Aviation aux Etats-Unis : la pilote féminine Mrs. Bobbi Trout, 18/07/1930. - 1 photo - Photo n° 229711
Photo n°
229711
:
WATCH YOUR CREDIT LINE: FROM WIDE WORLD PHOTOS. 699673 – THE EGGS AS A VIBRATION-DETECTOR FOR AIRCRAFT MOTORS. - LOS ANGELES, CALIF.—Miss Bobbie Trout, Los Angeles aviatrix, tests the Dawn motor which she plans to use in her attempt to establish a new altitude record women, using an egg for an indicator of motor vibration-Note that although the engine is revolving at high speed, and that she holds the disconnected wires from only cylinder, the egg is perfectly still in the spoon which is clamped to the motor. 7-18-30. [Actualit] [Wide World Photos]
