Need help on Aluminum propeller

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Discussion Overview

The discussion revolves around the design and application of an aluminum propeller, specifically a 1.2-meter diameter propeller intended for powered paragliders. Participants are exploring the feasibility of the design, including weight considerations and material choices, while seeking expert contacts for further guidance.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant seeks advice on propeller design and potential contacts for expertise in the field.
  • Another participant expresses skepticism about achieving the desired weight of 1000 grams, suggesting that a very thin blade would be necessary with metal materials.
  • A further contribution specifies the design would use a 1mm thick aluminum alloy 6063-T6 "skin" with internal rib support to meet weight and integrity requirements.
  • Clarification is provided regarding the production method, with one participant confirming that casting would be the intended approach.
  • One participant acknowledges confusion about the manufacturing process initially discussed.
  • A participant apologizes for a double post and directs others to a live thread for further discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of the proposed design, with differing views on the weight and structural integrity of the propeller. The discussion remains unresolved regarding the best approach and materials for the design.

Contextual Notes

There are limitations regarding the assumptions about material properties and design integrity, as well as the specifics of the manufacturing process that may affect the outcome.

Sirmisko
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I need to contact who ever would be authority on propeller design and applications.

In short, the Idea is to build a Aluminum prop, 1.2 meters diameter with weight of about 1000 grams. Targeted application would be primarily for powered para gliders. I need some arguments for and against before it leaves blueprint stage.

If you can point me in the right direction as to who the best contact for me would be, I would be ever so grateful.

If any of you have experience on the issue, comments are more than welcome.
 
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I'm afraid that I can't help you with that. It does seem to me, however, that you'll have to have an awfully thin blade to keep the weight that low with metal.
 
Danger said:
I'm afraid that I can't help you with that. It does seem to me, however, that you'll have to have an awfully thin blade to keep the weight that low with metal.


Design calls for 1mm thick Al aloy 6063-T6 "skin" with internal rib support in order to achieve desired weight yet maintain the integrity needed for the application.
 
Ahhhh...
I thought that you were talking about milling or casting one. Still can't help you, but it makes more sense now.
 
Last edited:

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