CLDP-REQ-1130.pdf

CLDP-REQ-1130

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Requirement and Standards for the Commercial Low-Earth Orbit Development Program

DECEMBER 2024

This document does not contain information which falls under the purview of the U.S. Munitions List (USML), as defined in the International Traffic in Arms Regulations (ITAR), 22 CFR 120-130, nor the Export Administration Regulation (EAR), 15 CFR 730-774, and is not export controlled. Release to the public requires approval by Commercial LEO Development Office of Primary Responsibility through the appropriate NASA Release Process (e.g., FOIA, NASA STI, etc.).

REVISION AND HISTORY

REV. DESCRIPTION PUB. DATE

- Initial Release (Reference Directive CLDP-D0032, EFF. 01-17- 25)

Program Release 01-21-2025 i

PREFACE

REQUIREMENT AND STANDARDS FOR THE COMMERCIAL LOW-EARTH ORBIT (LEO)

DEVELOPMENT PROGRAM (CLDP)

The contents of this document are intended to be consistent with the tasks and products to be prepared by the Commercial LEO Development Program Partners/Providers.

This document is under the control of a Joint Program Control Board (JPCB) with Commercial LEO Development Program (CLDP) and Commercial Crew Program (CCP). The JPCB is the authority for baselining and approving changes. This document was developed and is maintained by the CLDP Systems Engineering and Integration (SE&I) Office.

See Directive CLDP-D0032 Approval 01-17-2025

Angela T. Hart Program Manager Commercial Low-Earth Orbit Development Program

Date ii

COMMERCIAL LOW-EARTH ORBIT DEVELOPMENT PROGRAM

REQUIREMENT AND STANDARDS FOR THE COMMERCIAL LOW-EARTH ORBIT (LEO)

DEVELOPMENT PROGRAM

CONCURRENCE

DECEMBER 2024

iii

TABLE OF CONTENTS

PARAGRAPH PAGE

1 .0 INTRODUCTION ........................................................................................................................................ 1-1

1.1 PURPOSE .................................................................................................................................................. 1-1

1.2 SCOPE ....................................................................................................................................................... 1-1

1.3 PRECEDENCE ........................................................................................................................................... 1-2

1.4 CHANGE AUTHORITY AND RESPONSIBILITY ........................................................................................ 1-2

1.5 VERB APPLICATION AND LEXICON ........................................................................................................ 1-2

2 .0 DOCUMENTS ............................................................................................................................................. 2-1

2.1 APPLICABLE DOCUMENTS ...................................................................................................................... 2-1

2.2 REFERENCE DOCUMENTS ..................................................................................................................... 2-9

3 .0 REQUIREMENTS ....................................................................................................................................... 3-1

3.1 SYSTEM OVERVIEW ................................................................................................................................. 3-1

3.2 COMMERCIAL LEO DESTINATION SYSTEM (CLDS) .............................................................................. 3-1

3.2.1 SAFETY AND MISSION ASSURANCE ..................................................................................................... 3-1

3.2.1.1 FAILURE TOLERANCE ............................................................................................................................ 3-1

3.2.1.2 EMERGENCY RESPONSE ....................................................................................................................... 3-4

3.2.1.3 CREW SAFETY ......................................................................................................................................... 3-5

3.2.2 CREW AND MISSION SUPPORT ............................................................................................................ 3-11

3.2.2.1 GROUND SUPPORT ............................................................................................................................... 3-18

3.2.2.2 CARGO AND LOGISTICS ....................................................................................................................... 3-19

3.2.3 AVIONICS AND COMMUNICATION ........................................................................................................ 3-20

3.2.4 POWER AND ELECTRICAL ..................................................................................................................... 3-23

3.2.4.1 POWER AND ELECTRICAL STANDARDS ............................................................................................. 3-26

3.2.5 STRUCTURAL AND MECHANICAL ......................................................................................................... 3-27

3.2.6 HATCH DESIGN ....................................................................................................................................... 3-30

3.2.7 ENVIRONMENTAL CONTROL AND LIFE SUPPORT ............................................................................. 3-32

3.2.7.1 FIRE DETECTION AND NOTIFICATION ............................................................................................... 3-35

3.2.7.2 FIRE ISOLATION ..................................................................................................................................... 3-36

3.2.7.3 FIRE SUPPRESSANT ............................................................................................................................. 3-37

3.2.7.4 FIXED FIRE SUPPRESSION .................................................................................................................. 3-38

3.2.7.5 PORTABLE FIRE SUPPRESSION .......................................................................................................... 3-40

3.2.8 GUIDANCE, NAVIGATION AND CONTROL ............................................................................................ 3-40

3.2.9 SPACE ENVIRONMENT .......................................................................................................................... 3-41

3.2.10 SOFTWARE .............................................................................................................................................. 3-42 iv

3.2.10.1 SOFTWARE SAFETY .............................................................................................................................. 3-42

3.2.11 HUMAN HEALTH, MEDICAL AND PERFORMANCE .............................................................................. 3-49

3.2.11.1 CREW HEALTH AND MEDICAL ............................................................................................................. 3-49

3.2.11.2 CREW CHARACTERISTICS ................................................................................................................... 3-61

