TECHNICAL MANUAL
TECHNICAL MANUAL } No. 1-820 *TM 1-320 WAR DEPARTMENT, W ASHlNGTON, Pebr·um·y 11, 1941. AIRSHIP AERODYNAMICS Prepared under direction of Chief of the Air Corps SroriON I. General. Paragraph Definition of aerodynamics__________________ 1 Purpose and scope________ _____ __ ______ _____ 2 Importance -------------------------------- 3 Glossary of terms____ _____ _____________ ____ 4 Types of airships--------------------------- 5 Aerodynamic forces_______________ __________ 6 ll. Resistance. Fluid resi&ance___________________ _________ 7 Shape coefficients_______ ____________________ 8 Coefficient of skin friction_ __________________ 9 Resistance of streamlined body-------------- 10 Prismatic coefficient------------------------ 11 Index of form efficiency_______ _____________ 12 lllustrative resistance problem_______________ 13 Scale effect-------------------------------- 14 Resistance of completely rigged airship______ 15 Deceleration test --------------------------- 16 III. Powe...