Loading...
Please wait, while we are loading the content...
Aerodynamic parameter estimation for the x-43a (hyper-x) from flight data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Morelli, Eugene A. Smith, Mark S. Derry, Stephen D. |
| Copyright Year | 2005 |
| Description | Aerodynamic parameters were estimated based on flight data from the third flight of the X-43A hypersonic research vehicle, also called Hyper-X. Maneuvers were flown using multiple orthogonal phase-optimized sweep inputs applied as simultaneous control surface perturbations at Mach 8, 7, 6, 5, 4, and 3 during the vehicle descent. Aerodynamic parameters, consisting of non-dimensional longitudinal and lateral stability and control derivatives, were estimated from flight data at each Mach number. Multi-step inputs at nearly the same flight conditions were also flown to assess the prediction capability of the identified models. Prediction errors were found to be comparable in magnitude to the modeling errors, which indicates accurate modeling. Aerodynamic parameter estimates were plotted as a function of Mach number, and compared with estimates from the pre-flight aerodynamic database, which was based on wind-tunnel tests and computational fluid dynamics. Agreement between flight estimates and values computed from the aerodynamic database was excellent overall. |
| File Size | 356477 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050209958 |
| Archival Resource Key | ark:/13960/t7zm09m4b |
| Language | English |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Flight Characteristics Flight Conditions Data Acquisition Wind Tunnel Tests X-43 Vehicle Mathematical Models Parameter Identification Aerodynamic Characteristics Stability Derivatives Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