3.2.11.3 HUMAN PERFORMANCE ....................................................................................................................... 3-61

3.2.11.4 ACOUSTICS ............................................................................................................................................ 3-66

3.2.12 OTHER DESIGN AND CONSTRUCTION STANDARDS ......................................................................... 3-70

3.2.13 DESIGN TESTING .................................................................................................................................... 3-72

3.3 COMMERCIAL TRANSPORTATION AND SERVICE REQUIREMENTS ................................................. 3-73

3.3.1 GENERAL ................................................................................................................................................. 3-73

3.3.2 SAFETY AND MISSION ASSURANCE .................................................................................................... 3-74

3.3.2.1 CREW SAFETY ....................................................................................................................................... 3-74

3.3.2.2 SAFETY AND HAZARD CONTROL ........................................................................................................ 3-79

3.3.2.3 FAILURE TOLERANCE ........................................................................................................................... 3-84

3.3.2.4 EMERGENCY EQUIPMENT .................................................................................................................... 3-86

3.3.3 PRE-LAUNCH/ASCENT ........................................................................................................................... 3-87

3.3.3.1 PAD AND ASCENT ABORTS .................................................................................................................. 3-87

3.3.3.2 PAD CONTINGENCIES ........................................................................................................................... 3-91

3.3.4 ON ORBIT ................................................................................................................................................. 3-93

3.3.4.1 NOMINAL ................................................................................................................................................. 3-93

3.3.4.2 CONTINGENCY ...................................................................................................................................... 3-95

3.3.5 ENTRY/LANDING REQUIREMENTS ....................................................................................................... 3-98

3.3.5.1 NOMINAL ................................................................................................................................................. 3-98

3.3.5.2 CONTINGENCY .................................................................................................................................... 3-101

3.3.5.3 POST-LANDING RECOVERY ............................................................................................................... 3-104

3.3.8 CREW VISITING VEHICLE .................................................................................................................... 3-106

3.3.8.1 COMMUNICATIONS.............................................................................................................................. 3-106

3.3.8.2 CONTROL AND HANDLING ................................................................................................................. 3-106

3.3.9 SPACECRAFT AND LAUNCH VEHICLE DESIGN MANUFACTURING STANDARDS ......................... 3-109

3.3.10 HUMAN HEALTH, MEDICAL AND PERFORMANCE ............................................................................ 3-109

3.3.10.1 OPERATIONAL LIMITATIONS .............................................................................................................. 3-111

3.3.10.2 CREW SUPPORT EQUIPMENT ........................................................................................................... 3-112

3.4 COMMERCIAL LEO DESTINATION....................................................................................................... 3-112

3.4.1 SAFETY AND MISSION ASSURANCE .................................................................................................. 3-113

3.4.2 CREW AND MISSION SUPPORT .......................................................................................................... 3-116

3.4.3 HUMAN HEALTH, MEDICAL, AND PERFORMANCE ........................................................................... 3-117 v

3.5 COMMERCIAL CARGO TRANSPORTATION SYSTEM ........................................................................ 3-120

3.6 COMMERCIAL LEO UTILIZATION ......................................................................................................... 3-124

3.6.1 CONDITIONED STOWAGE .................................................................................................................... 3-124

3.6.2 GLOVEBOXES ....................................................................................................................................... 3-129

3.6.3 MICROSCOPY ....................................................................................................................................... 3-134

3.6.4 PLANT RESEARCH................................................................................................................................ 3-139

3.6.5 PRESSURIZED PAYLOAD RESOURCES ............................................................................................. 3-142

3.6.6 UNPRESSURIZED PAYLOAD RESOURCES ....................................................................................... 3-143

3.6.7 DATA MANAGEMENT AND COMMUNICATION ................................................................................... 3-145

3.6.8 LAB EQUIPMENT AND SUPPLIES ........................................................................................................ 3-147

3.6.9 ENVIRONMENTAL MONITORING ......................................................................................................... 3-151

3.6.10 CENTRIFUGE ......................................................................................................................................... 3-153

3.6.11 ULTRASOUND ....................................................................................................................................... 3-157

4 .0 VERIFICATION ........................................................................................................................................... 4-1

4.1 GENERAL ................................................................................................................................................... 4-1

4.2 COMMERCIAL LEO DESTINATION SYSTEM ........................................................................................... 4-1

4.2.1 SAFETY AND MISSION ASSURANCE ...................................................................................................... 4-1

4.2.1.1 FAILURE TOLERANCE ............................................................................................................................ 4-1

4.2.1.2 EMERGENCY RESPONSE ....................................................................................................................... 4-4

4.2.1.3 CREW SAFETY ......................................................................................................................................... 4-6

4.2.2 CREW AND MISSION SUPPORT ............................................................................................................ 4-11

4.2.2.1 GROUND SUPPORT ............................................................................................................................... 4-16

4.2.2.2 CARGO AND LOGISTICS ....................................................................................................................... 4-17

4.2.3 AVIONICS AND COMMUNICATION ........................................................................................................ 4-18

4.2.4 POWER AND ELECTRICAL ..................................................................................................................... 4-22

