ISO 15389:2023
Space systems — Flight-to-ground umbilicals
This document defines the general criteria for the development of flight-to-ground umbilical systems used by a space system. These criteria apply to the service arms or equivalent mechanisms, umbilical carriers and plates, couplings, connectors, withdrawal and retract devices, handling mechanisms and control systems for mechanisms, as well as the prevention of accidental cross-connection.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Umbilical system principles
4.2 Mating
4.2.1 Time
4.2.2 Handling and engagement
4.2.3 Alignment
4.2.4 Verification
4.2.5 Materials
4.3 Mass
4.4 Loads
4.4.1 General
4.4.2 Side loads
4.4.3 Tracking loads
4.5 Contamination prevention
4.6 Purges
4.7 Leak detection
4.8 Leakage disposal
4.9 Prevention of accidental cross-connection of fluid couplings
4.9.1 General
4.9.2 Requirements for umbilical connectors and couplings located on the same plate
4.9.3 Design and symbolic requirements to prevent cross-coupling
4.9.4 Recommended fastener elements
4.9.5 Design requirements for threaded connections
4.9.6 Design requirements for flanged connections
4.9.7 Design recommendations for electrical connections
4.9.8 Distinctive marking requirements
4.9.9 Marking figures and letters
4.9.10 Marking by symbols
4.9.11 Marking by colour
4.9.12 Connector and coupling service requirement
4.10 Electrical connectors
4.11 Grounding
4.12 Electromagnetic compatibility (EMC)
4.13 Lightning current paths
4.14 Environmental conditions
4.14.1 General
4.14.2 Natural environment
4.14.3 Launch-induced environment
4.14.4 Fire- and/or explosion-hazard environment
4.15 Component selection
4.16 Corrosion control
4.17 Maintainability
4.18 Accessibility
4.19 Component position feedback
4.20 Connection inspection
5 Design guidelines
5.1 Pre-flight disconnect
5.2 Inflight umbilical assembly
5.2.1 Inflight preferences
5.2.2 Rise-off umbilical assembly
5.2.3 Tail service mast
5.3 Pre-flight umbilical assembly
5.3.1 General
5.3.2 Umbilical couplings
5.3.3 Electrical connectors
5.3.4 Locking devices
5.3.5 Handling system
5.3.6 Control system
6 Test and evaluation
6.1 Umbilical test types
6.1.1 General
6.1.2 Static test
6.1.3 Dynamic test
6.1.4 Cryogenic test
6.2 Verification test phases for umbilical connectors and couplings
6.2.1 General
6.2.2 Electrical connectors
6.2.3 Fluid coupling
6.2.4 Umbilical
6.2.5 Unsatisfactory results
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Umbilical system principles
4.2 Mating
4.2.1 Time
4.2.2 Handling and engagement
4.2.3 Alignment
4.2.4 Verification
4.2.5 Materials
4.3 Mass
4.4 Loads
4.4.1 General
4.4.2 Side loads
4.4.3 Tracking loads
4.5 Contamination prevention
4.6 Purges
4.7 Leak detection
4.8 Leakage disposal
4.9 Prevention of accidental cross-connection of fluid couplings
4.9.1 General
4.9.2 Requirements for umbilical connectors and couplings located on the same plate
4.9.3 Design and symbolic requirements to prevent cross-coupling
4.9.4 Recommended fastener elements
4.9.5 Design requirements for threaded connections
4.9.6 Design requirements for flanged connections
4.9.7 Design recommendations for electrical connections
4.9.8 Distinctive marking requirements
4.9.9 Marking figures and letters
4.9.10 Marking by symbols
4.9.11 Marking by colour
4.9.12 Connector and coupling service requirement
4.10 Electrical connectors
4.11 Grounding
4.12 Electromagnetic compatibility (EMC)
4.13 Lightning current paths
4.14 Environmental conditions
4.14.1 General
4.14.2 Natural environment
4.14.3 Launch-induced environment
4.14.4 Fire- and/or explosion-hazard environment
4.15 Component selection
4.16 Corrosion control
4.17 Maintainability
4.18 Accessibility
4.19 Component position feedback
4.20 Connection inspection
5 Design guidelines
5.1 Pre-flight disconnect
5.2 Inflight umbilical assembly
5.2.1 Inflight preferences
5.2.2 Rise-off umbilical assembly
5.2.3 Tail service mast
5.3 Pre-flight umbilical assembly
5.3.1 General
5.3.2 Umbilical couplings
5.3.3 Electrical connectors
5.3.4 Locking devices
5.3.5 Handling system
5.3.6 Control system
6 Test and evaluation
6.1 Umbilical test types
6.1.1 General
6.1.2 Static test
6.1.3 Dynamic test
6.1.4 Cryogenic test
6.2 Verification test phases for umbilical connectors and couplings
6.2.1 General
6.2.2 Electrical connectors
6.2.3 Fluid coupling
6.2.4 Umbilical
6.2.5 Unsatisfactory results