HIAPER Modular Inlets (HIMIL) & Instrument Exhaust System - Dave Rogers - Outline HIMIL description contamination testing re-install HIMIL to different.

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Presentation transcript:

HIAPER Modular Inlets (HIMIL) & Instrument Exhaust System - Dave Rogers - Outline HIMIL description contamination testing re-install HIMIL to different locations particle passing efficiencies instrument & exhaust pressures June 2006

HIMIL aerosol + trace gas sampling modular construction

contamination potential

contamination testing some data taken analysis in progress

configurations for ProgSci had to install long runs of tubing

routing of tubing from HIMIL to racks

estimated tubing lengths

effects of tubing length

Paul Baron’s spreadsheet

Estimating particle passing efficiency FLUENT modeling  flow field  aspiration efficiency

flow modeling – in progress 20,000 ft altitude, air speed 164 m s -1 velocity at the inlet face ~230 m -1

instrument & exhaust pressures

next? derive size-dependent corrections of aerosol particle concentration based on pressure & tubing length analyze for contamination evidence add tube inside HIMIL & run FLUENT for range of flight conditions use FLUENT to estimate passing efficiencies