1、BRITISH STANDARD AEROSPACE SERIES BS ISO 15859-6:2004 Space systems Fluid characteristics, sampling and test methods Part 6: Monomethylhydrazine propellant ICS 49.140 BS ISO 15859-6:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 Augu
2、st 2004 BSI 16 August 2004 ISBN 0 580 44270 5 National foreword This British Standard reproduces verbatim ISO15859-6:2004 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
3、ACE/68/-/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 foun
4、d in the BSI 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 respo
5、nsible for 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 t
6、he UK interests 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 6, an inside back cover and a back cover The BSI copyright no
7、tice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 15859-6:2004(E)INTERNATIONAL STANDARD ISO 15859-6 First edition 2004-06-01 Space systems Fluid characteristics, sampling and test methods Part
8、6: Monomethylhydrazine propellant Systmes spatiaux Caractristiques, chantillonnage et mthodes dessai des fluides Partie 6: Monomthylhydrazine (ergol) BSISO158596:2004DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In ccacnadrow eitA hebods licnesilop gnic,y tihs file mirp eb yatnde iv r
9、oweb detu slahl ton ide ebtlnu deess teh typfecaes wihce era hml era deddebicsnede ti dna onstlalde t noeh comuptfrep reromign tide ehtin.g In wodlnidaot gnihs fil,e trapise atpecc tiereht nser ehnopsiiblity fo nto ifnriigngn Aebods licnesilop gnic.y ehT ISO tneClar Secrteirata caceptl on siibality
10、in this .aera Ai ebods a tedarmfo kra Aebod SystemI snctaropro.de teDials fo teh sfotwcudorp erats sut deo crtaee tihs PDF file cna f ebi dnuon tlareneG eh Ifnler oatit evt oeh file; tP ehDc-Frtaeino marapteres wtpo ereimizf deirp rotni.gn Evc yresah era t neebakt nesne ot erutah teh fili es siutlba
11、f eosu rI yb eSO memdob rebeis. In tlnu ehikletneve y ttah lborp aem lertait gno it is f,dnuo plsaee ifnrom ttneC ehlar Secterirata ta teh serddaig sleb nevwo. ii BSISO158596:2004 iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bod
12、ies (ISO member bodies). The work of preparing International 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 organization
13、s, governmental and non-governmental, in liaison with 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 I
14、SO/IEC Directives, Part 2. The main task of technical 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
15、 member bodies casting a vote. Attention is drawn to 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 15859-6 was prepared by Technical Committee ISO/TC 20, Aircraft an
16、d space vehicles, Subcommittee SC 14, Space systems 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 propellant
17、s Part 6: Monomethylhydrazine propellant Part 7: Hydrazine propellant Part 8: Kerosine propellant Part 9: Argon Part 10: Water Part 11: Ammonia Part 12: Carbon dioxide Part 13: Breathing air BSISO158596:2004iv Introduction Fluid operations at a spaceport or launch site may involve a number of operat
18、ors and supplier/customer interfaces, from the fluid 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 gr
19、ound support equipment. The fluid composition limits 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
20、 acceptable methods for verification of the fluid composition limits. BSISO158596:2004 1Space systems Fluid characteristics, sampling and test methods Part 6: Monomethylhydrazine propellant 1 Scope This part of ISO 15859 specifies limits for the composition of monomethylhydrazine and establishes the
21、 sampling and test requirements applicable for the verification of the monomethylhydrazine (MMH) composition. This part of ISO 15859 is applicable to monomethylhydrazine propellant, used as a fuel in propellant systems of space systems as well as in both flight hardware and ground facilities, system
22、s and equipment, of the following grades. Grade A: 98,0 % pure, Grade F: 98,5 % pure. This part of ISO 15859 is applicable to influents only within the specified limits herein. This part of ISO 15859 is applicable to any sampling operation required to ensure that, when the fluid enters the launch ve
23、hicle 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, only the
24、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 9000 and
25、 the following apply. 3.1 particulate matter undissolved solids retained on a filter paper with a 10-m nominal and 40-m absolute rating 3.2 verification test analysis performed on the fluid in the container, or a sample thereof, which is representative of the supply, permitting the verification of f