4.2.4.1 POWER AND ELECTRICAL STANDARDS ............................................................................................. 4-24

4.2.5 STRUCTURAL AND MECHANICAL ......................................................................................................... 4-27

4.2.6 HATCH DESIGN ....................................................................................................................................... 4-31

4.2.7 ENVIRONMENTAL CONTROL AND LIFE SUPPORT ............................................................................. 4-33

4.2.7.1 FIRE DETECTION AND NOTIFICATION ................................................................................................ 4-36

4.2.7.2 FIRE ISOLATION ..................................................................................................................................... 4-38

4.2.7.3 FIRE SUPPRESSANT ............................................................................................................................. 4-39

4.2.7.4 FIXED FIRE SUPPRESSION .................................................................................................................. 4-40

4.2.7.5 PORTABLE FIRE SUPPRESSION .......................................................................................................... 4-42

4.2.8 GUIDANCE, NAVIGATION AND CONTROL ............................................................................................ 4-43 vi

4.2.9 SPACE ENVIRONMENT .......................................................................................................................... 4-44

4.2.10 SOFTWARE .............................................................................................................................................. 4-45

4.2.10.1 SOFTWARE SAFETY .............................................................................................................................. 4-45

4.2.11 HUMAN HEALTH, MEDICAL AND PERFORMANCE .............................................................................. 4-53

4.2.11.1 CREW HEALTH AND MEDICAL ............................................................................................................. 4-53

4.2.11.2 CREW CHARACTERISTICS ................................................................................................................... 4-63

4.2.11.3 HUMAN PERFORMANCE ....................................................................................................................... 4-64

4.2.11.4 ACOUSTICS ............................................................................................................................................ 4-69

4.2.12 OTHER DESIGN AND CONSTRUCTION STANDARDS ......................................................................... 4-72

4.2.13 DESIGN TESTING .................................................................................................................................... 4-76

4.3 COMMERCIAL TRANSPORTATION AND SERVICE REQUIREMENTS ................................................. 4-78

4.3.1 GENERAL ................................................................................................................................................. 4-78

4.3.2 SAFETY AND MISSION ASSURANCE .................................................................................................... 4-80

4.3.2.1 CREW SAFETY ....................................................................................................................................... 4-80

4.3.2.2 SAFETY AND HAZARD CONTROL ........................................................................................................ 4-84

4.3.2.3 FAILURE TOLERANCE ........................................................................................................................... 4-87

4.3.2.4 EMERGENCY EQUIPMENT .................................................................................................................... 4-88

4.3.3 PRE-LAUNCH/ASCENT ........................................................................................................................... 4-89

4.3.3.1 PAD AND ASCENT ABORTS .................................................................................................................. 4-89

4.3.3.2 PAD CONTINGENCIES ........................................................................................................................... 4-94

4.3.4 ON ORBIT ................................................................................................................................................. 4-95

4.3.4.1 NOMINAL ................................................................................................................................................. 4-95

4.3.4.2 CONTINGENCY ...................................................................................................................................... 4-97

4.3.5 ENTRY/LANDING REQUIREMENTS ..................................................................................................... 4-101

4.3.5.1 NOMINAL ............................................................................................................................................... 4-101

4.3.5.2 CONTINGENCY .................................................................................................................................... 4-104

4.3.5.3 POST-LANDING RECOVERY ............................................................................................................... 4-106

4.3.8 CREW VISITING VEHICLE .................................................................................................................... 4-108

4.3.8.1 COMMUNICATIONS.............................................................................................................................. 4-108

4.3.8.2 CONTROL AND HANDLING ................................................................................................................. 4-109

4.3.9 SPACECRAFT AND LAUNCH VEHICLE DESIGN MANUFACTURING STANDARDS ......................... 4-110

4.3.10 HUMAN HEALTH, MEDICAL AND PERFORMANCE ............................................................................ 4-111

4.3.10.1 OPERATIONAL LIMITATIONS .............................................................................................................. 4-112

4.3.10.2 CREW SUPPORT EQUIPMENT ........................................................................................................... 4-114

4.4 COMMERCIAL LEO DESTINATION....................................................................................................... 4-114

4.4.1 SAFETY AND MISSION ASSURANCE .................................................................................................. 4-115 vii

4.4.1.1 OPERATIONS NOMENCLATURE PROCESS ASSESSMENT ............................................................. 4-117

4.4.2 CREW AND MISSION SUPPORT .......................................................................................................... 4-117

4.4.3 HUMAN HEALTH, MEDICAL, AND PERFORMANCE ........................................................................... 4-118

4.5 COMMERCIAL CARGO TRANSPORTATION SYSTEM ........................................................................ 4-121

4.6 COMMERCIAL LEO UTILIZATION ......................................................................................................... 4-126

4.6.1 CONDITIONED STOWAGE .................................................................................................................... 4-126

4.6.2 GLOVEBOXES ....................................................................................................................................... 4-132

4.6.3 MICROSCOPY ....................................................................................................................................... 4-138

4.6.4 PLANT RESEARCH................................................................................................................................ 4-145

4.6.5 PRESSURIZED PAYLOAD RESOURCES ............................................................................................. 4-150

