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Guidance and control of an autonomous soaring uav (Document No: 20070005019)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Allen, Michael J. |
| Copyright Year | 2007 |
| Description | Thermals caused by convection in the lower atmosphere are commonly used by birds and glider pilots to extend flight duration, increase cross-country speed, improve range, or simply to conserve energy. Uninhabited Aerial Vehicles (UAVs) can also increase performance and reduce energy consumption by exploiting atmospheric convection. An autonomous soaring research project was conducted at the NASA Dryden Flight Research Center to evaluate the concept through flight test of an electric-powered motor-glider with a wingspan of 4.27 m (14 ft). The UAV's commercial autopilot software was modified to include outer-loop soaring guidance and control. The aircraft total energy state was used to detect and soar within thermals. Estimated thermal size and position were used to calculate guidance commands for soaring flight. Results from a total of 23 thermal encounters show good performance of the guidance and control algorithms to autonomously detect and exploit thermals. The UAV had an average climb of 172 m (567 ft) during these encounters. |
| File Size | 7529839 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070005019 |
| Archival Resource Key | ark:/13960/t6wx2c695 |
| Language | English |
| Publisher Date | 2007-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Flight Tests Convection Currents Energy Consumption Pilotless Aircraft Air Currents Climbing Flight Conservation Estimating Automatic Pilots Autonomy Soaring Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
