1 / 8

Tennessee Science Olympiad 2013

Tennessee Science Olympiad 2013. Helicopters (Division B). Science Olympiad Coaches Workshop University of Tennessee October 27, 2012 Betsy White (bwhite6@utk.edu). Terminology. Motor - rubber band (thick vs. thin) Must be removable for inspection May be lubricated

ezekiel
Download Presentation

Tennessee Science Olympiad 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tennessee Science Olympiad 2013 Helicopters (Division B) Science Olympiad Coaches Workshop University of Tennessee October 27, 2012 Betsy White (bwhite6@utk.edu)

  2. Terminology • Motor- rubber band (thick vs. thin) • Must be removable for inspection • May be lubricated • Motor stick- “body” of the helicopter; anchors rubber band • Rotors- rotating surfaces (propellers) • Max of 3 • Max diameter of 30.0cm • Must be home-made • Rotor shaft- wire connecting moving rotor to rubber band • Rotor thrust bearing- holds wire allowing it to freely rotate Helicopter 2013

  3. Common designs One moving rotor, one fixed rotor Two moving rotors Motor Stick options: • Single motor stick • Use clay to balance • Double motor stick • Hollow tube Helicopter 2013

  4. Rules/Specifications • Must weigh at least 3 grams (without rubber band) • Kits are ok, but no pre-built parts • No commercially available propellers • Balsa wood disc ( ≥ dime) on the tip • Rotors: • Home-made, max of 3, max diameter of 30cm • No max on # of blades or their width (chord) • Motors must be rubber, removable • inspected but are not weighed • Labeled with team name • Flight logs Helicopter 2013

  5. Flight logs Six parameters for at least 10 flights prior to competition • Required data parameters for each flight: • Flight time • Number of turns in motor before liftoff • Motor size (length) before windup • Some suggested parameters are: (pick 3 or add your own) • Torque at launch • Number of turns remaining after helicopter lands • Estimated peak flight height • Variance from starting point (how far your helicopter drifted) • Don’t forget to label with team name Helicopter 2013

  6. General Tips • Lightweight but sturdy • Practice launching • Don’t do practice flights outside (use school gym) • Winder 10:1 or 15:1 preferred • O-ring to aid in transferring motor from winder • Fast-drying glue: • Ambroidcement (easily softened with acetone) • Duco cement • CA glue (cyanoacrylate) – super glue • Bearings (i.e. teflon washers) • Good rubber (optional lubricant) – store in ziploc bag • Good balsa wood (not warped) Helicopter 2013

  7. Competition • 8 minute “Flight period” • Only 2 official flights using 1 or 2 helicopters • all flights official unless otherwise declared before launch • No extra time for repair/recovery • Only the better flight (out of the 2) will be scored. • Second is tie-breaker Penalties Helicopter 2013

  8. Materials/Resources • Science Olympiad Student Center • http://scioly.org/wiki/index.php/Helicopters • Endurance Flying Helicopter Models for Science Olympiad:Parlor Copter Helicopter Kit • http://loewenton.org/G1/science_olympiad/balsa-model-helicopter-kits.htm • A lot of good information on building, not just for buying materials • Uses outdated specifications • YouTube Helicopter 2013

More Related