Method for altitude control and/or pitch angle control of airships, and an airship having a device for altitude control and/or pitch angle trimming
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Feb 7, 2002
app pub date -
Feb 22, 2001
filing date -
Feb 23, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for altitude control of airships in all the speed ranges which occur during operation has the following features: a) above a predetermined upper speed threshold value, the altitude of the airship is essentially controlled by at least one elevator (5); b) in the range between the upper speed threshold value and a predetermined lower speed threshold value, the altitude of the airship is controlled by aerodynamic lift or downward force which can be varied independently of the airspeed and incidence angle and is produced by aerodynamic lifting bodies; and c) below the lower speed threshold value, the altitude of the airship is controlled by means of devices which produce vertically acting thrust. An airship which is suitable for carrying out the method has a fuselage, forward propulsion means and aerodynamic lifting bodies for producing aerodynamic lift bodies for producing aerodynamic lift which, above a lower threshold value of the airspeed, can be varied independently of said airspeed and independently of the incidence angle, and can be influenced by means of a control device.
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