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Cohesion and Adhesion in Space of H 2 O

Cohesion and Adhesion in Space of H 2 O. Team CASH 2 O : Donald Durgan, Afton-Dawn Johnson, Jennifer Meyer, Eric Lovejoy. Advisors: Dr. Sean S. Kohles, Dr. Mark M. Weislogel. Reduced Gravity Flight Program. Submit microgravity experiment proposal.

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Cohesion and Adhesion in Space of H 2 O

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  1. Cohesion and Adhesion in Space of H2O Team CASH2O : Donald Durgan, Afton-Dawn Johnson, Jennifer Meyer, Eric Lovejoy Advisors: Dr. Sean S. Kohles, Dr. Mark M. Weislogel

  2. Reduced Gravity Flight Program • Submit microgravity experiment proposal. • Experiment must require microgravity environment. • Proposal must include an outreach plan. • If accepted submit Test Equipment Data Package (TEDP). Begin any scheduled outreach. • Head to Johnson Space Center and perform experiment aboard low-g aircraft.

  3. PSU teams 2003 and 2004 2003 Mechanical Engineering (Team ALBERT) 2004 Mechanical Engineering Team 2004 Off Planet Architecture Team

  4. Our Experiment • Objective is to study the ability of moving water droplets to adhere to surfaces of unique geometries. • Aimed for a velocity and drop size that would theoretically result in some rebounding and some adherence. • Looking for surface geometries that aid in adherence. • Requires microgravity so that effects during collisions from surface tension forces are not overwhelmed by gravity.

  5. A C D E F B Apparatus A – Laptop B – Syringe Pump C – Lexan Polycarbonate Panel D – 80/20 Aluminum Frame E – Axle F – Video Camera

  6. The Experience • Flight Week • Dinner with NASA and Boeing • Tour of Neutral Buoyancy Lab and • Johnson Space Center • Presentation by astronaut David Wolf • Test Readiness Review • Physiological Training and Hypobaric • Chamber

  7. Experimental Environment Flight Trajectory • Flight Description • 2 hours • 30 Zero-g parabolas plus one Lunar and one Martian parabola • 15 - 25 seconds of microgravity per parabola  45 Nose Low

  8. What Went Wrong? • The Problem • In Normal Earth Gravity Pump Works • In Flight, Pump Works • During Parabolas, Pump Does Not Work • Back on Earth, Pump Works

  9. What Went Wrong? • The Fix • Disconnect Keypad of Syringe Pump • Hardwired a Switch to Syringe Pump • Cut Hole in Lexan to Allow Manual • Plunge of Syringe

  10. Special ThanksNational Aeronautics and Space Administration, NASA Oregon Space Grant Tyco Electronics CECS Tap plastics Dr Mark WeislogelDr Faryar Etesami Dr Sean S Kohles Dr Derek Tretheway Molly Meyer Joni HeveronJake VanderhaarAaron Scates Our Parents

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