1、BRITISH STANDARD AEROSPACE SERIES BS ISO 15859-7:2004 Space systems Fluid characteristics, sampling and test methods Part 7: Hydrazine propellant ICS 49.140 BS ISO 15859-7:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 August 2004 BS
2、I 16 August 2004 ISBN 0 580 44271 3 National foreword This British Standard reproduces verbatim ISO15859-7:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee ACE/68, Space systems and operations, to Subcommittee ACE/68/-/3
3、, Operations and ground support, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the B
4、SI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for
5、 its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK inte
6、rests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover The BSI copyright notice displayed in this document
7、indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 15859-7:2004(E)INTERNATIONAL STANDARD ISO 15859-7 First edition 2004-06-01 Space systems Fluid characteristics, sampling and test methods Part 7: Hydrazine propellant Systmes
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11、 y ttah lborp aem lertait gno it is f,dnuo plsaee ifnrom ttneC ehlar Secterirata ta teh serddaig sleb nevwo. ii BSISO158597:2004 iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Inte
12、rnational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison wi
13、th ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technic
14、al committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn t
15、o the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15859-7 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems
16、 and operations. ISO 15859 consists of the following parts, under the general title Space systems Fluid characteristics, sampling and test methods: Part 1: Oxygen Part 2: Hydrogen Part 3: Nitrogen Part 4: Helium Part 5: Nitrogen tetroxide propellants Part 6: Monomethylhydrazine propellant Part 7: Hy
17、drazine propellant Part 8: Kerosine propellant Part 9: Argon Part 10: Water Part 11: Ammonia Part 12: Carbon dioxide Part 13: Breathing air BSISO158597:2004iv Introduction Fluid operations at a spaceport or launch site may involve a number of operators and supplier/customer interfaces, from the flui
18、d production plant to the delivery to the launch vehicle or spacecraft. The purpose of ISO 15859 is to establish uniform requirements for the components, sampling and test methods of fluids used in the servicing of launch vehicles, spacecraft and ground support equipment. The fluid composition limit
19、s specified are intended to define the purity and impurity limits of the fluid for loading into the launch vehicle or spacecraft. The fluid sampling and test methods are intended to be applied by any operator. The fluid sampling and test methods are acceptable methods for verification of the fluid c
20、omposition limits. BSISO158597:2004 1Space systems Fluid characteristics, sampling and test methods Part 7: Hydrazine propellant 1 Scope This part of ISO 15859 specifies limits for the composition and physical properties of anhydrous hydrazine (N 2 H 4 ) and establishes the sampling and test require
21、ments applicable for the verification of the anhydrous hydrazine composition. This part of ISO 15859 is applicable to anhydrous hydrazine propellant, intended for use as fuel in propellant systems of space systems as well as in both flight hardware and ground facilities, systems, and equipment, of t
22、he following grades. Standard: normal production and quality control (suitable for most uses). Monopropellant: normal product with strict control of specified impurities (to be specified only for monopropellant catalytic engines where extended life of the catalyst is desired). High purity: special p
23、roduction with strict control of specified impurities. This part of ISO 15859 is applicable to influents only within the specified limits herein. Hydrazine may be of the liquid type. This part of ISO 15859 is applicable to any sampling operation required to ensure that, when the fluid enters the lau
24、nch vehicle or spacecraft, the fluid composition complies with the limits provided hereafter or with any technical specification agreed to for a particular use. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, onl
25、y the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9000, Quality management systems Fundamentals and vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 90
26、00 and the following apply. 3.1 particulate standard grade undissolved solids retained on a filter paper with a 10-m nominal and 40-m absolute rating BSISO158597:20042 3.2 particulate monopropellant and high purity grades undissolved solids retained on a filter paper with a 2-m nominal and 10-m abso
27、lute rating 3.3 verification test analysis performed on the fluid in the container, or a sample thereof, which is representative of the supply, permitting the verification of fluid composition limits 4 Chemical composition and physical properties 4.1 Chemical composition Unless otherwise provided in
28、 an applicable technical specification, the chemical composition of hydrazine propellant delivered to the flight vehicle interface shall be in accordance with the limits given in Table 1 when tested in accordance with the applicable test methods. Table 1 Composition limits Limits Composition Standar
29、d grade Mono- propellant grade High purity grade Hydrazine Mass fraction, %, min. 98 98,3 99,0 Water Mass fraction, %, max. 1,5 1,2 1,0 Ammonia Mass fraction, %, max. 0,3 Particulate mg/l, max.10 1,0 1,0 Chloride Mass fraction, %, max. 0,000 5 0,000 5 Aniline Mass fraction, %, max. 0,50 0,003 Iron M
30、ass fraction, %, max. 0,002 0,000 4 Nonvolatile residue Mass fraction, %, max. 0,005 0,001 Carbon dioxide Mass fraction, %, max. 0,003 0,003 Other volatile carbonaceous components aMass fraction, %, max. 0,02 0,005 a Total as monomethylhydrazine (MMH), unsymmetrical dimethylhydrazine (UDMH) and alco
