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Johns Web Site
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Date: 7-4-2016
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Number of Hours: 4.00
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Manual Reference:
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Brief Description: OAT, Static & Pitot, Wing to Fuselage Connector
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I spent some time today figuring out how to design a simple interconnection system that would provide automatic connection of the O.A.T. sensor, and the pitot/static lines when the wing engages the fuselage. I want it automatically made because I will surely forget it sometime in the future, and landing without a working airspeed indicator can significantly raise the pucker factor.
The connection concept was relatively simple to work out, but finding a location with a sufficient flat surface and free of interference with other items in the wing and fuselage, was difficult. The best position seems to be between the tripod and the aileron joiners in a vertical orientation. If this does not work out, there are a couple other, but more complicated possibilities.
The connector halves will mount to the inboard surface of the inboard left wing rib, and the fuselage skin. In the CAD screen captures, the green block is a ΒΌβ thick, G10 fiberglass. The two white components are simplified representations of McMaster-Carr, Air and Water Quick-Disconnect Tube Coupling, part # 5012K55. The dark colored conical components are simplified representations of same battery springs used for the fuel sender connection. The yellow block is 5/8β thick Delrin or Nylon. It supports two S.S. pan head screws and washers that the tip if the battery springs will contact, and two 5/16β drilled holes that the O-Rings on the Quick-Disconnect Coupling will seal against.
Fabrication is underway. Hopefully, I will have the results tomorrow.
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Connector Viewed From Wing Side
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Connector Viewed From Fuselage Side
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Fabrication Underway
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