1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 26869:2012Space systems Small-auxiliary-spacecraft (SASC)-to-launch-vehicle interface control documentBS ISO 26869:2012 BRITISH STANDARDNational forewordThis British Stand
2、ard is the UK implementation of ISO 26869:2012.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/68/-/2, Space systems and operations - Interfaces,integration and test.A list of organizations represented on this committee can beobtained on request to its secretary.This
3、publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 74131 9ICS 49.140Compliance with a British Standard cannot confer immunity
4、 fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate Text affectedBS ISO 26869:2012 ISO 2012Space systems Smallauxiliaryspacecraft (SASC)-to-launch-vehicle interface contr
5、ol documentSystmes spatiaux Document de contrle dinterface entre vhicules lanceurs et petits vhicules spatiaux auxiliairesINTERNATIONAL STANDARDISO 26869First edition 2012-04-01Reference number ISO 26869:2012(E)BS ISO 26869:2012ISO 26869:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCU
6、MENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body
7、in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 26869:2012ISO 26869:2012(E) ISO 2012 All rights reserved iiiContents PageForeword . vIntroduction . vi1
8、 Scope 12 Normative reference . 13 Terms, definitions and abbreviated terms 13.1 Terms and definitions . 13.2 Abbreviated terms . 14 Applicable and reference documentation . 24.1 Applicable documents . 24.2 Reference documents 24.3 Waivers . 25 SASC mission characteristics . 25.1 SASC mission descri
9、ption 25.2 SASC additional constraints 25.3 SASC simulator 26 Mechanical interface . 26.1 General . 26.2 Mechanical configuration 36.3 SASC fundamental frequencies 36.4 Usable volume 36.5 LVSASC adapter interface 36.6 Connector and microswitch definition 36.7 Purges and fluid connection interface 37
10、 Electrical interfaces 47.1 General . 47.2 Umbilical wiring diagram . 47.3 Umbilical connectors . 47.4 Umbilical wiring links . 47.5 Electrical commands dedication to SASC 57.6 Separation status transmission 67.7 Power supply 67.8 Earth potential continuity 68 Radio frequency and electromagnetic int
11、erface . 69 LV and SASC mission characteristics . 69.1 SASC input data for mission analysis . 69.2 Trajectory and performance analysis 79.3 Launch windows 79.4 SASC pointing and separation 710 Induced environment . 710.1 General . 710.2 Mechanical environment . 710.3 Thermal environment . 810.4 Stat
12、ic pressure . 910.5 Contamination and cleanliness . 910.6 Radio and electromagnetic environment 910.7 Overall compatibility . 911 Verification tests 911.1 General . 911.2 SASC mechanical environment qualification and acceptance tests . 911.3 LV/SASC .10BS ISO 26869:2012ISO 26869:2012(E)iv ISO 2012 A
13、ll rights reserved11.4 Primary payload/SASC .1012 Launch-range operation 1012.1 General .1012.2 Range capabilities .1012.3 Range communication facility .1312.4 Umbilical lines and ground lines .1412.5 Overall data transmission .1412.6 Operational constraints .1512.7 Range services .15BS ISO 26869:20
14、12ISO 26869:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a sub
15、ject 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 with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (I
16、EC) 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 technical committees is to prepare International Standards. Draft International Standards adopted by the technical committe
17、es 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 to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be he
18、ld responsible for identifying any or all such patent rights.ISO 26869 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations. ISO 2012 All rights reserved vBS ISO 26869:2012ISO 26869:2012(E)IntroductionSmall auxiliary spacecraft
19、(SASCs) are carried with primary spacecraft by using surplus launch capability, in order to make the best use of the launch vehicle (LV) extra capability. By definition, an SASC has no impact on the primary spacecraft or its mission.Establishing a common baseline of ICD requirements between the laun
20、ch vehicle side and the SASC side is a cost- and risk-minimum means of achieving success in international trade. In order to give a clear understanding of the ICD items needed to accommodate the SASC customers requirements, there is a need for international standardization. It is hoped that this Int
