DESIGN 2: SADDLE

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Inspiration :

The inspiration for our saddle design came from our communication with the Classic Rotors Museum. We talked with them to see what had worked for them in their museum to display their CH-21. By using a design that we already knew would work, we were able to focus on the weight optimization and aesthetics portions of our design.

Ease of Manufacturing & Repair :

We also are focusing on renewability and easy manufacturing. We used parts already in existence for the convenience of easy repair if the time was ever to come. We wanted to minimize special made parts as much as possible. We only have two special made parts which are the structure themselves.

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Design Decisions :

We did the truss frame vs mimicking the solid body from our inspiration because the larger surface area would be more susceptible to moving forces from the wind. The frame allows for more air flow so it could more easily be outside in stronger wind conditions.

Supporting Structure:

We we are able to make our design light and structurally sound by utilizing a frame and truss design. We attached the saddle frames together with poles that offer 2D motion because you can see the helicopter is slanted at different angles and we wanted to be able to produce one design for both sides.

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Classic Rotors :

The saddle design is an adaptation of a CH-21 crutch implemented in the Classic Rotors Helicopter Museum. It is sturdier and more eye appealing than its plywood predecessor. It incorporates a crossbar that detaches for easy mounting in segments.

Materials :

The design differs from our Top Mount design in the way that it structurally attaches directly to the helicopter body. This design can be built from lightweight metal with welded crossbeams, or it can be manufactured from lightweight materials like carbon fiber. Recycled tire strips offer a positive environmental impact as they provide scratch protection and a good grip between surfaces.

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ADDRESSING YOUR CONCERNS...

We heard you during the feedback meeting that there was worry about the helicopter not being able to hold the structure of our saddle design. So we want to share with you that this idea is currently being used at another museum and we took it and improved it to be lighter, more durable, and more aesthetically pleasing. As you can see in the photos, a full sized man is able to stand atop the helicopter. In the photo of the saddle their are using you can see it is clearly made of a lightweight metal. We intend that our design would be made of similar material and use less material to make it even lighter.