◆ SpookStack

Pee | ‘S Me - @. Does trail vary with sound? (spurts) Le 12, Effect on clouds. | . = a, Opened path thru clouds, 5 : Ly b. Forced cloud or mists. : ¢, Reflected on cloud, . d.. Showed thru cloud. . : 13. Lights. ' a, Reflected OF aliached, x b, Laminous Lo, P ¢. Blinked on and off in relation to speed. é b Aerodynamic list of fuselage. i €. Vertical jet. : da. Rotating cylinder or cone. : @. Aerostatic Uf (balloon or dirigible). ; 18. Propulston. . &. Propeller or jet. b Rotor, . ¢. Aerodynamic vanes (flapping or oscillating) (Katz Mayer effect). : ad. Visible exhaust or jet openings. : 16, Control and stability. * Pins oo b. Stabllizers (horizontal or vertical), (1) Size. . @) Shape. (8) Location.