| 摘要 |
An automatic buoyancy controller is disclosed for management of lift in thermal airship 20. Data from envelope air temperature sensor 34 and ambient air temperature sensor 38 are input to difference processor 46 which transmits the calculated difference signal 48 to process controller 50/92. Comparing the operator selected difference temperature setpoint value 52 to difference signal 48, process controller 50/92 controls heater 44 operation in a way in which will equalize the comparison, thereby fixing the operator selected value of lift.
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