Design and development of a helium injection system to improve external leakage detection during liquid nitrogen immersion tests

Physics & Astronomy

• submerging 80%
• liquid nitrogen 80%
• leakage 65%
• helium 62%
• injection 57%
• boiling 44%
• assemblies 23%
• ambient temperature 22%
• hydrogen engines 21%
• cryogenics 21%
• baths 20%
• liquid oxygen 16%
• rocket engines 15%
• visual observation 15%
• liquid hydrogen 14%
• sizing 13%
• temperature 13%
• cryogenic temperature 12%
• seats 12%
• operating temperature 11%
• counters 9%
• assembly 9%
• masks 9%
• thermodynamic properties 9%
• flow velocity 9%
• bubbles 8%
• pumps 8%
• saturation 7%
• evaluation 7%
• liquids 5%

Engineering & Materials Science

• Liquid nitrogen 100%
• Helium 88%
• Cryogenics 35%
• Boiling liquids 34%
• Temperature 31%
• Testing 23%
• Liquids 22%
• Hydrogen engines 17%
• Boiling point 14%
• Leakage (fluid) 13%
• Rocket engines 12%
• Masks 10%
• Thermodynamic properties 10%
• Oxygen 9%
• Pumps 8%
• Flow rate 8%
• Control systems 6%

Chemistry

• Nitrogen 47%
• Liquid 42%
• Cryogenics 37%
• Boiling 33%
• Boiling Point 12%
• Valve 12%
• Bubble 11%
• Pump 10%
• Thermodynamic Property 10%
• Flow Kinetics 8%
• Hydrogen 5%