4.6.6 UNPRESSURIZED PAYLOAD RESOURCES ........................................................................................ 4-152

4.6.7 DATA MANAGEMENT AND COMMUNICATION ................................................................................... 4-154

4.6.8 LAB EQUIPMENT AND SUPPLIES ........................................................................................................ 4-156

4.6.9 ENVIRONMENTAL MONITORING ......................................................................................................... 4-162

4.6.10 CENTRIFUGE ......................................................................................................................................... 4-164

4.6.11 ULTRASOUND ....................................................................................................................................... 4-170

APPENDIX

APPENDIX A ACRONYMS AND ABBREVIATIONS ................................................................... A-1 APPENDIX B GLOSSARY .................................................................................................... B-1 APPENDIX C OPEN WORK .................................................................................................. C-1 APPENDIX D HUMAN HEALTH AND PERFORMANCE SUPPLEMENTAL ..................................... D-1 APPENDIX E HABITABLE ATMOSPHERE ............................................................................... E-1 APPENDIX F VERIFICATION MATRIX .................................................................................... F-1 APPENDIX G ALLOCATION MATRIX ..................................................................................... G-1 APPENDIX H ACCELERATION ............................................................................................. H-1 APPENDIX I CARGO ENVIRONMENT ..................................................................................... I-1 APPENDIX J EXTREME TEMPERATURE HAZARDS ................................................................ J-1 APPENDIX K BEST PRACTICES GUIDANCE .................................................................................................... K-1

TABLE

TABLE 2.0-1 APPLICABLE DOCUMENTS .................................................................................................. 2-1

TABLE 2.2-2 REFERENCE DOCUMENTS ................................................................................................ 2-10 viii

TABLE 3,2.1.2-1 EMERGENCY LIGHTING INTENSITY LEVELS ..................................................................... 3-4

TABLE 3.2.1.3-1 COLOR TABLE ....................................................................................................................... 3-7

TABLE 3.2.1.3-2 ALERT TYPE AND ANNUNCIATION ..................................................................................... 3-8

TABLE 3.2.2-1 SURFACE ILLUMINATION LEVELS ..................................................................................... 3-15

TABLE 3.2.2-2 BODY WASTE QUANTITIES ................................................................................................ 3-17

TABLE 3.2.11.1-1 TOXIC PRODUCT CONCENTRATION ACCURACIES ........................................................ 3-50

TABLE 3.2.11.1-2 RF ELECTROMAGNETIC FIELD EXPOSURE LIMITS ........................................................ 3-52

TABLE 32.11.1-3 NATURAL SUNLIGHT EXPOSURE LIMITS FOR DIFFERENT MECHANISMS .................. 3-54

TABLE 3.2.11.1-4 ACGIH REQUIREMENTS APPLICABILITY .......................................................................... 3-55

TABLE 3.2.11.1-5 DOSE LIMITS FOR CAREER/NON-CANCER EFFECTS ..................................................... 3-58

TABLE 3.2.11.1-6 LEAKAGE CURRENTS – MEDICAL AND BIOINSTRUMENTATION EQUIPMENT ............. 3-60

TABLE 3.2.11.3-1 MAXIMUM OBSERVED DESIGN-INDUCED ERROR RATES ............................................. 3-64

TABLE 3.2.11.3-2 MAXIMUM SYSTEM RESPONSE TIME FOR CREW INPUT ............................................... 3-66

TABLE 3.2.11.4-1 INTERMITTENT NOISE A-WEIGHTED OVERALL SOUND PRESSURE LEVEL AND

CORRESPONDING OPERATION DURATION LIMITS ........................................................ 3-67

TABLE 3.2.11.4-2 OCTAVE BAND SPL LIMITS FOR CONTINUOUS NOISE, DB RE 20 µPA ......................... 3-68

TABLE 3.3.2.1-1 DYNAMIC RESPONSE LIMITS ........................................................................................... 3-77

TABLE 3.3.2.2-1 VELOCITY LIMITS DATA ...................................................................................................... 3-81

TABLE 3.3.2.2-2 FREQUENCY-WEIGHTED VIBRATION LIMITS BY EXPOSURE TIME DURING

DYNAMIC PHASES OF FLIGHT ........................................................................................... 3-83

TABLE 3.3.3.1-1 RUNWAY ABORT LANDING WEATHER LIMITS ................................................................. 3-91

TABLE 3.4.3-1 SLEEP NOISE LIMIT .......................................................................................................... 3-117

TABLE 3.4.3-2 COUNTERMEASURES....................................................................................................... 3-118

TABLE 3.6.1-1 CONDITIONED STOWAGE FORM FACTORS ................................................................. 3-126

TABLE D-4 FOOD, MATERIAL, AND PREPARATION AREA MICROORGANISM LEVELS ................... D-5

TABLE D-5 NUTRIENT GUIDELINES FOR SPACE FLIGHT .................................................................. D-8

TABLE E-1 ATMOSPHERIC HABITABILITY LIMITS ................................................................................ E-1

TABLE F-1 VERIFICATION MATRIX ........................................................................................................ F-1

