P13032 Adjustable Sailing Seat Timothy Slattery - ME Andrey Sulik - ME Derek Topper - ME Marion Paredes Pages ISE May 10, 2013 Project Overview Objective: o Redesign team P12031's Motion Assistive Seating Device for Sailing (Keith Burhans) Gold Medal Sailing Seat Motion Assistive Seating Device Specifications Primary customer needs: o Provide adjustability for multiple users o Provide adjustability for other Sonar boats o Increase safety o Increase mechanical advantage o Provide enough space for Jib Transfer Bench (P13031) Translated into engineering specifications
Engineering Specifications Engineering Specification # Importance*1 ES1 1 Source Specification CN1, CN11 Secure to Sonar with non-permanent attachments Unit of Measure Marginal Value Binary Ideal Value Yes ES2 ES3 1 1 CN2 CN3 Adjustable Foot Rests Seat Adjustment (up/down) in in 4< 1< ES4 1 CN4 Hand Crank Adjustment
in 4< ES5 ES6 1 1 CN5 CN6 Percentage Amplification of User Force Input Corrosion resistance % Binary ES7 ES8 1 1 CN7 CN8 Seat locks into position anywhere in travel Cost of components manufactured for MSD Binary $ ES9 ES10 1 1 CN9
CN10 Entire seating system is moved aft from previous iteration Minimum FOS of critical elements found via analysis ES11 ES12 1 1 CN13 CN14 ES13 ES14 1 2 ES15 ES16 3rev/ 90 Tiller 4rev/ 90 Tiller Yes Yes 3000> in # 0< 2 3< 3< Steps required to release rudder in emergency Degree of movement of rudder from centerline of boat
# degrees 3> 40< 1 90< CN14 CN22 Backlash in lines controlling rudder Grab handle(s) to assist seat movement in Binary 1> 0.5> Yes 2 2 CN17 CN18 Time required to attach or detach hands System has limited number of sharp corners or edges s # 30< 10> 15< 0 ES17
ES18 2 2 CN19 CN20 Pinch points created by track platform Steps required to release from harness # # 2> 3> 0 1 ES19 ES20 3 2 CN21 System fits multiple seats CN11, CN21 Time to fit system in SONAR sailboat # minutes 60> 2 30> ES21 ES22 2
2 CN11, CN21 Time to adjust system for new user CN24 Time to assemble system minutes minutes 60> 60> 30> 30> ES23 1 1 = most important CN3 Seat Adjusetment (fore/aft) in 3< Design: First Steps Functional decomposition Design: Concept Concept development iterations Two design proposals o Redesigned trackless system o Modified track system design (system constraints +
customer preference) Primary improvement goals: o Hand crank, seat position, and foot rest adjustability o Reduced impact on body when swinging from side to side o Mounting plate that can secure different seat shells o Adjustable platform handle locks to lock in place in different Sonar boats o Emergency quick-release system Final System Design: Adjustability Anthropometric analysis to determine amount of adjustability o Accommodate about 90% of the population Adjustability: Design Components Hand Crank Design Components Pedestal Base Design Components Track Platform Test Results Engineering
Specification Importance # *1 Specification ES1 1 Secure to Sonar with non-permanent attachments ES2 1 ES3 ES4 Unit of Measure Marginal Value Ideal Value Test Results Binary Yes Yes Adjustable Foot Rests in 4< 4" 1
Seat Adjustment (up/down) in 1< ~2.25" 1 Hand Crank Adjustment in 4< 4rev/ 90 Tiller 4" 4rev/ 90 Tiller ES5 1 Percentage Amplification of User Force Input ES6 1 Corrosion resistance Binary Yes Yes ES7
1 Seat locks into position anywhere in travel Binary Yes Yes ES8 1 $ 3000> ~3500 ES9 1 ES10 1 Cost of components manufactured for MSD Entire seating system is moved aft from previous iteration Minimum FOS of critical elements found via analysis ES11 1 ES12 1
Steps required to release rudder in emergency Degree of movement of rudder from centerline of boat Specification Achieved Specification Not Yet Verified % 3rev/ 90 Tiller in 0< 3< 3" # 2 3< 3 # 3> 1 1 degrees 40< 90<
Test Results Engineering Specification Importance # *1 Specification Unit of Measure Marginal Value in 1> ES13 1 Backlash in lines controlling rudder ES14 2 Grab handle(s) to assist seat movement ES15 2 s ES16 2 Time required to attach or detach hands System has limited number of sharp corners or
edges ES17 2 ES18 0.5> Yes Yes 30< 15< 0 sec. # 10> 0 Pinch points created by track platform # 2> 0 0 2 Steps required to release from harness # 3>
1 1 ES19 3 System fits multiple seats # ES20 2 Time to fit system in SONAR sailboat minutes 60> 30> 15 min. ES21 2 Time to adjust system for new user minutes 60> 30> 30 min. ES22
2 Time to assemble system minutes 60> 30> 30 min. ES23 1 Seat Adjusetment (fore/aft) 3< 2" Specification Achieved Specification Not Yet Verified Binary Ideal Value Test Results in 2 Success and Failure
System provides full range of adjustability o Foot rest angle (bonus!) System provides greater comfort to user o Corbeau seat o 5 point harness Quick release tiller System is expensive System should be made more robust o Removal of wooden components o Foot rests Many parts to manufacture Final System Future Work Provide adjustability for other popular sailing boats o Ideal 18 o Freedom 20 Increase system portability Provide ergonomic handcycling grips (30 tilt) Decrease total installation time Questions?
Complex Sentences The Brenham Writing Room Created by D. Herring What is a Complex Sentence? A complex sentence contains both an independent and a dependent clause. A complex sentence may contain more than just two clauses. A complex sentence may...
references. Assure that scientific studies utilized or referenced in your presentation are from sources acceptable to the scientific and medical community. PubMed citations in the Summary (text) display are useful for a list of references or a bibliography. Here is...
Supernova Panel Discussion Bethe Symposium June 2, 2006 J. Craig Wheeler Department of Astronomy University of Texas at Austin Type Ia Progenitor evolution: proof of binary, single versus double degenerate, other?
The First Primate. The first primate-like mammal evolved around 55 million to 60 million years ago (after the extinction of the dinosaurs). It was small (about the size of a squirrel), arboreal (lived in trees), had hands and feet adapted...
If You Love For Beauty (40) Berlioz Symphonie Fantastique (V) (46) Dream of a Witches' Sabbath Chopin Nocturne in E flat Major (41) Prelude No. 24 in d minor (42) Liszt Petrarch Sonnet 104 (43) Hensel The Roman Saltarello, Op....
Talking about daily specials is a part of suggestive selling. After guests place an order, let them know they've made a good decision by complimenting their choices. Servers can also recommend menu items that they personally like. Suggestive selling should...
Ready to download the document? Go ahead and hit continue!