31、hol.4.2 Physical properties The propellant shall be a colourless, homogeneous liquid when examined visually by transmitted light. 5 Procurement The hydrazine grades specified in Clause 1 should be procured in accordance with an applicable national standard. BSISO158597:2004 36 Fluid sampling CAUTION
32、 Hydrazine, in the liquid or vapour form, is flammable fuel, highly reactive in contact with an oxidant, toxic, and volatile. Care should be taken in the handling and storage of hydrazine to prevent contact with the human body and with materials that are not compatible with hydrazine. 6.1 Plan In or
33、der to ensure that the fluid composition complies with the limits specified in this part of ISO 15859, a fluid sampling plan should be established by all the involved operators, from the production to the space vehicle interface, and approved by the final user. Sampling activities and test methods s
34、hall comply with all safety regulations and rules applicable to that task. This plan shall specify the sampling points, the sampling procedures, the sampling frequency, the sample size, the number of samples, the test methods, and the responsibilities of any involved operator. 6.2 Responsibility for
35、 sampling Unless otherwise provided in an applicable technical specification, the hydrazine delivered to the flight vehicle interface shall be sampled and verified by the supplier responsible for providing the hydrazine to the flight vehicle. The supplier may use his/her or any other resources suita
36、ble for the performance of the verification tests specified herein unless otherwise directed by the customer. 6.3 Sampling points Unless otherwise specified, sampling shall be conducted at the fluid storage site or the flight vehicle interface. 6.4 Sampling frequency Sampling shall be performed annu
37、ally or in accordance with a time agreed upon by the supplier and the customer. 6.5 Sample size The quantity in a single sample container shall be sufficient to perform the analysis for the limiting characteristics. If a single sample does not contain a sufficient quantity to perform all of the anal
38、yses for the required quality verification test, additional samples shall be taken under similar conditions. 6.6 Number of samples The number of samples shall be in accordance with one of the following: a) one sample per storage container; b) any number of samples agreed upon by the supplier and the
39、 customer. BSISO158597:20044 6.7 Storage container Unless otherwise provided by the applicable sampling plan, the fluid storage container shall not be refilled after the sample is taken. 6.8 Liquid samples Liquid samples shall be a typical specimen from the liquid hydrazine supply. Samples shall be
40、obtained in accordance with one of the following. a) By filling the sample container and storage containers at the same time, on the same manifold, and under the same conditions and with the same procedure. b) By withdrawing a sample from the supply container through a suitable connection into the s
41、ample container. No pressure regulator shall be used between the supply and the sample containers. (Suitable purge and drain valves are permissible.) For safety reasons, the sample container and sampling system shall have a rated service pressure at least equal to the pressure in the supply containe
42、r. 6.9 Rejection When any sample of the fluid tested in accordance with Clause 7 fails to conform to the requirements specified herein, the fluid represented by the sample shall be rejected. Disposal of the rejected fluid shall be specified by the customer. 7 Test methods 7.1 General The supplier wi
43、ll ensure, by standard practice, the quality level of hydrazine. If required, alternate test methods are described in 7.3 to 7.12. Other test methods not listed in this part of ISO 15859 are acceptable if agreed upon between the supplier and the customer. These tests are a single analysis or a serie
44、s of analyses performed on the fluid to ensure the reliability of the storage facility to supply the required quality level. This can be verified by analysis of representative samples of the fluid from the facility at appropriate intervals as agreed upon between supplier and the customer. Tests may
45、be performed by the supplier or by a laboratory agreed upon between the supplier and the customer. The analytical requirements for the tests shall include the determination of all limiting characteristics of hydrazine. 7.2 Parameters of analysis The parameters for analytical techniques contained in
46、7.3 to 7.12 are the following: a) purity and impurity contents shall be expressed as a percentage by mass (mass fraction, %) unless otherwise specified; b) calibration standards containing the applicable liquid components may be required to calibrate the analytical instruments used to determine the
47、limiting characteristic levels of fluid; c) if required by the customer, the accuracy of the measuring equipment used in preparing these standards shall be traceable to an established institute for standards; d) analytical equipment shall be operated in accordance with the manufacturers instructions
48、. BSISO158597:2004 57.3 Hydrazine purity The hydrazine purity shall be determined by a gas chromatography method. This method may be used not only for hydrazine but also for the determination of water, ammonia, aniline, and other volatile carbonaceous components. (See Annex A.) The analyser shall be
49、 capable of separating and detecting the component with a sensitivity of 10 % of the specified maximum amount of the component. The analyser shall be calibrated at appropriate intervals by the use of calibration standards. 7.4 Water content The water content shall be determined by a gas chromatographic method, such as that described in 7.3. 7.5 Ammonia content The ammonia content shall be dete
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