1. Optical Mass Gauging System for Use in Microgravity Environments Isaiah Franka Jordan Rath Michael Yeager Abby Wilbourn Brian Lee Azer Yalin

2. Optical Mass Gauging System 2 Existing fluid measurement systems require the use of costly, wasteful and typically ineffective methods to approximate fluid volumes in zero gravity environments. Dissatisfaction with current methods has revealed a need for a more effective and efficient measurement systems. Laser interferometry is a theoretical method of measuring fluid volumes that offers advantages such as reduced weight and increased durability during launch while still providing functionality in a microgravity environment. Project Description

3. Optical Mass Gauging System 3 Mach-Zehnder Interferometer Divergence and Convergence of a beam of light

4. Optical Mass Gauging System 4 Interference Constructive Destructive Intermediate

5. Optical Mass Gauging System 5 Mach-Zehnder Interferometer Tabletop Setup

6. Optical Mass Gauging System 6 Fringe Calculations

7. Optical Mass Gauging System 7 Fringe Calculations

8. Optical Mass Gauging System 8 Piston Calculations

9. Optical Mass Gauging System 9 Fringe to Mass Conversion ∆m → V liquid =V tank - V tank ullage

10. Optical Mass Gauging System 10 System Layout

11. Optical Mass Gauging System 11 Mechanical System Design

12. Optical Mass Gauging System 12 Mechanical System

13. Optical Mass Gauging System 13 Electrical System Data Storage 32Mbit memory Logic Arduino Nano Master Chip Arduino Duelimanove Linear Actuator Driver

14. Optical Mass Gauging System 14 Testing-Vibrational Environmental Testing Characteristics specified by Wallops: Wallops Flight Facility’s Environmental Test for the RockSat Program has two components: The Sine Test and the Random Test. Sine Test: The Sine Test will vibrate the payload along the thrust axis at no more than 3 in/s. These rates will occur between the frequencies of 10 and 144 Hz. The thrust axis will also see 7G from 144 to 2000 Hz. The sweep rate is 4 octaves per minute. Random Test: The random test will be completed in all three axes: thrust, lateral, and 90 degrees from lateral. The test will begin at lower levels and gradually increase to full level. Each axis will see 20 seconds at full level. Thrust Full Level10 G rms at 0.051 G 2 /Hz from 20-2000 Hz Lateral and Lateral 90 Full Level: 7.6 G rms at 0.029 G 2 /Hz from 20-2000Hz

15. Optical Mass Gauging System 15 Testing-Vibrational Sine Test Random Test Thrust Full Level  10 G rms at 0.051 G 2 /Hz from 20-2000 Hz Lateral and Lateral 90 Full Level  7.6 G rms at 0.029 G 2 /Hz from 20-2000Hz

16. Optical Mass Gauging System 16 Lessons Learned 1.Everything will take longer then expected 2.Electronics should be started as early as possible especially if none of the team members have experiences with programing 3.A gap between the ideal world and the real world exist

17. Optical Mass Gauging System 17 Questions?