English Translation

C 3 with decree of 3l.3.42 - same B-No. - sent photocopies and the summary material attached here. The fulling of the device consists of about 2.5 l Galician petroleum nit a specific weight of O.78. Around the inner wall of the liquid vessel is placed a corrugated cardboard, in which a very slowly burning snake-shaped fuse is incorporated. At the lower edge of the vessel - according to the number of turns of the fuse - numbers of 1 - 13 have been struck. These are the ignition points for the corresponding hours of the lunar burning time. At the bottom part of the balancing grit is attached to a hook the hemp cord and at it the steel wire. The mode of action is the following: The balloon is released from the take-off position with a certain gas filling. The height adjustment device is filled. Depending on the intended flight time and according to the wind conditions, the fuse is lit for a certain burning time. The flap located at the bottom of the compensating unit is pulled up and is held in a horizontal position by a string leading through the fuse, so that the outlet pipe (fall pipe) protrudes into the pot filled with kerosene. Before letting off the balloon, the closing cone is also turned out, which releases the penetration opening in the riser tube. The balloon will first reach its highest possible height and release gas through the overpressure valve. As the balloon rises, the air in the levelling tank of the altitude device blows through the outlet tube under atmospheric ground pressure, so that the air pressure corresponding to the surrounding environment is formed in the completely closed container. Under the influence of the gas release, the balloon will now begin to sink, i.e. it will enter denser air layers. Now, under the effect of the negative pressure present in the balance holder, petroleum will be extracted from the main container and lifted by lifters.