DEPARTMENT OF DEFENSE STANDARD PRACTICE

1 AMSC N/AFSC 1810 MIL-STD-1540D 15 January 1999 _____ SUPERSEDING MIL-STD-1540C 15 SEPTEMBER 1994 DEPARTMENT OF DEFENSESTANDARD PRACTICEPRODUCT VERIFICATIONREQUIREMENTSFORLAUNCH, UPPER STAGE, AND SPACEVEHICLESNOTMEASUREMENTSENSITIVED ownloaded from Military STANDARD is approved for use by all Departments and Agencies ofthe DEPARTMENT of comments (recommendations, additions, or deletions) and anypertinent data which may be of use in improving this document should beprovided by letter addressed to:Space and Missile Systems Center, SMC/AXM160 Skynet Street, Suite 2315El Segundo, CA verification process is required by this document.

2 The verification process isfundamental in the development of a successful launch or space system. Theprocess involves various tasks performed in different program phases applyinga coherent bottom-up building block fact that most launch and space systems involve flight equipment that isnot recoverable and not repairable means that risk management is cost of a failure may be extremely high due to the loss of missioncapability and the loss of equipment. The large number of independentorganizations involved and the complexity of equipment and software meansthat extensive verification of launch and space systems is necessary to reducethe risk of failure.

3 A combination of different verification methodologies ( ,Test, Analysis, Inspection) at several assembly levels (from units to the overallsystem) through the various program verification phases ( Qualification,Acceptance, Pre-launch, On-orbit) is cost effective in assuring successfulequipment and software design and from .. APPLICABLE DOCUMENTS .. General .. Government Documents .. Specifications, standards and handbooks .. Non Government Publications .. Order of precedence.

4 23. DEFINITIONS .. Subassembly .. Unit .. Subsystem .. Vehicle .. Launch Vehicle .. Upper-stage Vehicle .. Space Experiment .. Space Vehicle .. Flight Vehicle .. System .. Combined Systems .. Launch Systems .. On-orbit Airborne Support Equipment (ASE) .. Critical Unit .. Development Test Article .. Reusable Item .. of Activities.

5 Risk Management .. 7 Downloaded from OF CONTENTS(continued) REQUIREMENTS .. Allocation .. Life Cycle Design Requirements .. Methods .. Hardware Qualification .. Qualification Techniques .. Qualification Test Requirements .. Test for Risk Mitigation .. Hardware Acceptance .. Acceptance Test Requirements .. Acceptance Methods .. Test for Risk Mitigation .. Test Plan .. Preparation for Verification Preparation for Analysis.

6 Preparation for Test Activities .. for Inspections .. for Demonstrations .. for Demonstrations .. Improvement .. Verification Activities .. Verification Results .. NOTES .. Shared Database .. Guidance Tables .. 16 TABLES T-1 Factors to Consider When Establishing Test 17 T-2 Type of Subsystem .. 18-21 T-3 Primary Qualification Tests to Identify Failure Mechanism .. 22 T-4 Primary Acceptance Test to Precipitate Failure Mechanism.

7 23 CONCLUDING MATERIAL .. 24 Downloaded from document requires that a process be established todevelop and manage verification requirements to assure that launch and spaceequipment can function correctly and withstand stresses it may encounter during itslife cycle including end-of-life performance requirements. This document isintended for use in developing the detailed verification requirements for a particularproject. The application of these requirements should result in an effectiveverification process and consequently high confidence in achieving successfulspace APPLICABLE DOCUMENTS General.

8 The documents listed in this section are specified in sections 3, 4,and 5 of this STANDARD . This section does not include documents cited in othersections of this STANDARD or recommended for additional information or as every effort has been made to ensure the completeness of this list, documentusers are cautioned that they must meet all specified requirements documents citedin sections 3, 4, and 5 of this STANDARD , whether or not they are listed. Government Documents. Specifications, standards , and handbooks. The following standards andspecifications form a part of this document to the extent specified herein.

9 Unlessotherwise specified, the issues of these documents are those listed in the issue ofthe DEPARTMENT of DEFENSE Index of Specifications and standards (DODISS) andsupplement thereto, cited in the OF DEFENSE STANDARDSMIL-STD-810 Environmental Test Methods andEngineering (USAF) STANDARD General Requirements for Safe Design and Operation of Pressurized Missile and Space (USAF)Electromagnetic Compatibility Requirements for Space from (USAF)Test Requirements for Ground Equipmentand Associated Computer Software Supporting Space Vehicles.

10 (Canceled)MIL-HDBK-340A (USAF)Volume 1 Test Requirements For Launch, Upper Stage & Space Vehicles - Baselines Volume ll - Test Requirements for Launch, Upper Stage & Space Vehicles - Application (USAF)Design, Construction and Testing Requirements for One Of A KindEquipment.(Unless otherwise indicated, copies of federal and military specifications, standards ,and handbooks are available from the DEFENSE Automated Printing Service (DAPS) Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, Government documents, drawings, and publications.)