EML 4905 Ethics and Design Project Organization Department of Mechanical and Materials Engineering Florida International University
04/21/2015 US Air Force VHg Mark II Florida International University Jason CampbellKenny CandelarioCinthya EnriquezMichael Fisher
No Thermal controllability exists for test chamber VHG Mark I is unsafe and inefficient. US Air Force VHg Mark II Florida International University 04/21/2015
Cooling controllability -35°C Ideal -25°C Required Commercially available components 2” thick material stack clearance US Air Force VHg Mark II Florida International University 04/21/2015
Shock test results determine storage and transportation procedures for munition components. Safety and efficiency require major improvements Thermal conditions can impact reliability of fuses. US Air Force VHg Mark II Florida International University 04/21/2015
Funded by Eglin Air Force Base Upgrade Very High-G Mark I. Focus on Thermal Controllability, and Carriage Yoke upgrade. US Air Force VHg Mark II Florida International University 04/21/2015
Portable tester that produces steel on steel impacts. Designed and Manufactured in the years 1966 to Testing ordnance components associated with Arming, fuzing and safing functions. US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University 04/21/2015
Deliver a peak shock of 80, ,000g’s 5-10lb test specimen 40 microseconds test duration Recovery time less than 3 minutes 1/4” steel safety shield US Air Force VHg Mark II Florida International University 04/21/2015
Austenitic Stainless Steels Great resistance to cryogenic temperatures FCC > BCC Tightly packed particles US Air Force VHg Mark II Florida International University 04/21/2015
Ranque – Hilsch Tube Uses compressed air only No moving components Not bulky Capable of extreme, cold temps Instant US Air Force VHg Mark II Florida International University 04/21/2015
Non-Porous Resists Mold Frost Build Up (-182°C to 104°C) ¾” thick R-Value = 3 US Air Force VHg Mark II Florida International University Reduces heat transfer Prevents condensation Closed-cell sheet insulation 04/21/2015
Methodology applied to Carriage Yoke upgrade Setup Reduction External vs. Internal Tasks Flexibility of operations “Pull-Type” Manufacturing offers control of variables US Air Force VHg Mark II Florida International University 04/21/2015
The federal requirement for using compressed air OSHA ; (b); ASME EA Eye Safety OSHA ANSI Z87.1 – 2010 US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University Scope of the design Liquid Nitrogen available Material for heating/cooling Principle behind heating coils Cycling liquid through tubes Convective cooling From BeverageFactory.com 304 Stainless Steel 04/21/2015
US Air Force VHg Mark II Florida International University New scope Only compressed gas available Nitrogen or Air Principle behind air cans to freeze water Gas expansion chamber Pressurized nitrogen through nozzle No moisture Possible use of Labyrinth nozzle for lower cooling temps 04/21/2015
US Air Force VHg Mark II Florida International University Re-Design to Lower Section of Yoke Pros: Less parts to be re-designed Cons: Height Deficiency (2” Mat. Stack) Protruding Fixture 04/21/2015
US Air Force VHg Mark II Florida International University Re-Design to Upper & Lower Sections of Yoke Pros: Compact Design Height Clearance Achieved Safety 1 min. Cycle Time Reduction Cons: More parts to be re-designed 04/21/2015
US Air Force VHg Mark II Florida International University Shock loads negligible to Carriage Yoke Weight load from Interior Chamber Assembly Max. Von Mises Stress: 7.08 Mpa Yield Strength: MPa Max. Deflection: mm Factor of Safety: /21/2015
US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University 3D Printed using PLA Top, bottom and material stack fixture Contracted out to “Make-It Studio” Functional Model 04/21/2015
US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University 04/21/2015 Best Performance
US Air Force VHg Mark II Florida International University 04/21/2015 Unstable Air Flow Not Enough Air Flow
Reduce risk of undetonated ordnance Incorporate English and SI units Multilingual user manual and warning labels US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University Safety Equipment: Safety Glasses Welding Gloves Safe Clearance Space 04/21/2015
Insulation enclosure is fiber free and environmental friendly 3D printed carriage yoke and material stacks are made out of PLA (Polylactic acid filament), Biodegradable material, which is commonly made from corn starch or sugar cane. Compressed Air instead of liquid nitrogen, nitrogen gas or other harmful substance that was not safe to use and needed to be properly contained US Air Force VHg Mark II Florida International University 04/21/2015
Group 4 Materials/Manufacturing Budget Goal: $ Cooling System Total: $ Vortex Tube Spot Cooler Couplings/Hoses/Generators Carriage Yoke Prototype Total: $ US Air Force VHg Mark II Florida International University 04/21/2015
Overcome any and all obstacles. Enjoy and embrace this experience. Ability to apply all skills on a large-scale project. Collaboration between multiple teams. Improve and challenge our Engineering skills on a global scale. Correspondence with clients US Air Force VHg Mark II Florida International University 04/21/2015
US Air Force VHg Mark II Florida International University MonthSept.Oct.Nov.Dec.Jan.Feb.Mar.Apr. Research Design Calculations Simulation Cost Analysis Assembly Testing 04/21/2015
US Air Force VHg Mark II Florida International University Function/Team MemberJasonKennyCinthyaMichael SolidWorks/Simulations Cooling System Damping Material Stacks Manufacturing/Testing Research System Efficiency Cost Analysis Main Role Supporting Role 04/21/2015
US Air Force VHg Mark II Florida International University Cooling System: Temperature Difference of 50°C or Greater Achieved Commercially Available Components Recommended Lab Environment at < 77°F Carriage Yoke: Safety Efficiency (1 min. Cycle Time Reduction) 04/21/2015
US Air Force VHg Mark II Florida International University Integrate to existing system Air compressor LabView Additional Thermocouple Expand Vortex Tube Capabilities Heating and cooling 04/21/2015