The Secret of Flight 13: Modern Problems of Flight

[@aniketbhateja9638]

Magnificent work! Thanks for preserving and uploading this work of art.

[@godsgripkitsofficial3452]

Dr. Lippisch thank you for your insight and knowledge learned from one of the greats himself. UOI u guys rock!

[@rapharigoti]

Fantastic!! Thanks for sharing Iowa!❤

[@jaredstokes9895]

Absolutely fantastic series!

[@osmanberkanakdere1011]

Thank you so much Professor and University of Iowa for this magnificent series.

[@alexandrpetrov1110]

Thank you very march!

[@hobbywitch623]

The early quadcopter is here