
07-01-2017, 20:35
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Alumni turned Mentor
AKA: Branden Gunn
 FRC #4761
Team Role: Mentor
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Join Date: Jan 2007
Rookie Year: 1996
Location: Reading, MA
Posts: 893
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Re: Fuel Seems Undercosted
Quote:
Originally Posted by faraz5557
I'm going to dispute your 3.41 cubic feet figure (I'm getting like 4 cubic feet, 26 in tall cylinder with an approximately 9.1875 in radius which is less than the given number of 10.5 in bc the tube is lower radius than the frustrum), but more importantly how did you get 40? 3.41 cft is 5892 cubic inches, each ball is 65.5 cubic inches for 90 balls, but since sphere packing is only about 74% efficient this is 66 balls in only the cylindrical and frustrum part of the boiler room. How did you only get 40 balls?
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packing is 74% best case. see wikipedia. I'd estimate we get loose or poured for most cases in this game, so 60% packing seems reasonable.
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Student FRC23 (1996-1999), Mentor FRC246 (2000), Mentor FRC1318 (2007-2009), Mentor FRC93 (2011), Mentor FRC2151 (2012), Mentor FRC23 (2013), Mentor FRC4761 (2014-2017)
1998 - National Chairman's Award and Woodie Flowers Award (FRC23, Mike Bastoni ) | 2007 - PNW SF (488, 1595) | 2008 - Oregon RCA - Seattle #2 Seed, SF (488, 1696) | 2009 - Oregon #1 Seed, Winners (1983, 2635) - Seattle SF (945, 2865) - Galileo #2 Seed, SF (973, 25) | 2012 Midwest F (111, 71) | 2014 RIDE Winners (78, 125), Inspector - NEU #24, QF (3479, 3958) - NECMP #35 | 2015 Reading #11, SF (1058, 190), Inspector - RIDE #17, QF(4055, 5494), Inspector - NECMP #57 | 2016 Reading #4, SF (133, 4474), DCA, Inspector - Ride #22, SF (1735, 2067), Creativity, Inspector - NECMP #48, RCA - Archimedes
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