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Space shuttle debris impact tool assessment using the modern design of experiments
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | DeLoach, Richard Rayos, Elonsio M. Larsen, Curtis E. Campbell, Charles H. Rickman, Steven L. |
| Copyright Year | 2007 |
| Description | Complex computer codes are used to estimate thermal and structural reentry loads on the Shuttle Orbiter induced by ice and foam debris impact during ascent. Such debris can create cavities in the Shuttle Thermal Protection System. The sizes and shapes of these cavities are approximated to accommodate a code limitation that requires simple "shoebox" geometries to describe the cavities -- rectangular areas and planar walls that are at constant angles with respect to vertical. These approximations induce uncertainty in the code results. The Modern Design of Experiments (MDOE) has recently been applied to develop a series of resource-minimal computational experiments designed to generate low-order polynomial graduating functions to approximate the more complex underlying codes. These polynomial functions were then used to propagate cavity geometry errors to estimate the uncertainty they induce in the reentry load calculations performed by the underlying code. This paper describes a methodological study focused on evaluating the application of MDOE to future operational codes in a rapid and low-cost way to assess the effects of cavity geometry uncertainty. |
| File Size | 2436805 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070003492 |
| Archival Resource Key | ark:/13960/t0zp90s7g |
| Language | English |
| Publisher Date | 2007-01-01 |
| Access Restriction | Open |
| Subject Keyword | Space Transportation And Safety Uncertain Systems Damage Assessment Thermal Protection Space Debris Space Shuttles Polynomials Space Shuttle Orbiters Impact Damage Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
