NASA cryogenic fluid management space experiment efforts

Glover, Daniel

doi:10.2514/6.1991-3538

Cited by 4 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to reactivity with oxidants, fuel density is also of vital importance to determine the higher specific impulse and fuel loading in rockets (32). We further estimated the density of ionic liquids with these 15 anions, among which MHT ionic liquids have the highest density of 1.24 g/cm 3 and meet all the above requirements of hypergolic additives. As a result, the genome database and screening procedure based on high-performance hypergolic additives have been completed.…”

Section: Resultsmentioning

confidence: 99%

“…The liquid range is larger than 170°C. Compared with UDMH at 0.79 g/cm 3 and BmimDCA at 1.06 g/cm 3 , MHT ionic liquids exhibit densities that are considerably higher than 1.22 g/cm 3 (Table 1). This result is consistent with previous theoretical predictions of density.…”

Section: Resultsmentioning

confidence: 99%

“…The 1,2,3-trimethylimidazolium cation is nearly planar. The density of crystal 1 is 1.309 g/cm 3 , with no residual solvents or disorder. The thermal stability and detonation properties of MHT ionic liquids were studied (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…For instance, the Atlas-Centaur rocket (liquid H 2 /O 2 , to Mars and Venus) and the Long March 3B rocket [UDMH (unsymmetric dimethyl hydrazine)/ N 2 O 4 , to the moon]. (3,4) However, some of the high-performance rocket propellants have shortcomings such as highly toxic and decomposable fuels, viz., UDMH, or that they can only exist at an extremely low temperature of liquid H 2 (5). Serious accidents have happened over the history of spaceflight (6), causing severe pollution and billions of dollars in losses (7).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Designing high-performance hypergolic propellants based on materials genome

et al. 2020

View full text Add to dashboard Cite

A new generation of rocket propellants for deep space exploration, ionic liquid propellants, with long endurance and high stability, is attracting more and more attention. However, a major defect of ionic liquid propellants that restricts their application is the inadequate hypergolic reactivity between the fuel and the oxidant, and this defect results in local burnout and accidental explosions during the launch process. We propose a visualization model to show the features of structure, density, thermal stability, and hypergolic activity for estimating propellant performances and their application abilities. This propellant materials genome and visualization model greatly improves the efficiency and quality of developing high-performance propellants, which benefits the discovery of new advanced functional molecules in the field of energetic materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Designing high-performance hypergolic propellants based on materials genome

et al. 2020

View full text Add to dashboard Cite

show abstract

“…One of the key requirements to enable long-term space exploration missions is the effective management of cryogenic propellants in a microgravity environment. Cryogenic fluid management in weightlessness provides a number of fundamental physical challenges, such as the storage of fluids, the transfer of propellant, and an accurate monitoring and gauging of fluids (Lacovic et al, 1968;Glover, 1991;Dodge, 2000;Donabedian, 2003;Motil et al, 2007;Chato, 2009;Doherty et al, 2010;Muratov et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Ultrasonic Waves for Bubble Control in Cryogenic Fuel Tanks

Suñol

Ochoa

Granados

et al. 2020

Microgravity Sci. Technol.

View full text Add to dashboard Cite

An efficient long-term storage of cryogenic pro-1 pellants is a challenge for future space exploration missions. 2The vapour bubbles formed as a result of boil-off in the tank 3 walls can generate foam structures, which could be hazardous 4 in different operations in orbit. A recently proposed approach 5 to control the dynamics of bubbles is based on the generation 6 of an acoustic field by means of a piezoelectric transducer.7This technology needs to be validated at cryogenic tempera-8 tures in order to be applicable in space. In this perspective, 9 different piezoelectric elements and matching layer materials 10 have been tested at cryogenic temperatures to assess their 11 performance at such environmental conditions. We consider 12 the use of soft PZT piezoceramics coupled with an epoxy 13 resin as the matching layer. Experimental data reveal that 14 epoxy resin-based acoustic matching layers exhibit a linear 15 increase in the transmittance of the acoustic amplitude at 16 cryogenic conditions. The peak-to-peak amplitude increases 17 as temperature decreases up to a factor of 1.6. This result 18 opens the possibility of generating and transmitting acoustic 19 waves at cryogenic temperatures, which could be used in 20 the recently proposed technology to control the dynamics of 21 vapour bubbles in cryogenic fuel tanks.

show abstract

Bibliography

2016

Liquid Acquisition Devices for Advanced in-Space Cryogenic Propulsion Systems

View full text Add to dashboard Cite

NASA cryogenic fluid management space experiment efforts

Cited by 4 publications

References 1 publication

Designing high-performance hypergolic propellants based on materials genome

Designing high-performance hypergolic propellants based on materials genome

Performance Assessment of Ultrasonic Waves for Bubble Control in Cryogenic Fuel Tanks

Bibliography

Contact Info

Product

Resources

About