Airfoil generator hotwire
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Use some kind of heavier wood for the spar (spruce works well) for structural stability, cover in monokote and shrink. Use that to generate the airfoil rib to the size you want and laser cut them from balsa. You can go somewhere like here to get the data for the airfoil you've selected and import it into a CAD program. Rib-and-spar construction, with monokote covering. Cons: Not as accurate, easy to wreck with even a small mistake. Cut the bottom profile, then replace the bottom template with the top one and cut the top profile. Hot wire foam cutter, using basswood (or similar) templates to guide the cutter along. I am using a symmetrical NACA0018 profile.įrom my experience (SAE Aero) you can do it two ways. I simply do not have the time to go back and try and perfect this process, so my question is - Does anyone know of a precise, easy, and reasonably cheap method for large airfoil production? I am concerned more about functionality than durability at this point. For those that know anything about fluid mechanics, this is unsatisfactory as even the slightest geometric impurity could compromise the efficiency (and appearance) of this turbine. This process ended up yielding undesirable results, as the finish on the foam was poor and the surfaces uneven. We used an aluminum plate cut to the exact cross sectional dimension of the airfoil as a path for the hot wire cutter to follow. We made the airfoil core out of polystyrene foam using a hot wire cutter. As a part of the project, we must construct the airfoils that will drive the turbine rotor. Myself and a team of student engineers are designing a vertical axis wind turbine (VAWT) for our senior capstone project. The AskEngineers Q2 thru Q4 2020 Salary SurveyĢ020 List of engineers willing to be interviewedĢ019 List of engineers willing to be interviewed Limit the use of engineering jokes.Ĭall for Engineers: Tell us about your job! (16 July 2020) No low-effort one-liner comments, memes, or off-topic replies. Answers must contain an explanation using engineering logic, and assertions of fact must be supported by links to credible sources.īe substantive.
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