TABLE G-1 ALLOCATION MATRIX .......................................................................................................... G-1

TABLE H-1 DATA FOR FIGURE H-2 - AX SUSTAINED TRANSLATIONAL ACCELERATION LIMITS

(SEATED) ............................................................................................................................... H-2

TABLE H-2 DATA FOR FIGURE H-3 - AY SUSTAINED TRANSLATIONAL ACCELERATION LIMITS

(SEATED) ............................................................................................................................... H-4 ix

TABLE H-3 DATA FOR FIGURE H-4 - AZ SUSTAINED TRANSLATIONAL ACCELERATION LIMITS

(SEATED) ............................................................................................................................... H-1

TABLE H-4 DATA FOR FIGURE H-5 - ROTATIONAL VELOCITY LIMITS ............................................... H-1

TABLE H-5 DATA FOR FIGURE H-6 ........................................................................................................ H-2

TABLE I-1 ACCELERATION LOADS FOR LAUNCH ................................................................................ I-1

TABLE I-2 ACCELERATION LOADS FOR RETURN ................................................................................ I-1

TABLE I-3 RANDOM VIBRATION ENVIRONMENT .................................................................................. I-1

TABLE I-4 ACOUSTIC ENVIRONMENT ................................................................................................... I-2

TABLE J-1 INVERSE THERMAL INERTIA FOR COMMONLY USED MATERIALS ................................. J-2

TABLE J-2 HOT TEMPERATURE CONSTANTS FOR INTENTIONAL (PLANNED) CONTACT .............. J-2

TABLE J-3 INVERSE THERMAL INERTIA FOR COMMONLY USED MATERIALS ................................. J-4

TABLE J-4 COLD TEMPERATURE CONSTANTS FOR INCIDENTAL CONTACT .................................. J-4

TABLE J-5 COLD TEMPERATURE CONSTANTS FOR INTENTIONAL (PLANNED) CONTACT ............ J-4

TABLE K-1 - FREQUENCY-WEIGHTED VIBRATION LIMITS BY ACCUMULATED EXPOSURE

DURATION FOR PERIODS REQUIRING CREW TASK PERFORMANCE ......................... K-15

FIGURE

FIGURE 1-1 - CLDS ILLUSTRATED SCHEMA ............................................................................................. 1-3

FIGURE 3.2.7.1-1 FIRE DETECTION SELECTION ........................................................................................... 3-35

FIGURE 3.2.11.1-1 RF ELECTROMAGNETIC FIELD EXPOSURE LIMITS ........................................................ 3-53

FIGURE 3.2.11.3-1 NASA-MODIFIED SYSTEM USABILITY SCALE .................................................................. 3-62

FIGURE 3.3.2.2-2-1 ROTATIONAL VELOCITY LIMITS ........................................................................................ 3-82

FIGURE 3.3.2.2-2 FREQUENCY-WEIGHTED VIBRATION LIMITS BY EXPOSURE TIME

DURIDYNAMICPHASES OF FLIGHT ................................................................................... 3-83

FIGURE 3.3.3.1-1 SEA STATE DESIGN LIMITS FOR CREW RESCUE ........................................................... 3-91

FIGURE 3.3.8.2-1 HANDLING QUALITIES RATING SCALE ........................................................................... 3-108

FIGURE 3.4.3-1 LONG-DURATION VIBRATION EXPOSURE LIMITS FOR HEALTH DURING NON-

SLEEP PHASES OF MISSION ........................................................................................... 3-120

FIGURE 3.6.9-1 MICROGRAVITY ACCELERATION PERFORMANCE ...................................................... 3-153

FIGURE H-1 COMMON XYZ COORDINATE FRAME FOR TRANSLATIONAL ACCELERATION ............. H-1

FIGURE H-4 AZ SUSTAINED TRANSLATIONAL ACCELERATION LIMITS (SEATED) ............................ H-5

FIGURE H-5 ROTATIONAL VELOCITY LIMITS ......................................................................................... H-1

FIGURE H-6 ±GY SUSTAINED TRANSLATIONAL ACCELERATION LIMITS ........................................... H-2

FIGURE I-1 SHOCK RESPONSE SPECTRUM ........................................................................................... I-3 x

FIGURE J-1 HOT TOUCH TEMPERATURE LIMITS................................................................................... J-3

FIGURE J-2 COLD TOUCH TEMPERATURE LIMITS ................................................................................ J-5

1-1

1.0 INTRODUCTION

1.1 PURPOSE

The purpose of this document is to provide the National Aeronautics Space Administration (NASA) requirements necessary for development and certification of commercial systems sufficient for NASA procurement of end-to-end commercial services to support NASA's continued research, use of microgravity, and continuous Unites States (U.S.) presence in LEO. The intent of this document is that Commercial Partner will verify compliance to the requirements herein.

1.2 SCOPE

It is NASA's plan to purchase an end-to-end service from a commercial LEO destination including associated transportation to and from the destination for crew and cargo as well as complete accommodations required to support NASA crew and utilization needs.

The systems encompassed within this document will include the Crew Transportation System (CTS), the Commercial LEO Destination (CLD), and the Cargo Transportation System (CaTS). This document also defines the Utilization requirements associated with these systems.

