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NASA’s Launch Services Program developed a standardized workflow using finite element modeling to assess rocket and spacecraft shock and vibration risks. The team applied it while certifying a commercial launch provider’s rocket, reporting that it saved months and helped assess shock during transport. NASA has not identified the provider, mission, or specific findings.
NASA engineers at Kennedy Space Center have developed a standardized computer-modeling workflow to assess how rockets and spacecraft respond to shock and vibration, and recently used it while certifying a commercial provider’s rocket for a NASA mission. The agency says the approach helped its team examine launch conditions and transport-related shock without relying solely on the provider’s vibration test results.
The workflow was developed by the Dynamic Environments Group in NASA’s Launch Services Program Office. It uses a commercial software tool for finite element modeling, a simulation method that divides a complex structure into smaller elements so engineers can estimate how it responds to physical forces. NASA says a template guides the analysis of vibration profiles and shock conditions, making the process more standardized.
For the recent certification, the commercial launch provider supplied vibration testing but not shock testing, NASA reported. The agency’s team determined that shock analysis was needed and used its template to compare possible scenarios, visualize structural responses and examine questions that previously would have required extensive manual modeling. NASA said the engineers verified the provider’s test results for flight environments and gained further insight into shock during transport.
NASA described the workflow as a replacement for older tools and a more repeatable alternative to methods that often depended on rules of thumb, scaling data from earlier missions and engineering judgment. The agency said the team can now conduct the analysis independently rather than request reports or data and wait for them. NASA reported that this has saved months and helped identify risks that had not previously been considered, though it did not provide a breakdown of the time saved or name the specific risks.
Earlier Checks for Launch Stresses
Rocket launch exposes vehicles and payloads to intense vibration, shock and other physical forces. Those stresses can cause wear or contribute to failures, while many problems are much harder to address after a vehicle has left the launch pad. Better analysis before flight can give engineers more information about whether components and spacecraft are prepared for the conditions they will face.
The practical change NASA describes is not a new launch vehicle or a new type of test. It is a more standardized way for its engineers to model and review physical environments. The agency says working through the analysis itself can make it faster to check a provider’s system and help reveal issues that might otherwise be missed. That could support mission preparation by making assessments less dependent on manual work and prior examples, although NASA has not reported a measured change in mission outcomes or failure rates.
The workflow also gives engineers a common template they can use to share knowledge and build modeling proficiency. NASA says analyses can be refined as more flight data becomes available. Those benefits could matter across missions that carry varied payloads, from Earth-observing satellites to planetary spacecraft, but the report describes one recent certification use and does not quantify how widely the workflow has been adopted.
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From Past Data to Modeling
Before adopting this workflow, dynamic-environments engineers often estimated how vibration and shock would affect components by applying rules of thumb or adjusting data from previous missions. NASA said those methods had been used for decades and relied substantially on engineering judgment and simpler approximations of how hardware would behave once assembled and flown.
Finite element analysis is used to simulate a structure by representing it as smaller parts and calculating how those parts may respond to specified forces. NASA’s report says the commercial software itself has existed for decades, but it was not commonly used by the agency’s dynamic-environments specialists for this type of work. The new element is the team’s application of the tool and its standardized template to shock and vibration analysis.
NASA’s Launch Services Program Office oversees launches for spacecraft conducting missions such as Earth observation, planetary exploration and space astronomy. Its role includes checking that launch vehicles and their payloads are prepared for flight. The agency said the workflow supports that work by helping engineers define physical environments and assess whether hardware has been tested to the relevant levels.
Certification Findings Not Disclosed
NASA’s report does not name the commercial launch provider, the mission, or the rocket involved. It also does not publish the modeling results, identify the transport-related shock findings, or state whether the analysis led to changes in hardware, testing or certification requirements. The agency says the work verified the provider’s testing for flight environments, but it does not explain the verification criteria or share the underlying data.
The reported time savings of months are not accompanied by a comparison period, task-by-task accounting or an independent assessment. NASA also has not specified how many other missions have used the template or whether its use will become standard for all relevant certifications. The report presents the capability and its initial use, not a public evaluation of long-term performance.
Further Use Across Mission Reviews
NASA says the workflow can support future assessments as engineers add flight data, refine their models and improve familiarity with the software. The Launch Services Program continues to adopt tools intended to support its review of rockets carrying agency spacecraft. The report does not give a schedule for further deployments or name the next mission expected to use the approach.
The next public indication of its reach would be additional NASA reporting about use on other launch-provider certifications, or details about how modeling results inform testing and hardware decisions. Until NASA releases those details, the reported benefits remain tied to the team’s experience with this recent certification rather than a published comparison across multiple missions.
Key Questions
What did NASA change?
NASA’s Dynamic Environments Group created a standardized finite element modeling workflow for assessing shock and vibration conditions affecting rockets and spacecraft.
Was the software itself newly developed?
No. NASA said the commercial software has existed for decades. The change is that engineers are applying it in a relatively new way for dynamic-environments analysis and using a template to standardize the process.
How was the workflow used in a rocket certification?
NASA said a commercial provider supplied vibration testing but not shock testing. The agency’s engineers determined shock analysis was needed and used the workflow to compare scenarios, examine structural responses and assess transport-related shock.
How much time has NASA saved?
NASA reported that the capability has saved months by letting the team conduct analysis independently and identify risks. The agency did not give a precise duration, comparison baseline or detailed accounting.
Which provider or mission was involved?
The supplied NASA report does not name the commercial provider, rocket or NASA mission. It also does not publish the specific certification findings.
Source: primary
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