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Use of Shuttle Heritage Hardware in Space Launch System (SLS) Application-Structural Assessment.

N180001125

Publication Date	2018
Personal Author	Aggarwal, P.; Booker, J. N.
Page Count	10
Abstract	NASA is moving forward with the development of the next generation system of human spaceflight to meet the Nation's goals of human space exploration. To meet these goals, NASA is aggressively pursuing the development of an integrated architecture and capabilities for safe crewed and cargo missions beyond low-Earth orbit. Two important tenets critical to the achievement of NASA's strategic objectives are Affordability and Safety. The Space Launch System (SLS) is a heavy-lift launch vehicle being designed/developed to meet these goals. The SLS Block 1 configuration (Figure 1) will be used for the first Exploration Mission (EM-1). It utilizes existing hardware from the Space Shuttle inventory, as much as possible, to save cost and expedite the schedule. SLS Block 1 Elements include the Core Stage, "Heritage" Boosters, Heritage Engines, and the Integrated Spacecraft and Payload Element (ISPE) consisting of the Launch Vehicle Stage Adapter (LVSA), the Multi-Purpose Crew Vehicle (MPCV) Stage Adapter (MSA), and an Interim Cryogenic Propulsion Stage (ICPS) for Earth orbit escape and beyond-Earth orbit in-space propulsive maneuvers. When heritage hardware is used in a new application, it requires a systematic evaluation of its qualification. In addition, there are previously-documented Lessons Learned (Table -1) in this area cautioning the need of a rigorous evaluation in any new application. This paper will exemplify the systematic qualification/assessment efforts made to qualify the application of Heritage Solid Rocket Booster (SRB) hardware in SLS. This paper describes the testing and structural assessment performed to ensure the application is acceptable for intended use without having any adverse impact to Safety. It will further address elements such as Loads, Material Properties and Manufacturing, Testing, Analysis, Failure Criterion and Factor of Safety (FS) considerations made to reach the conclusion and recommendation.
Keywords	Space launch system (sls) Heavy lift launch vehicles Manned space flight Structural analysis Space shuttle boosters Skirts Fracture mechanics Lessons learned Failure analysis Loads (forces)
Source Agency	National Aeronautics and Space Administration
NTIS Subject Category	84E - Space Launch Vehicles & Support Equipment
Corporate Authors	National Aeronautics and Space Administration, Huntsville, AL. George C. Marshall Space Flight Center.
Supplemental Notes	Text in English.Presented at AIAA Science and Technology Forum and Exposition (AIAA SciTech) , Kissimmee, FL, United States, 8-12 Jan. 2018.Distribution Note: Publicly available, Unlimited, Work of the U.S. Government - Public use permitted. CASI.
Document Type	Conference Proceedings
NTIS Issue Number	201815

Use of Shuttle Heritage Hardware in Space Launch System (SLS) Application-Structural Assessment.

Use of Shuttle Heritage Hardware in Space Launch System (SLS) Application-Structural Assessment.
N180001125

Publication Date	2018
Personal Author	Aggarwal, P.; Booker, J. N.
Page Count	10
Abstract	NASA is moving forward with the development of the next generation system of human spaceflight to meet the Nation's goals of human space exploration. To meet these goals, NASA is aggressively pursuing the development of an integrated architecture and capabilities for safe crewed and cargo missions beyond low-Earth orbit. Two important tenets critical to the achievement of NASA's strategic objectives are Affordability and Safety. The Space Launch System (SLS) is a heavy-lift launch vehicle being designed/developed to meet these goals. The SLS Block 1 configuration (Figure 1) will be used for the first Exploration Mission (EM-1). It utilizes existing hardware from the Space Shuttle inventory, as much as possible, to save cost and expedite the schedule. SLS Block 1 Elements include the Core Stage, "Heritage" Boosters, Heritage Engines, and the Integrated Spacecraft and Payload Element (ISPE) consisting of the Launch Vehicle Stage Adapter (LVSA), the Multi-Purpose Crew Vehicle (MPCV) Stage Adapter (MSA), and an Interim Cryogenic Propulsion Stage (ICPS) for Earth orbit escape and beyond-Earth orbit in-space propulsive maneuvers. When heritage hardware is used in a new application, it requires a systematic evaluation of its qualification. In addition, there are previously-documented Lessons Learned (Table -1) in this area cautioning the need of a rigorous evaluation in any new application. This paper will exemplify the systematic qualification/assessment efforts made to qualify the application of Heritage Solid Rocket Booster (SRB) hardware in SLS. This paper describes the testing and structural assessment performed to ensure the application is acceptable for intended use without having any adverse impact to Safety. It will further address elements such as Loads, Material Properties and Manufacturing, Testing, Analysis, Failure Criterion and Factor of Safety (FS) considerations made to reach the conclusion and recommendation.
Keywords	Space launch system (sls) Heavy lift launch vehicles Manned space flight Structural analysis Space shuttle boosters Skirts Fracture mechanics Lessons learned Failure analysis Loads (forces)
Source Agency	National Aeronautics and Space Administration
NTIS Subject Category	84E - Space Launch Vehicles & Support Equipment
Corporate Authors	National Aeronautics and Space Administration, Huntsville, AL. George C. Marshall Space Flight Center.
Supplemental Notes	Text in English.Presented at AIAA Science and Technology Forum and Exposition (AIAA SciTech) , Kissimmee, FL, United States, 8-12 Jan. 2018.Distribution Note: Publicly available, Unlimited, Work of the U.S. Government - Public use permitted. CASI.
Document Type	Conference Proceedings
NTIS Issue Number	201815