Die Feldkomponentenmühle: Ein Gerät zur Messung der drei Komponenten des luftelektrischen Feldes und der Flugzeugeigenladung bei Flugzeugaufstiegen

Recording the atmosperic-electric potential gradient from an aeroplane it is very useful to get all the three field-components. This is the case especially in investigations in greater altitudes and in thunderclouds. In this paper an apparatus is described working on the principle of the ‘Feldmühle’ (field strength meter) and giving simultaneous recording of the atmospheric-electric potential gradient separated in the three rectangular components of the field. Furthermore a method is pointed out to separate the field of the own charge of the aeroplane and to record this one separately. This enables the ‘Feldkomponentenmühle’ (field component meter) to be used in motor driven aeroplanes.