Download or read book Lift Distribution and Longitudinal Stability of an Airplane written by Carl Topfer and published by . This book was released on 1931 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preliminary calculation of the airplane polar and hence of the flight performances and characteristics rests on the assumption of an elliptical lift distribution at all altitudes. For large angles of attack below C(sub a (sub max)), this method of calculation yields no satisfactory agreement with measurements made in flight. An attempt is made to eliminate the errors in the preliminary calculation by the assumption of a disturbance of the lift distribution in this angle-of-attack range, which is so important for the constructor. An explanation is also given of the great differences found in flight with and without propeller slipstream.