DRAFT
Paper Hang Glider
Hang Glider Sail Construction, Performance and Engineering = (Sail Weight) + ( Sail Tensile Strength ) + (Sail Tear Strength ) + (Sail Water Resistance) + (Sail Recycle Content)
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Mid-Term Report:
One element of this report will be the cost accounting of the $2,000. start-up grant.
Final Report:
The final report will include a description of the final design and the team's assessment of their novel approaches to achieving the performance factors listed in the scoring protocol. It will also include a description of the methods used to determine the sail recycle content and a detailed description of any functional coatings or polymers employed in the fabrication of the sail. The final report will include a 5-minute video illustrating the highlights of the project.
Sail Construction, Performance and Engineering:
Sail Weight = Total finished sail weight (sail + battens + grommets)
(weightmax - weight)
Score = 10______________
(weightmax - weightmin)
Sail Tensile Strength = TAPPI T494
(Tensile Strength) - (Tensile Strength)min
Score = 10 _________________________________
(Tensile Strength)max - (Tensile Strength)min
Sail Tear Strength = TAPPI T414
(Tear Strength) - (Tear Strength)min
Score = 10______________________________________
(Tear Strength)max - (Tear Strength)min
Sail Water Resistance = TAPPI T441 Cobb Size Test
(Cobb Test) - (Cobb Test)min
Score = 10_____________________________
(Cobb Test)max - (Cobb Test)min
Sail Recycle Content = Percentage of total sail weight attributed to recycled wood cellulose fiber
(Recycle %) - (Recycle %)min
Score = 10 ____________________________________
(Recycle %)max - (Recycle %)min
Professional USHGA Instructor-Pilot Evaluation:
Sail aesthetics, novelty of design, incorporation of novel coatings and polymers, materials engineering and construction fabrication considerations.
Gliding Competition:
The gliding competition will be a straight-line glide from a Kitty Hawk, NC sand dune of approximately 80 feet in height. The flights will be conducted in a rotational order such that each team will make one flight before the next round will begin. Only one glider will be in the air at any time. All pilots will be USHGA certified and supervised by the instructor-pilots of Kitty Hawk Kites, Incorporated.
Pareto each team; longest summative distance for the three flights = first place
Shortest summative distance for the three flights = last place
Comments:
- The race will be conducted on the appointed day, rain or shine. In the event that the wind is too strong (>15 to 20) we may conduct the flights using the Kitty Hawk Kites USHGA certified pilot-instructors as pilots. All student pilots will be USHGA Hang One certified pilots. Helmets and complete harness assemblies are required on all flights. All gliders will receive a complete pre-flight inspection before and after each flight by the professional staff of Kitty Hawk Kites.
- The DOE Energy Challenge 2003 staff will supply all of the hang glider framing. The parts list and construction diagrams will be provided by Kitty Hawk Kites
- Faculty supervising the teams are strongly encouraged to incorporate the project into a design class or other special problems class where students will receive credit for the effort.
- Each team is encouraged to have an industrial mentor.
- Faculty advisors will verify team-derived metrics, e.g. sail weight , sail area and recycle content by signing off on the appropriate pages in the final report.
- The sail weight is the sum of the sail + battens + grommets.
- Synthetic fibers, functional polymers, adhesives, binders, coatings and other finishing materials may not exceed 20% of the sail gross weight. A minimum of 80% of the board weight must be of natural wood cellulose fiber. Natural wood cellulose is cellulose in fibrous form and has not been recast as a solution polymer as in rayon, acetate etc.
- The DOE Energy Challenge 2003 staff will provide each team with the glider framing and construction diagrams in addition to a template for the sail.
- The Review Committee reserves the right to conduct destructive testing of the sail at the end of the competition to verify any disputed results.
- All sails must conform to the template sail area of 191 square feet
- Sample submissions for destructive testing will be four 12" X 12" samples of material identical to the actual sail construction material.
- The use of scrim material is not allowed.
[The DOE Review Committee reserves the right to continuously update the scoring protocol.]