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| The Gyro-Stabilized-Mount GSM3000 is a platform for devices used in civilian aerial photo-graphy. The purpose of this platform is to stable support the aerial equipment and to compensate for the rotations (roll, pitch, and yaw movements) of the airplane during photo runs. It is a Gyro-Stabilized Mount for a dynamic stabilization of the equipment. |
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| Gyro-Stabilized Mounts for civilian aerial photography are on the market since 1990. Nowadays, they are part of the standard equipment for such or a similar equipment that operates on airplanes. The advantages of a stabilized equipment for aerial photography, especially if applied together with Forward Motion Compensation, are as follows: |
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| Drastic reduction of the angular rates that are caused by turbulences in the atmosphere. This leads to much less image motion during exposure time resulting in a highly enhanced resolution of the taken images. Thereby it is possible to allow longer exposure times and expand aerial missions even under cloudy conditions. |
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| Elimination of temporary arbitrarily occurring roll, pitch, and yaw angles at expo-sures, which are caused by turbulences as well. This leads to highly reduced over-lapping differences between images. Thereby it is possible to save much film or data storage memory by choosing lower degrees of overlap. Nevertheless, the danger of missing overlap gets very low. |
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| The GSM3000 is especially designed to suspend LMK aerial cameras from Carl Zeiss Jena. Other equipment may be suspended as well by applying special adapters. |
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Generally spoken, this mount acts as a controlled gimbal-mounted suspension. But instead of mechanical gimbals and complex mechanical gear drives, the universal joint is implemented as a hydraulic system, mainly consisting of four hydraulic cylinders and two hydraulic servo pumps that control the horizontal attitude smoothly.
While carrying heavy payloads, this kind of suspension guarantees a maximum of stiffness, avoiding the occurrence of natural frequencies, and thereby allows real closed loop stabilization. The mount itself is rather small and lightweight. A patent for this unique solution is pending.
A third control loop compensates the drift angle of the airplane and dynamically gyro-stabilizes deviations from heading.
Additionally to the active compensation, a very effective passive isolation of the rather high frequency vibrations, mainly caused by the engines of the airplane, is incorporated. |
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| The platform mainly consists of four different groups of functionality, which are moving to each other: |
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1
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Base Plate
Main Body
Suspension Ring
Passive Vibration Insulation Ring
Adaptation Plate
Payload (Camera)
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| The Mount GSM3000 operates automatic. This is true for the horizontal stabilization as well as for the drift correction. But it is possible to operate both, the horizontal stabilization and the drift correction, respectively, manually. The mount can be controlled by remote computer. |
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