Heavy payload parachute ground disconnecting device
Inactive Publication Date: 2007-04-12
IRVIN INDS CANADA
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
[0008] It is, therefore, an object of the invention to provide a parachute ground disconnecting device for heavy payloads that is simply operable and highly reliable.
[0010] It is yet further an object of the invention to provide a heavy payload parachute ground disconnecting device that is simple to manufacture.
Problems solved by technology
Unless the payload is spontaneously disconnected from the parachute upon landing there is an unacceptable high risk that the payload is dragged by winds engaging the parachute, making retrieval of the parachuted payload extremely difficult and dangerous, if not impossible.
Furthermore, there is a significant danger that the parachuted payload is toppled over while being dragged resulting in damage or loss of the parachuted payload such as a vehicle.
However, when designing a parachute ground disconnecting device there is a significant problem to overcome.
On the other hand, increasing the RLP to, for example, 40% to ensure spontaneous disconnecting upon landing, results in an unacceptable high risk of disconnection while the payload is still airborne.
Method used
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Embodiment Construction
[0041] Referring to FIGS. 1a to 1c, a cross sectional view of a preferred embodiment of a heavy payload parachute ground disconnecting device 100 according to the invention is shown in three stages of operation, in a holding position, in a transient position shortly after release, and in an open position, respectively. While the invention will be described employing a GD 500 parachute ground disconnecting device as actuator 102 for simplicity, it will become apparent to those of skill in the art that the heavy payload parachute ground disconnecting device 100 is easily modified for employing as actuator 102 other devices providing a similar functionality. The heavy payload parachute ground disconnecting device 100 comprises a supporting structure 104. Disposed in an upper portion of the supporting structure 104 is a connecting mechanism 106 for connecting the supporting structure 104 to a parachute. The connecting mechanism 106 is, for example, constructed as a cylindrical bore for ...
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The present invention relates to a heavy payload parachute ground disconnecting device. The device comprises an actuator for keeping a holding mechanism in a locked position during a predetermined time interval and after elapse of the predetermined time interval for releasing the holding mechanism when a force acting on the actuator is below a predetermined threshold. A latch mechanism releases a link assembly connected to the payload when itself being released from the holding mechanism. In the holding position the latch mechanism transfers a predetermined portion of a payload force for acting on the actuator within an operational range of the same. The device is highly advantageous by providing a simple, yet highly flexible, design for numerous payload ranges.
Description
[0001] This application claims benefit from U.S. Provisional Patent Application No. 60 / 723,437 filed Oct. 5, 2005 the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates generally to the field of parachute accessories, and in particular to a device for automatically disconnecting a heavy parachuted payload from a parachute upon landing. BACKGROUND OF THE INVENTION [0003] In parachuting a payload from an airplane it is important that the parachuted payload is securely connected to the parachute during descent. It is also important that the payload is spontaneously disconnected from the parachute upon landing. Unless the payload is spontaneously disconnected from the parachute upon landing there is an unacceptable high risk that the payload is dragged by winds engaging the parachute, making retrieval of the parachuted payload extremely difficult and dangerous, if not impossible. Furthermore, there is a significant d...
Claims
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Login to View More IPC IPC(8): B64D17/02
CPCB64D17/383
Inventor MILJIC, NEDELJKO
Owner IRVIN INDS CANADA