21、ernational Standard will encourage activity and lead to the increased utilization of space potential, opening the way for many more small space missions. LV and SASC organization may include additional topics and some sections of this International Standard might refer to elements that are not appli
22、cable to a particular LV, SASC or launch range characteristics, in which case they can be ignored. For most items, except when specified, the information can be provided in SASC or LV drawings and in tabular or narrative format with figures.vi ISO 2012 All rights reservedBS ISO 26869:2012Space syste
23、ms Smallauxiliaryspacecraft (SASC)tolaunchvehicle interface control document1 ScopeThis International Standard provides small auxiliary spacecraft (SASC) and launch vehicle (LV) organizations with basic rules for writing an interface control document (ICD), and a general format for the documents pre
24、sentation, when the SASC has an interface (I/F) only with the LV. It is applicable to the necessary ICD items and restrictions peculiar to SASCs, these spacecraft being as defined in the contract between the launch agency and the contractor. The payload area covered by this International Standard is
25、 limited to SASC.NOTE SASCs have minor priorities with respect to the main spacecraft.2 Normative referenceThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of th
26、e referenced document (including any amendments) applies.ISO 15863, Space systems Spacecraft-to-launch-vehicle interface control document3 Terms, definitions and abbreviated termsFor the purposes of this document, the following terms, definitions and abbreviated terms apply.3.1 Terms and definitions
27、3.1.1primary spacecraftmain payload of the launch operation3.1.2small auxiliary spacecraftSASCsmall payload which is carried with primary spacecraft by using surplus launch capability, in order to make the best use of the launch vehicles extra capability3.2 Abbreviated termsEMC electromagnetic compa
28、tibilityICD interface control documentI/F interfaceLV launch vehicleRF radio frequencySASC small auxiliary spacecraftUT universal timeINTERNATIONAL STANDARD ISO 26869:2012(E) ISO 2012 All rights reserved 1BS ISO 26869:2012ISO 26869:2012(E)4 Applicable and reference documentation4.1 Applicable docume
29、ntsThis section of the ICD shall describe the list of documents in terms of a formal agreement. The list should include the applicable LV users manual.4.2 Reference documentsThis section of the ICD shall describe the list of documents to be used to supplement this standard in terms of scope, content
30、s and description.4.3 WaiversThis section of the ICD shall describe the list of applicable waivers and corresponding current status.5 SASC mission characteristics5.1 SASC mission descriptionThis section of the ICD shall describe the following items:a) the purpose of the SASC mission and its orbital
31、characteristics;b) the general characteristics of the SASC bus, including appendages;c) the payload equipment and its purpose.The section should indicate the LV and SASC reference axes. It should include an in-orbit view of the SASC and may address general aspects of the mission such as ground netwo
32、rk, coverage zones and duration of SASC and launch vehicle interaction.5.2 SASC additional constraintsAny additional constraints on the SASC which may be necessary to preclude unacceptable effects on any LV or primary spacecraft function shall be specified in this section.5.3 SASC simulatorThis sect
33、ion shall describe, if required, the necessity of a SASC simulator, which may be used to maintain the launch schedule of the primary payload in case of SASC development/manufacturing delay or problems. The SASC simulator shall simulate the identified interfaces and characteristics of the SASC and in
34、formation shall be provided for the SASC simulator in accordance with this International Standard for specified interface parameters.6 Mechanical interface6.1 GeneralThis section of the ICD shall specify characteristics and parameters that define the mechanical I/F between the SASC (or simulator) an
35、d the LV. The information can be provided in SASC or LV drawings and in tabular or narrative format with figures.2 ISO 2012 All rights reservedBS ISO 26869:2012ISO 26869:2012(E)6.2 Mechanical configurationThis section of the ICD shall include configuration drawings of the SASC (or simulator) and ada
