Das Flugprincip

Das Flugprincip (the Flight Principle) Is A Book About Aviation Written By German Engineer And Inventor Carl Buttenftedt. The Book, First Published In 1884, Outlines Buttenftedts Theories On The Principles Of Flight And Includes Detailed Depictions Of His Flying Machines. Despite Never Actually Achieving Sustained Flight, Buttenftedts Work Was Influential In The Early Development Of Aviation Technology.this Work Has Been Selected By Scholars As Being Culturally Important, And Is Part Of The Knowledge Base Of Civilization As We Know It.this Work Is In The Public Domain In The United States Of America, And Possibly Other Nations.