1. Leakage Test Stand Improvement Marie Rohrbaugh
Mission Statement: Reduce the effect of fixture leakage on leakage data

2. Background Situation: Goal: External Leakage Testing Important Test
Should be very near zero
Goal:
Reduce the effect of fixture leakage on test data

3. Highly Concentrated Area
Vent Between O-rings to eliminate pressure build- up
Pulse Purge

4. Large Surface Area Large o-ring seals 2 holes 180 degrees apart
Pressurize one side with Nitrogen
Nitrogen In
Vacuum Chamber

5. Function Tree

6. Block Diagram

7. Voice of the Engineer

9. Constraints Use of Nitrogen Gas 1 psi Vacuum 24V signal power supply
Class10,000 Clean Room
SAFE USERS

10. Necessary Tasks Change Plug Design (Interface with the can)
Pneumatics Design/Layout
FMEA
Software Controls
Moog will provide Manufacturing
Testing
Maintenance and Training Plans

11. Benchmarks
Vented

12. Brainstorming Pulse with Nitrogen to both
Large O-rings release to ambient on opposite side
Vent hole toggles between Nitrogen and Vacuum

13. Brainstorming Always a Constant flow of Nitrogen to Large Orings
Vent hole Toggles between Vacuum and Nitrogen

14. Brainstorming Constant Flow to large O-ring
Vent hole Toggles between pressurized Nitrogen and Ambient

15. Brainstorming Constant flow of Nitrogen to Large O-rings
Vent Hole has a constant Vacuum

16. Staffing

17. Feedback
Improve Block Diagram to include a detailed interface with the AGT and the two systems
Team Must Understand functionality
Constraints vs. Functions
If team believes another way is better, “ OK”
Timeline
IP considerations: We will work it all out over summer
Drawings
Test Specifications

18. Questions??