Cited by 2,404Digital Transformation in IndustryEngineering and Test SystemsReliability and Maintenance Optimization

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index; none of the 21 sources its claims cite is checked for support yet.

The Digital Twin Paradigm for Future NASA and U.S. Air Force Vehicles

Open access
Glaessgen, Edward, Stargel, David·2012·53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 20th AIAA/ASME/AHS Adaptive Structures Conference 14th AIAA

Abstract

Future generations of NASA and U.S. Air Force vehicles will require lighter mass while being subjected to higher loads and more extreme service conditions over longer time periods than the present generation. Current approaches for certification, fleet management and sustainment are largely based on statistical distributions of material properties, heuristic design philosophies, physical testing and assumed similitude between testing and operational conditions and will likely be unable to address these extreme requirements. To address the shortcomings of conventional approaches, a fundamental paradigm shift is needed. This paradigm shift, the Digital Twin, integrates ultra-high fidelity simulation with the vehicle s on-board integrated vehicle health management system, maintenance history and all available historical and fleet data to mirror the life of its flying twin and enable unprecedented levels of safety and reliability.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

The paper proposes the Digital Twin paradigm—an integrated multiphysics, multiscale, probabilistic simulation of an as-built vehicle using best physical models, sensor updates, fleet history, and IVHM data—to mirror the life of its flying twin and improve certification, fleet management, and sustainment. It argues conventional factor-of-safety, similitude, and inspection approaches are inadequate for future NASA and U.S. Air Force vehicles with lighter mass, higher loads, and longer extreme service.

Key findings

  • Conventional certification and sustainment rely on factors-of-safety, similitude, worst-case scenarios, and fleet leaders; factors can be as large as 2.0 depending on material and configuration, a service life factor of 4.0 is applied to well-characterized spaceflight structures, and known flaws must show a safety factor of 1.5 against fracture.
  • The Digital Twin integrates ultra-high fidelity physical models, on-board IVHM sensor data, maintenance history, and historical/fleet data via data mining and text mining; it continuously forecasts vehicle health, remaining useful life, and probability of mission success, and can recommend mission profile changes or activate self-healing mechanisms.
  • Near-term opportunities include the AFRL Digital Twin: Spiral 1 using the F-15 as a testbed, and a NASA approach focused on a small highly critical non-redundant component such as a MEMS.
  • Expected advantages include decreased system weight by reducing reliance on statistical distributions, heuristic design philosophies, physical testing, and assumed similitude, plus increased reliability through continuous monitoring and mitigation of degradation and anomalous events.

Methods

  • Conceptual/vision paper, not an experimental study; it presents the Digital Twin paradigm and requirements, with examples drawn from NASA standards and handbooks including NASA-STD-5001A, NASA-STD-5019, and NASA-HDBK-5010.
  • No sample, dataset, or statistical analysis is reported; the paper discusses conventional approaches, Digital Twin attributes, near-term opportunities, advantages, and influence on national goals.
  • Illustrative figures and tables are used to motivate the paradigm, such as an STS payload launch/landing spectrum and upper-bound fatigue crack growth rate curves estimated as three standard deviations above mean values.

Limitations

  • The paper states the Digital Twin is an ambitious concept “unlikely to attain maturity for many decades,” so a series of intermediate steps is required.
  • The paper states future vehicles may encounter conditions that cannot be foreseen, and long-duration space missions may make conventional inspection and maintenance impossible.
  • Evident from the text: no quantitative validation, implementation results, or performance metrics for a Digital Twin are reported; the work is a concept and roadmap paper.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.2514/6.2012-1818

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 21 cited sources checked · 0 supported · 0 flagged

Show all 7 claims

  • It may state two separate claims as one. 15
  • Probably not a substantial claim. 39
43 of 43
  • The paper relies on this without support.

    Future generations of NASA and U.S. Air Force vehicles will require lighter mass while being subjected to higher loads and more extreme service conditions over longer time periods than the present generation.

