NIST Pure Fluids shares much of its code, and some fluids, with the NIST REFPROPĭatabase. No part of this database may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the distributor.ĭevelopment of this database was supported by the NIST Standard Reference Data Program and the NIST Physical and Chemical Properties Division. Secretary of Commerce on behalf of the United States of America. Microsoft Fortran is a registered trademark of the Microsoft Corporatio. Fortner Research Fortran is a registered trademark of Fortner Research Corporation ®. Digital Visual Fortran is a registered trademark of Digital Electronic Corporation ®. Absoft ProFortran is a trademark of Absoft Corporation ®. #Nist refprop program windows#Microsoft and Windows are registered trademarks of the Microsoft ® Corporation Lahey F77L and Lahey FORTRAN 90 are trademarks of Lahey Computer Systems ®, Inc., Pentium is a trademark of Intel Corporation. In no case does such identification imply endorsement by the National Institute of Standards and Technology nor does it imply that the products or services so identified are necessarily the best available for the purpose. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.Ĭertain trade names and other commercial designations are used in this work for the The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. National Institute of Standards and Technology Physical and Chemical Properties Division Properties of Pure Fluids - NIST Pure Fluids Version 5.0 Users’ Guide * Information listed above is at the time of submission.NIST Standard Reference Database 12 Users' Guide The fluid property data resulting from these studies would best serve the engineering community if made available in the REFPROP program from the NIST and this proposal seeks to author the collected data into a freely-availablenbsp library under NIST direction.nbsp Additionally, although the freezing point of MMH approaches -60deg C and it should be usable with MON down to -40deg C, the viscosity of MMH increase rapidly below 0deg C.nbsp This may causenbsp flow and mixing problems that can inhibit ignition and steady operation.nbsp In a previous Department of Defense program, it was demonstrated that adding a compound to a similar fuel resulted innbsp lower viscosity without negatively impacting combustion efficiency.nbsp To characterize the results of blending MMH similarly, this proposal also seeks to investigatenbsp key physical properties of MMH-blends at cold temperatures andnbsp perform hypergolic ignition and hypergolic performance testing with MON-25.nbsp Like the MON data, the results of these studies will be authored into the REFPROP libraries for general distribution. The REFPROP program developed by the National Institute of Standards and Technology (NIST) is a widely-used database for industrial fluid properties, including propellants used for chemical rocket propulsion.nbsp For deep space applications, low-temperature propellants are of particular interest but accurate fluid property data was scarce or unavailable to the industry.nbsp Recently, NASA MSFC has funded several research programs (including this proposal#39 s phase I contract) to develop capabilities of handling and measuring the physical, thermodynamic, and system properties of Modified Oxides of Nitrogen (MON), which is Nitrogen Tetraoxide (NTO) blended with various percentages of Nitrous Oxide.nbsp High-MON blends (15-30% NO) have a significantly lower freezing point than neat NTO and promise to enable cold-propellant operation in hypergolic rocket engines when paired with Monomethyl Hydrazine (MMH).
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