36、pter assembly within the payload compartment, which show and define the location of all interface components. Reference axes and relative rotational orientation shall be shown.6.3 SASC fundamental frequenciesThis section of the ICD shall state the minimum allowable SASC (or simulator) fundamental fr
37、equencies in the axial and lateral directions of the LV.6.4 Usable volumeThis section of the ICD shall provide drawings that show the allowable usable volume within the payload compartment. The usable volume is determined by the physical clearances that are based on the static clearances and dynamic
38、 deflections of the LV structures, primary payload, given SASC (or simulator) and other SASC (if applicable). The section shall also provide critical clearance information, including detailed views of protrusion areas and/or protected areas with their associated dimensions.6.5 LVSASC adapter interfa
39、ceThis section of the ICD shall describe all the characteristics of the physical and geometric I/F for the SASC (or simulator) and the LV, including the general characteristics of the payload adapter, considering the following items:a) type;b) material;c) geometrical shape;d) separation system;e) di
40、ameter of upper and lower I/F rings (if applicable);f) mass properties of equipped adapter of SASC;g) other significant information, as applicable.6.6 Connector and microswitch definitionThis section of the ICD defines the connector I/F, the following characteristics of which shall be considered:a)
41、type;b) quantity;c) location and mechanical I/F;d) push-on and push-off loads;e) separation force.6.7 Purges and fluid connection interfaceThis section of the ICD defines the SASC purge and fluid connection I/F. The following characteristics shall be considered:a) location and mechanical I/F:1) angu
42、lar position; ISO 2012 All rights reserved 3BS ISO 26869:2012ISO 26869:2012(E)2) radial position;3) height from separation plane;b) push-on and push-off loads;c) energy released;d) separation force;e) maximum allowable leakage rate on disconnect.7 Electrical interfaces7.1 GeneralSASCs can have restr
43、ictions on command lines, flight telemetry and power supply, and redundancy of the RF link in order not to distract primary spacecraft functions.This section of the ICD shall describe the results of coordination on those restrictions.7.2 Umbilical wiring diagramProvide detailed drawings of the SASC
44、for the LV- and SASC-to-ground facilities wiring diagram.7.3 Umbilical connectorsOrganizations responsible for providing connector elements shall be identified.Umbilical connectors shall be described for both the LV and SASC sides. The distinction shall be made between SASC servicing and SASC pyrote
45、chnic functions that are maintained on separate LVSASC connectors. Example figures of connectors shall be included.Connector characteristics shall be defined as follows:a) supplier;b) part number;c) number of pins available to user;d) polarizing key orientation;e) insert clocking;f) location (see al
46、so 6.6);g) backshell shielding requirement;h) harness shielding requirement.7.4 Umbilical wiring linksUmbilical links between the SASC and the LV, and between the SASC and the electrical checkout equipment plugs, shall be described, with the following characteristics, for each connector and connecto
47、r pin:a) pin number;b) function(s);c) wire type;4 ISO 2012 All rights reservedBS ISO 26869:2012ISO 26869:2012(E)d) twisting and shielding;e) maximum voltage (in volts);f) maximum current (in amperes);g) end-to-end resistance (in ohms);h) line start;i) line end;j) maximum voltage at separation (if ap
48、plicable);k) maximum current at separation (if applicable);l) signal type;m) signal frequency.The LV contractor shall define and conduct verification tests of the end-to-end, line-to-ground and line-to-line isolation resistance.7.5 Electrical commands dedication to SASC7.5.1 Pyrotechnic commandsThe
49、SASC contractor shall provide a schematic of the SASC electrical circuits related to pyrotechnic commands. Pyrotechnic commands shall be described considering the following characteristics:a) command identification;b) number of redundant commands;c) time of command initiation;d) minimum time interval between commands (in milliseconds);e) pulse width (in milliseconds);f) voltage (in volts);g) minimum all fire current (in amperes);h) maximum no fire current (in amperes);i) output isolation (in ohms);j) wire gage;k) wire type;l)
