ISO/TS TECHNICAL SPECIFICATION 20991 First edition 2018-07 Space systems Requirements for small spacecraft Systemes spatiaux - Exigences relatives aux petits engins spatiaux Reference number IS0/TS 20991:2018(E) so International Organization for Standardization Shenzhen Institute of Standards and Technology 9972181 @IS02018 ards Bodies IS0/TS 20991:2018(E) COPYRIGHTPROTECTEDDOCUMENT @IS02018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. ISO copyright office CP401·Ch.deBlandonnet8 CH-1214 Vernier, Geneva Phone:+4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ganizationfor Standardization ensee-sShenzhen Inste o tandards anedSogie- All rights reserved rious National Standards Bodies IS0/TS 20991:2018(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms ..2 5 Requirements .2 5.1 Launch interface .2 5.2 Safety. .2 5.3 Main payload, adjacent payload(s), and launcher harmlessness 3 5.3.1 Separation. .3 5.3.2 Outgassing. 3 5.3.3 Dummy specimen 3 5.3.4 Power state, radio transmission and deployable mechanism 3 5.3.5 RadioFrequencyCompatibility .3 5.4 Debris mitigation. 3 5.5 Use of radio frequencies .3 5.6 UN registration. .4 5.7 Verification for design and manufacturing .4 5.8 CubeSat. 5.9 Release from ISS. .4 6 Verification .4 Bibliography 6 iii e=Shenzhen Institute of Standards and Technology 9972181