1. 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

2. HIMIL aerosol + trace gas sampling modular construction

3. contamination potential

4. contamination testing some data taken analysis in progress

5. configurations for ProgSci had to install long runs of tubing

6. routing of tubing from HIMIL to racks

7. estimated tubing lengths

8. effects of tubing length

9. Paul Baron’s spreadsheet

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

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

12. instrument & exhaust pressures

13. 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