Falkner#

In order to validate pySailingVLm software, comparison between swept and unswept rectangluar wings were done (according to Fig. 4 from [Kat85]). Theoretical data was taken from [Fal48] (table 25, 26 and 28) with following assumptions: aspect ratio equal to 2, 126-vortex solution, 0, 30 and 45 degree sweep angle.

Table 5 Results from pySailingVLM code of a lift coefficient slope for different sweep angle.#

Sweep angle degree

Falkner

pySailingVLM

0

2.524

2.520

30

2.480

2.447

45

2.359

2.308
../../_images/falkner_comparison.png

Fig. 20 Comparison between swept and unswept rectangluar wings. Figure generated by author.#

The lift coefficient slope for calculated wings and spanwise lift distributions calculated by pySailingVLM are aligned with Falkner’s results.