30th AIAA Aerodynamic Measurement Technology and Ground Testing Conference - Atlanta, GA, United States
Duration: Jun 16 2014Jun 20 2014

Publication series

NameAIAA AVIATION 2014 - 30th AIAA Aerodynamic Measurement Technology and Ground Testing Conference

Other

OtherAIAA AVIATION 2014 - 30th AIAA Aerodynamic Measurement Technology and Ground Testing Conference
CountryUnited States
CityAtlanta, GA
Period6/16/146/20/14

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

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