    “Future generations of NASA and U.S. Air Force vehicles will require lighter mass while being subjected to higher loads and more extreme service conditions over longer time periods than the present generation.”
  • The paper relies on this without support.

    Future vehicles will have little direct precedent to follow, and in some cases (e.g., long duration space missions) the vehicle may be impossible to inspect and maintain in the conventional sense.

    “Unlike the methods used to insure safety and reliability of existing vehicles that have a clear and wellunderstood legacy, many future vehicles will have little direct precedent to follow, and in some cases (e.g., long duration space missions) the vehicle may be impossible to inspect and maintain in the conventional sense.”
  • The paper relies on this without support.

    Future generations of vehicles will rely on increasingly complex, heterogeneous and multifunctional material forms with increasingly complex failure modes.

    “Future generations of vehicles will rely on increasingly complex, heterogeneous and multifunctional material forms with increasingly complex failure modes.”
  • The paper relies on this without support.

    The extensive physical testing that provided the confidence needed to assure the success of previous missions has become increasingly expensive to perform.

    “Additionally, the extensive physical testing that provided the confidence needed to assure the success of previous missions has become increasingly expensive to perform.”
  • The paper relies on this without support.

    The consequences of failure during a long-duration space mission, where the vehicle is far from home, will almost certainly be catastrophic.

    “Moreover, the consequences of failure during a long-duration space mission, where the vehicle is far from home, will almost certainly be catastrophic.”
  • The paper relies on this without support.

    The Digital Twin concept is unlikely to attain maturity for many decades.

    “However, such an ambitious concept is unlikely to attain maturity for many decades, so a series of intermediate steps is required.”
6 of 6

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Handbook 5010 is identified as both HDBK and STD

    Minor

    The text cites document 5010 as NASA-HDBK-5010, but reference 10 identifies it as NASA-STD-5010.

1 of 1

Citations

Cites

Flagged first, then by citations

Show all 1 references

Research works printed but not linked: 9

  1. Anon, 2008, NASA-STD-5019
  2. Anon, 2008, NASA-STD-6016
  3. Anon, 2001, Version 3, 0, 22267B
  4. Anon, Fracture Control Implementation Handbook for Payloads, Experiments, and Similar Hardware,"NASA-STD-5010,May2005
  5. Anon, 2004, Rules for Construction of Pressure Vessels
  6. Kobryn P.A., 2011, USAF Air Force Research Laboratory, 88ABW-, 01428
  7. Anon, 2006, Simulation-Based Engineering Science: Revolutionizing Engineering Science through Simulation
  8. Anon, 2008, National Research Council, ISBN, 0, 12000
  9. Anon, 2008, National Research Council,ISBN, 0, 12166

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Metadata

Authors
Glaessgen, E., & Stargel, D.
Affiliations
  • Langley Research Center (US)
  • United States Air Force Office of Scientific Research (US)
Venue
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 20th AIAA/ASME/AHS Adaptive Structures Conference 14th AIAA
Published
2012-04-23
OpenAlex
W2046074714
Cited by
2,404
References
1
Citations by year
2026: 214 · 2025: 332 · 2024: 451 · 2023: 381 · 2022: 342 · 2021: 278 · 2020: 211 · 2019: 108 · 2018: 48 · 2017: 13 · 2016: 11 · 2015: 4 · 2014: 6 · 2013: 4
FWCI
11.20
Type
conference paper
Language
en
Open access
Locations
NASA STI Repository (National Aeronautics and Space Administration) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Industrial and Manufacturing Engineering › Digital Transformation in Industry
  • Physical Sciences › Engineering › Control and Systems Engineering › Engineering and Test Systems
  • Physical Sciences › Engineering › Safety, Risk, Reliability and Quality › Reliability and Maintenance Optimization
Keywords
digital twin, integrated vehicle health management, aircraft certification, fleet management, program sustainability, material property variation, maintenance history, safety and reliability

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