NASA's requirements are applicable to United States Government (USG) crew only, where stated explicitly. Commercial Partners may choose to expand performance factors to address a wider range of possible crew members for their commercial purposes.

The document encompasses assets and services required to meet the NASA requirements, including pre-flight planning, trajectory and abort analysis, ground processing and manufacturing, ground operations, mission control, training, launch control, destination operations, post-landing recovery operations, safety and mission assurance, and all other functions required for safe and successful human space flight missions which will carry NASA crew and allow performance of NASA utilization activities. Requirements and regulations levied and managed by other government entities are not contained within this document.

The following describes the appendices contained herein:

• Appendix A - Acronyms

• Appendix B - Glossary - terms to provide context and clarity for the requirements.

• Appendix C - Open work - includes both To Be Determined (TBD) and To Be Resolved (TBR) items.

• Appendix D - Human Health and Performance Supplemental - content to support the health and human performance requirements.

• Appendix E - Habitable Atmosphere - requirements for what is necessary to achieve a habitable atmosphere.

• Appendix F - Verification Matrix - tabulation of verification methods for each requirement

• Appendix G - Allocation Matrix - to provide a point of departure for requirement decomposition and for lower-level allocation.

• Appendix H – Acceleration Limits and Coordinate System - supplemental acceleration data to support requirement R.CLDS.166.

• Appendix I – Cargo Environment - provides unique data applicable to the uncrewed cargo transportation system,

• Appendix J – Extreme Temperature Hazards - provides unique data to support

R.CLDS.193

• Appendix K – Best Practices – Additional “should” statements reflecting technical best practices.

1.3 PRECEDENCE

In the event of a conflict between the text of this document and references cited herein (listed in Section 2.0), the text of this document takes precedence. Nothing in this document supersedes applicable laws and regulations unless a specific exemption has been obtained.

In the event of conflict between this document and any exports of the NASA requirements database, the contents of this signed document take precedence.

1.4 CHANGE AUTHORITY AND RESPONSIBILITY

This document was jointly prepared by and managed by the CLDP and CCP. A JPRCB with CLDP and CCP is the authority for baselining and approving changes to this document. CLDP-REQ-1130,Requirements and Standards for CLDP will be maintained in accordance with Configuration Management (CM) process standards for the CLDP documentation. The CLDP and CCP are jointly responsible for assuring the definition, control, implementation, and verification of the requirements identified in this document.

The appropriate NASA Office of Primary Responsibility (OPR) identified for this document is the CLDP SE&I Requirements and Standards team.

1.5 VERB APPLICATION AND LEXICON

Requirements are defined in Section 3.0 and are denoted by "shall" in the requirements statement. Associated verifications of these requirements are defined in Section 4.0.

Best Practices are denoted "should" and documented in Appendix K. “Should”

1-2 statements do not require formal verification but should be strongly considered during development of the partner requirements.

The following defines the lexicon used throughout this document. These terms are intended to define which system or sub-system the requirements are allocated to at a high level; however, Appendix G defines the specific allocation for the requirements and shall be used for verification closure. Appendix B Glossary has definitions for what each system below is intended to address.

The Commercial LEO Destination System (CLDS) is the sum of all systems, facilities, and activities required to build, launch, maintain, and operate a human occupied on-orbit station. The CLDS consists of the CTS, CLD, CaTS, plus associated utilization.

Requirements denoted by CLDS include allocations to at least two of the three integrated systems. Each of these systems consists of a Ground System (GS), a Mission System (MS) and a spacecraft (Destination, Crew Visiting Vehicle (CVV), Cargo Visiting Vehicle (CaVV)). When a spacecraft is mated to its launch vehicle, this configuration is defined as the Integrated Stack (IS). Reference CLDS Illustrated Schema Figure as shown below.

FIGURE 1-1 - CLDS ILLUSTRATED SCHEMA

1-3

2-1

CLDP-REQ-1130

Baseline

2.0 DOCUMENTS

The following tables include both applicable and reference documents as contained in either a requirement or its associated rationale within this document. This includes design, analysis/modeling, manufacturing, testing, and quality control standards which apply to space flight hardware and software, standards for ground support equipment (GSE), and documents which provide additional context to support the application of the requirement.

2.1 APPLICABLE DOCUMENTS

This section includes the list of documents and technical and manufacturing standards that are mandated in the requirement as information required to be used to meet or meet the intent of a requirement. Included in the set of applicable documents, there are two types of standards:

1. A standard which must be followed in whole or part, as indicated in the invoking requirement, with no deviation or alternative proposal is identified by the word “meet” or "in accordance with". Verification language for these technical standards that must be met can be found in Section 4.0 of this document.

2. A standard which can be met explicitly by following the standard or by proposing alternate standards that meet or are consistent with the intent of the levied Standard are invoked by the words “meet the intent of” in the requirement language. The specific verification language for each of these alternative standards will be coordinated with NASA after an agreement is reached on the alternative standard. Verification language for these technical standards that must be met or complied with can be found in Section 4.0 of this document.

Additional evaluation criteria for standards may be found in CLDP-STD-1140, CLDP Standards and Processes.

