Download Advances in Cryogenic Engineering: Proceedings of the 1958 by G. R. Kinney (auth.), K. D. Timmerhaus (eds.) PDF

By G. R. Kinney (auth.), K. D. Timmerhaus (eds.)

ISBN-10: 1475705425

ISBN-13: 9781475705423

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Additional resources for Advances in Cryogenic Engineering: Proceedings of the 1958 Cryogenic Engineering Conference

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Materials proposed for use in critical dynamic applications must not detonate during 20 trials at 70 ft-Ib. Materials falling in between these levels are selected on the basis of the hazardous potential expected for the-ir intended uses and are evaluated thoroughly under sirnulated service conditions. We do not measur e the intensity of pos itive r eactions. We have never established a true pattern to study reproducibility. Such a study would probably be more meaningful if conducted at a level where 50 per cent positive reactions occur.

The results obtained are quantitative within approximately : 5 ft-lbs. The general acceptance level established at Aerojet is 20 trials at 60 ft-lb without detonation. This level is established mainly on past experience with various materials used in LOX systems. The acceptance level is occasionally adjusted downward depending on the intended application of the tested material. The results obtained from the tester appear to be reproducible from test to test to + 10 ft-lbs or better. More -42- data is needed to· prove this.

2 x 10 X ·s 10-6 11 12 13 14 Some fundamental efforts have been reported ' , , on solution behavior based on the law of corresponding states. However, no theory has been developed so far which allows the prediction of solubility of solids in liquids at low temperatures. Attempts were made, unsucces sfully, to apply virial type gas phase solubility equations15, 16 to the da ta reported here. It may be that this approach will be useful with equations extended by additional virial expansion terms.

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