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Vibration considerations for cryogenic tanks using glass bubbles insulation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fesmire, James E. Sass, Jared P. Werlink, Rudolph J. |
| Copyright Year | 2011 |
| Description | The use of glass bubbles as an efficient and practical thermal insulation system has been previously demonstrated in cryogenic storage tanks. One such example is a spherical, vacuum-jacketed liquid hydrogen vessel of 218,000 liter capacity where the boiloff rate has been reduced by approximately 50 percent. Further applications may include non-stationary tanks such as mobile tankers and tanks with extreme duty cycles or exposed to significant vibration environments. Space rocket launch events and mobile tanker life cycles represent two harsh cases of mechanical vibration exposure. A number of bulk fill insulation materials including glass bubbles, perlite powders, and aerogel granules were tested for vibration effects and mechanical behavior using a custom design holding fixture subjected to random vibration on an Electrodynamic Shaker. The settling effects for mixtures of insulation materials were also investigated. The vibration test results and granular particle analysis are presented with considerations and implications for future cryogenic tank applications. A thermal performance update on field demonstration testing of a 218,000 L liquid hydrogen storage tank, retrofitted with glass bubbles, is presented. KEYWORDS: Glass bubble, perlite, aerogel, insulation, liquid hydrogen, storage tank, mobile tanker, vibration. |
| File Size | 5870788 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110014398 |
| Archival Resource Key | ark:/13960/t3kx0d23h |
| Language | English |
| Publisher Date | 2011-06-13 |
| Access Restriction | Open |
| Subject Keyword | Propellants And Fuels Cycles Insulation Life Durability Thermal Insulation Glass Exposure Vacuum Temperature Effects Cryogenics Field Tests Vibration Effects Storage Tanks Random Vibration Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