TABLE 2.0-1 - APPLICABLE DOCUMENTS

Document Number Title Rev/Release Date

ACGIH TLVs and BEIs

ACGIH TLVs and BEIs Basic

ANSI/AIAA-S-080 Space Systems - Metallic Pressure Vessels, Pressurized Structures and Pressurized Components

A

ANSI/AIAA-S-081 Space Systems - Composite Overwrapped Pressure Vessels

B

2-2

Document Number Title Rev/Release Date

ANSI/ASA S3.2-

American National Standard Method for Measuring The Intelligibility Of Speech Over Communication Systems

Basic 9 December 2020

ANSI/ESD S20.20 ESD Association Standard for the Development of an Electrostatic Discharge (ESD) Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrically Initiated Explosive Devices)

ANSI S1.43-1997 Specifications for Integrating-Averaging Sound Level Meters

Basic

ANSI X9.52 Triple Data Encryption Algorithm Modes of Operation

Basic

ANSI Z136.1 American National Standard for Safe Use of Lasers

CLDP-REQ-3102 Hazard Analysis and Safety Process Requirements

Basic

CLDP-STD-1101 CLDP Docking System Specification Basic

CLDP-STD-1102 CLDP Payload Interface Standard for Heritage Hardware

Basic

CLDP-STD-1140 CLDP Standard and Processes Basic

FIPS Publication 140-3

Security Requirements for Cryptographic Modules

Basic May 22, 2019

FIPS Publication 197 Advanced Encryption Standard (AES) Basic 11-2001

GEIA-STD-0005-1 Performance Standard for Aerospace and High-Performance Electronic Systems Containing Lead-free Solder

A 2012-03-01

2-3

Document Number Title Rev/Release Date

GEIA-STD-0005-2 Standard for Mitigating the Effects of Tin Whiskers in Aerospace and High-Performance Electronic Systems

A 1 May 2012

GSDO-RQMT-1080 Cross-Program Contamination Control Requirements

A 03/26/2021

ICES-2019-58 The Impacts of Cabin Atmosphere Quality Standards and Control Loads on Atmosphere Revitalization Process Design

Basic

IEC 61000-4-2 Electromagnetic Compatibility (EMC) - Part 4-2:

Testing and Measurement Techniques- Electrostatic Discharge Immunity Test for Human Body Model (HBM) subassemblies, assemblies and equipment discharge levels

2008-12-09

IEC 61672-1 Electroacoustics - Sound level meters - Part 1:

Specifications

Basic

IEST-STD-CC1246 PRODUCT CLEANLINESS LEVELS –

APPLICATIONS, REQUIREMENTS, AND

DETERMINATION

Basic

IPC-2152 Standard for Determining Current Carrying Capacity in Printed circuit Board Design

August 2009 August 2009

IPC-2220 series Performance Class 3.

IPC Design Standards Family of Printed Board Design Documents

IPC-2221, IPC-2222, IPC-2223, IPC-2224, IPC-

2225, IPC-2226 & IPC-2227

Basic

IPC-2221 Generic Standard on Printed Board Design B 11/20/2012

IPC-2222 Sectional Design Standard for Rigid Organic Printed Boards

B 10/15/2020

IPC-2223 Sectional Design Standard for Flexible/Rigid- Flexible Printed Boards

E 01/31/2020

2-4

Document Number Title Rev/Release Date

IPC-2225 Sectional Design Standard for Organic Multichip Modules (MCM-L) and MCM-L Assemblies

Basic

IPC-2226 Sectional Design Standard for High Density Interconnect (HDI) Printed Boards

A 10/12/2017

IPC-2228 Sectional Design Standard for High Frequency (RF/Microwave) Printed Boards

Basic 10/17/2022

IPC-6010 Series Family of Printed Board Performance Documents IPC-6011, IPC-6012, IPC-6013, IPC-6015, Mounting & Interconnecting Structures, IPC-6017, IPC-6018

Basic Jan. 1, 2017

IPC-6011 Generic Performance Specification for Rigid Printed Boards

Basic 07/01/1996

IPC-6012 Qualification and Performance Specification for Rigid Printed Boards

E 02/25/2020

IPC-6012FS Space and Military Avionics Applications Addendum to IPC-6012F, Qualification and Performance Specification for Rigid Printed Boards

E 02/01/2024

IPC-6013 Qualification and Performance Specification for Flexible/Rigid-Flexible Printed Boards

E 09/16/2021

IPC-6015 Qualification & Performance Specification for Organic Multichip Module (MCM-L) Mounting & Interconnecting Structures

Basic 02/01/1998

IPC-6017 Qualification and Performance Specification for Printed Boards Containing Embedded Active and Passive Circuitry

A 09/16/2021

IPC-6018 Qualification and Performance Specification for High Frequency (Microwave) Printed Boards

D 03/01/2022

IPC-6018DS Space and Military Avionics Applications Addendum to IPC-6018D, Qualification and Performance Specification for High Frequency (Microwave) Printed Boards

