AIAA Certification by Analysis Uncertainty Quantification Working Group

Uncertainty Quantification Challenge Problem




Graphical representation of the NASA CRM with vertical tail plane and with a notional antenna radome shown in green.
Graphical representation of the NASA CRM with vertical tail plane and with a notional antenna radome shown in green.



Goals of the Challenge Problem

The goal is for the aerospace community to develop V&V and UQ frameworks applicable to CbA and demonstrate them on a relevant test case

This involves understanding of:
- Multi-disciplinary sources of uncertainty
- How to categorize and quantify sources
- How to propagate heterogeneous sources of uncertainty
- Determine the impact and relevance of uncertainties w.r.t. certification regulations

The proposed Challenge Problem serves as a testbed to achieve the goals
- It should be neither seen as a pure simulation exercise nor as a full certification of an actual aircraft alteration
- It serves as an industrial-relevant case to develop V&V and UQ frameworks for CbA
The Challenge Problem Overview can be found at AIAA Engage Link


AIAA Engage

The AIAA Engage platform is used for communication. Please join our community at Certification by Analysis Uncertainty Quantification Community

Meeting Notes

Meeting Notes are posted to the AIAA Engage Community after each meeting.

April 30th, 2026 Meeting Slides and Meeting Recording and
March 19th, 2026 Meeting Slides and Meeting Recording
January 29th, 2026 Meeting Slides
November 13th, 2025 Meeting Slides
October 2nd, 2025 Meeting Slides
August 28th, 2025 Meeting Slides
June 26th, 2025 Meeting Slides and Meeting Recording

Reference Files

Last Updated: May 21, 2026
Geometry File README

NASA's Common Research Model Website

NASTRAN Input Files for Satcom Assembly in Imperial Units
NASTRAN Input Files for Satcom Assembly in SI Units
Stiffness Matrix for Simple Model in Imperial Units
Stiffness Matrix for Simple Model in SI Units

Design Description of the Satcom Assembly
Example Reserve Factor Calculation with Simple Model
Distribution Data for Uncertain Structural Quantities

Full Scale CRM Geometry without Radome (.igs)
Full Scale CRM Geometry without Radome (.stp)

Full Scale CRM Geometry with Radome (.igs)
Full Scale CRM Geometry with Radome (.stp)

Aero Reference Data

Aero Reference Data Presentation
Aero Reference Data Read Me
Sensor Location Information for Aero Reference Data
A1 Data
A2 Data
A3 Data
B Data
C Data
D Data
E Data

Frequently Asked Questions

A Frequently Asked Questions document is maintained and updated regularly with questions from participants and responses from the organizing committee.

V4 - May 15th, 2026

CbA UQ Steering Committee

Philipp Bekemeyer German Aerospace Center (DLR)
Sven Geisbauer German Aerospace Center (DLR)
John Schaefer The Boeing Company
John Macomber The Boeing Company
Thomas Wittenberg The Boeing Company
Simon Coggon Airbus Operations
Matthias Held Airbus Operations
Marcus Gojny Airbus Operations
Casey Denham NASA's Langley Research Center
Seung Yoo NASA's Armstrong Flight Research Center


For any questions, please contact the organizers at aiaa.uq4cba.sc@gmail.com

NASA Official Responsible for Content
Casey Leigh-Anne Denham

Last Updated
May 21st, 2026