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Part INonrigid Airships
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airship envelope angle Army assumed attached axis B. F. Goodrich ballast ballonet balloon bending cable Captive Balloons car suspension catenary cement cent center of gravity circular computed construction control surfaces cross-section curvature curve deflection determined diagram diameter diaphragms empennage engines fabric tension factor factor of safety Figure fins Forlanini gas pressure hence horizontal inflation internal pressure Italian keel leakage length lift load located longitudinal lower manometer maximum Maybach McCook Field Navy nonrigid airships nose battens nose stiffening outrigger panel patch plane plumb-bobs pontoon propellers resistance rigid rip-cord rip-panel Ronald Aeronautic Library rope finger rubber rudder scoops seams semirigid sewing shape shear ship speed static steel tube strength stresses superpressure tank tape tests theory transverse Type Airships Umberto Nobile United States Army valve velocity vertical volume water model weight width wires Zodiac