D 08/01/2022

2-5

Document Number Rev/Release Date

IPC-CM-770 E

IPC/WHMA-A-620

Title

Guidelines for Printed Board Component Mounting

Requirements and Acceptance for Cable and Wire Harness Assemblies

E 10/2023

IPC/WHMA-A-620 -S Space Applications Electronic Hardware Addendum to IPC/WHMA-A-620E

E 10/2023

IPC J-STD-001 Requirements for Soldered Electrical and Electronic Assemblies

G Change 1 October 2017

IPC J-STD-001

Addendum

Space and Military Applications Electronic Hardware Addendum to IPC J-STD-001 Requirements for Soldered Electrical and Electronic Assemblies

GS

March 2018

IRENE-

AE9/AP9/SPM

Radiation Belt and Space Plasma Specification Models

Basic

ISBN 0875530478 American Public Health Association, Standard Methods for Examination of Water & Wastewater

Basic

ISO 2631-1:1997 Mechanical Vibration and Shock - Evaluation of Human Exposure to Whole-Body Vibration

1997-06

ISO 3382 Acoustics — Measurement of Room Acoustic Parameters

Basic

ISO 7731:2003 Ergonomics - Danger Signals for Public and Work Areas - Auditory Danger Signals

Basic

ISO 14644-1 Cleanrooms and Associated Controlled Environments Part 1: Classification of Air Cleanliness by Particle Concentration

Basic

ISO 14644-2 Cleanrooms and Associated Controlled Environments Part 2: Monitoring to Provide Evidence of Cleanroom Performance Related to Air Cleanliness by Particle Concentration

Basic

2-6

Document Number Title Rev/Release Date

ISO 20283-5:2016 Mechanical vibration — Measurement of vibration on ships Part 5: Guidelines for measurement, evaluation and reporting of vibration with regard to habitability on passenger and merchant ships

Basic

ISO/IEC 17025:2017 General Requirements for the competence of testing and calibration laboratories

Basic

JPR 1800.5 Biosafety Review Board Operations and Requirements

Basic

JSC 20584 Spacecraft Maximum Allowable Concentrations for Airborne Contaminants

B 11/30/2022

JSC 20793 Crewed Space Vehicle Battery Safety Requirements

D 03/08/2017

JSC 22538 Flight Crew Health Stabilization Program F July 2021

JSC 26895 Guidelines for Assessing the Toxic Hazard of Spacecraft Chemicals and Test Materials

A

JSC 62809 Human Rated Spacecraft Pyrotechnic Specification

E 06/22/2022

JSC 65828 Structural Design Requirements and Factors of Safety for Spaceflight Hardware

B 07/15/2014

JSC 65829 Loads and Structural Dynamics Requirements for Spaceflight Hardware

B Change 3 March 2024

JSC 65985 Requirements for Human Spaceflight for the Trailing Deployable Aerodynamic Decelerator

(TDAD)

A

JSC 65995 Commercial Human System Integration Processes (CHSIP)

Basic May 2011

JSC 67721 Certification Guidelines for Crewed Inflatable Softgood Structures

August 3, 2022

2-7

Document Number Title Rev/Release Date

MIL-STD-461 Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment

G 11 December

MIL-STD-464 Electromagnetic Environmental Effects (E3) Requirements for Systems

D 12-2020

MIL-STD-981 Department of Defense Standard Practice:

Design, Manufacturing and Quality Standards for Custom Electromagnetic Devices for Space Applications

C 05-2020

MSFC-DWG-

20M02540

Assessment of Flexible Lines for Flow Induced Vibrations

E 01/15/1992

MSFC-SPEC-3746 Flow-Induced Vibration Assessment Requirements for Metal Bellows and Flexhoses

Basic 04/16/2020

NASA-STD-1006 Space System Protection Standard A 07/15/2022

NASA-STD-3001

Vol. 2

NASA Space Flight Human System Standard Volume 2: Human Factors, Habitability, and Environmental Health

D 09/15/2023

NASA-STD-4003 Electrical Bonding for NASA Launch Vehicles, Spacecraft, Payloads, And Flight Equipment

A Change 1 01/19/2016

NASA-STD-4005 Low Earth Orbit Spacecraft Charging Design Standard

A Change 1 11/17/2021

NASA-STD-5012 Strength and Life Assessment Requirements for Liquid-Fueled Space Propulsion System Engine

B 06/16/2016

NASA-STD-5017 Design and Development Requirements for Mechanisms

B 12/06/2022

NASA-STD-5018 Strength Design and Verification Criteria for Glass, Ceramics, and Windows in Human Spaceflight Applications

Basic Change 1 11/27/2017

2-8

Document Number Title Rev/Release Date

NASA-STD-5019 Fracture Control Requirements for Spaceflight Hardware, for hardware structures of the integrated vehicle

A Change 3 08/14/2020

NASA-STD-5020 Requirements for Threaded Fastening Systems in Spaceflight Hardware

B 08/06/2021

NASA-STD-5021 Thermal Protection System Design Standard for Crewed Spacecraft

Basic 08-06-2019

NASA-STD-6001 Flammability, Offgassing, and Compatibility Requirements and Test Procedures

B Change 2 4/21/2016

NASA-STD-6016 Standard Materials and Processes…