26、luid composition limits BSISO158596:20042 4 Chemical composition and physical properties 4.1 Chemical composition Unless otherwise provided in an applicable technical specification, the chemical composition of MMH propellant delivered to the flight vehicle interface shall be in accordance with the l
27、imits given in Table 1 when tested in accordance with the applicable test methods. Table 1 Composition limits Limits Component Grade A Grade F Monomethylhydrazine Mass fraction, %, min. 98,0 98,5 Water Mass fraction, %, max. 2,0 0,5 Particulate matter mg/l, max. 10 10 Sodium g/g, max. 2 Ammonia (NH
28、3 ) Mass fraction, %, max. 0,2 Monomethylamine Mass fraction, %, max. 0,3 4.2 Physical properties The propellant shall be a clear homogeneous liquid when examined visually by transmitted light. 5 Procurement The MMH grades specified in Clause 1 should be procured in accordance with an applicable nat
29、ional standard. 6 Fluid sampling CAUTION Monomethylhydrazine, 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 monomethylhydrazine to prevent contact with the human body and with mate
30、rials that are not compatible with monomethylhydrazine. 6.1 Plan In order 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,
31、and approved by the final user. Sampling activities and test methods shall 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, BSISO158596:2004 3 the number of samples, th
32、e test methods, and the responsibilities of any involved operator. 6.2 Responsibility for sampling Unless otherwise provided in an applicable technical specification, the monomethylhydrazine delivered to the flight vehicle interface shall be sampled and verified by the supplier responsible for provi
33、ding the monomethylhydrazine to the flight vehicle. The supplier may use his/her or any other resources suitable 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 th
34、e fluid storage site or the flight vehicle interface. 6.4 Sampling frequency Sampling shall be performed annually 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 l
35、imiting characteristics. If a single sample does not contain a sufficient quantity to perform all of the analyses 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
36、 following: a) one sample per storage container; b) any number of samples agreed upon by the supplier and the customer. 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 Liq
37、uid samples shall be a typical specimen from the liquid monomethylhydrazine supply. Samples shall be 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 pro
38、cedure. b) By withdrawing a sample from the supply container through a suitable connection into the sample container. For safety reasons, the sample container and sampling system shall have a rated service pressure at least equal to the pressure in the supply container. BSISO158596:20044 6.9 Rejecti
39、on 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 will ensure, by
40、standard practice, the quality level of monomethylhydrazine. If required, alternate test methods are described in 7.3 to 7.8. 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 series of
41、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 be pe
42、rformed 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 monomethylhydrazine. 7.2 Parameters of analysis The parameters for analytical techniques containe
43、d in 7.3 to 7.8 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
44、the 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 instruct
45、ions. 7.3 Monomethylhydrazine purity The monomethylhydrazine purity shall be determined by a gas chromatography method. This method may be used not only for monomethylhydrazine determination but also for the determination of water, ammonia, and monomethylamine (see Annex A). The analyser shall be ca
46、pable 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
47、 method such as that described in 7.3. 7.5 Particulate matter content The particulate matter content shall be determined by a gravimetric measurement method. A known volume of fuel is filtered through a preweighed test membrane filter and the increase in membrane filter mass is determined after wash
48、ing and drying. The change in mass of a control membrane filter located immediately below the test membrane filter is also determined. The particulate contaminant is determined from the increase in mass of the test membrane filter relative to the control membrane filter. BSISO158596:2004 57.6 Sodium
49、 content The sodium content shall be determined by one of the following methods. a) By an atomic absorption spectrometric method. b) An inductively coupled argon plasma emission spectrometric method. The sodium content cannot be measured directly in the liquid MMH sample but from a nonvolatile residue after dissolving it in an aqueous solution or an aqueous acid solution. 7.7 Ammonia content The ammonia conten
