- Finding a day / time for mAEWing1 design review.
- 5 excitations (3 pitch, 2 roll) captured during flight testing of the rigid vehicle on February 9th
- Preliminary analysis of flight data indicates a 2.6 Hz short period frequency
- May be able to get some parameters out to improve models, including improvement of the pitch damper design
- Investigating cause of a pitch oscillation in the second half of the test run
- Future testing
- Planning on using 3211 excitations targeted at 2 Hz symmetrically and asymmetrically on all surface pairs to enable SISO parameter estimation
- Then will look into multisines, mutually orthogonal square waves, or pseudo random inputs to get data more efficiently
- Additional flight tests likely starting toward the end of February / early March
mAEWing2 Preliminary Design and Manufacturing
- A side meeting will be set up to discuss some mAEWing2 configuration, material selection, and manufacturing options
- CMSoft performed preliminary CFD analysis of the mAEWing2 outer mold line (OML). 12 ft wingspan with an inviscid mesh, analysis performed at Mach 0.1 (34 m/s).
- Preliminary lift and drag polar and CL vs alpha plots generated
- Work on generating a viscous mesh
- mAEWing2 test condition Mach 0.115 (38 m/s)
- Successful working meeting held at UMN February 5 and 6 with UMN, STI, VT, CMSoft, and Schmidt and Associates participating. Each participant presented their approach to modeling ASE systems and a simplified example problem was generated. Homework was to work through the simplified model and compare approaches.
- Working through a simplified three body problem using several modeling approaches (Langrangian, mean axis, and force/torque balance equations) to find the benefits, drawbacks, and assumptions in each approach to find a good method for modeling ASE vehicles. Active email dialog and additional side meetings will be set up.
Meeting Presentations on: GitHub