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Helios prototype vehicle mishap: technical findings, recommendations, and lessons learned (Document No: 20080041594)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | DelFrate, John H. |
| Copyright Year | 2008 |
| Description | Instability associated with the Helios Prototype HPO3-2 vehicle was a nonlinear stability and control problem involving complex interactions among the flexible structure, the unsteady aerodynamics, the flight control system, the environmental conditions, and vehicle flight dynamics. Analysis tools and solution techniques were constrained by conventional and segmented linear methodologies that did not provide the proper level of complexity to understand the technology interactions on the vehicle s stability and control characteristics. More advanced, multidisciplinary (structures, aeroelastic, aerodynamics, atmospheric, materials, propulsion, controls, etc) "time-domain" analysis methods appropriate to highly flexible, "morphing" vehicles are required. Ground-test procedures and techniques appropriate to this class of vehicle are needed to validate new analysis methods and predictions |
| File Size | 21353892 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080041594 |
| Archival Resource Key | ark:/13960/t7rn84n47 |
| Language | English |
| Publisher Date | 2008-09-10 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Lessons Learned Helios 2 Ground Tests Stability Prototypes Unsteady Aerodynamics Aerodynamics Flight Control Aeroelasticity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
