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https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1420304504959-NE9A1K69OTE1OBOND71P/95920016.jpg On The Tracks http://www.benjaminzelnick.com/contact daily 0.75 2016-11-29 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1349910921479-1OYMBXCYHRDC6EYSURX0/40750025.JPG Contact Image by Brendan Fay http://www.benjaminzelnick.com/ippnyc daily 0.75 2012-11-30 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1354312524422-94GH745UCFKVSZW60NB7/_DSC0865.JPG Immortal Planet Ben with his camera - Image by Tim Blasko http://www.benjaminzelnick.com/somerville daily 0.75 2013-10-30 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1366644032842-JTZ30UGA1TLG6BSJK0FF/Dan+C+Wine+and+Cheese+Cask.jpg Somerville Dan Comerford of The Wine and Cheese Cask https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1364476987446-AXXSD65ZI5QP21A8Z1P1/drunk.jpg Somerville http://www.benjaminzelnick.com/new-page-1 daily 0.75 2018-10-30 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479179409730-9WT11PXZMCEQ5EC0E00S/image-asset.jpeg CampStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479439321257-8F4CQV68AVMVV81RBHFN/image-asset.jpeg CampStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479179389264-K82JQWOM60HPAXFG0X7Q/CampStove2_2.jpg CampStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479174546024-MPZ2VN408G7TS6V4CG66/CampStove2_1.jpg CampStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480389665941-MXFYYF3CI9T5OZ0QWMLO/test+pp.jpg CampStove 2 - Thermo-electric Proof of Concept Model used for early phase power generation testing. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479438095397-WU3N8N6385PR9K85FD8C/IMG_20151014_140118.jpg CampStove 2 - CampStove 1 Baseline Testing https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479437559770-QSNIG8F43XD8VIIDUUTV/IMG_20151009_111257.jpg CampStove 2 - Preliminary Probe Testing Used CampStove 1 to evaluate potential new heat probe designs. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480388777796-4YQDBMDM6W3N8DGAAJEP/probes.jpg CampStove 2 - Probe Prototypes Six of over twenty probe concepts tested throughout the project. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479437488587-7NPCL53CF8RZEXJEAT1V/IMG_20151008_143903.jpg CampStove 2 - Heat Probe Concept https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479435799475-2QV45ZARJCEP7QOG3H2J/heater+tests.jpg CampStove 2 - Thermo-Electric Proof of Concept Rapid prototype power pack to evaluate heat probe and heat sink concepts. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479435830725-RQ9DK6ZBA4OZ0EKL77ET/early+front+iso.jpg CampStove 2 - Early Prototype One of the first prototypes to unite functional design and industrial design. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479437524676-6YBLWXYQJCNE37DDT7O1/IMG_20160216_120740.jpg CampStove 2 - Burn Testing Testing early prototype with grill. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479437700285-XRFX1K6VJVJSFCG8SG61/cs+2+cad+iso+transparent.JPG CampStove 2 - Complete Product CAD https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479435867770-UQO6G7AUB7TUO6PLPRVF/open+back.jpg CampStove 2 - Fit Testing Off-Tool Samples https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479437491463-NOI2NRCFAIHRRCFUZ04E/IMG_20160916_161509.jpg CampStove 2 - Burn Testing Off-Tool Samples https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480388780455-NK1ZG1LU5UA6XTTG8WAU/stove+bodies.jpg CampStove 2 - Stove Bodies and Pot Rests Heat shield and pot rest concepts. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480388787914-8P7T7B36FUN836E494LN/pp+evolution.jpg CampStove 2 - Power Pack Design Iteration Progression of power pack designs throughout the project. http://www.benjaminzelnick.com/gearbox daily 0.75 2018-10-30 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479789975036-OEV67NXXVXC5VNLGAFO6/image-asset.jpeg Gearbox https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480000480229-8Q07VC6MCNX8C35LWKVX/drivetrain+plane+side+view.jpg Gearbox - Drive System Scope CAD side view of Drive System located in vehicle. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479790707648-GJ5PK2VAJEHA9T46CTXB/fnr+sketch.jpg Gearbox - Early Sketches Notebook sketches and calculations for gearbox components. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1540900417614-TD8WGCDXQ4U3PG5RO8CX/prop_lock_graph.JPG Gearbox https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788056425-UHO9VPDJ2AO3R6EHNB58/fnr+thru+shaft.jpg Gearbox - CAD: Gearbox Side View Cross-section of gearbox shows slide spline U-Joint drive shaft interface on left and propeller mounting flange on right. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788055805-J1VX7ZUBMO3ARMBFWV83/fnr+box+top+x-section.jpg Gearbox - CAD: Gearbox Top View Cross-section shows gear arrangement for right-angle power take-off for drive system. Two crown gears provide forward or reverse power when one or the other is engaged. CVT primary pulley mounted directly to upward facing splined shaft. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788056856-G5H78KHLAXB7O68JDVK8/fnrbox+case+1.jpg Gearbox - FEA: Drive Load Optimization Stress analysis of "Wheel Slip at Gross Weight" load case to optimize case material removal. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480001262912-0FFEO1Y06QI66K8OUS0R/bearing+life.jpg Gearbox - Bearing Calculations Spreadsheet analysis of bearing lifetime based on expected spread of driving loads, vehicle lifetime and required bearing reliability. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788053851-ZDS84ZN89AX9O0NOEZYV/dog+fea+2.jpg Gearbox - FEA: Propeller Drive Ring Stress analysis of spline interface between propeller drive ring and main drive shaft for 100hp, max torque case. Max stress targeted for infinite fatigue life with a factor of safety of 1.5. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788058210-V2UFSFVF5M4I9RKSONWX/shaft+fea.jpg Gearbox - FEA: Pulley Shaft Stress analysis of pulley shaft being driven by CVT under max-torque wheel slip loading conditions. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480190408354-LGC3M13A21BRRT6F4AGZ/prop+flange+dwg.JPG Gearbox - Drawing: Prop Flange Production drawing for propeller flange component using GD&T. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480190694597-CPX75NTHMUR38A3VHCID/dog+dwg.jpg Gearbox - Drawing: Propeller Drive Coupling Production drawing for propeller drive coupling. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480190575111-B8NV8VJBMHUEQAYGQ6TS/shift+dog+dwg.JPG Gearbox - Drawing: Shift Dog Production drawing for shift dog ring component. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480190477401-PSRKXAFBIEKEB96O0A22/fnr+shaft+dwg.jpg Gearbox - Drawing: Main Shaft Production drawing for the main thru-shaft in the gearbox. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788056341-5FCRC1OJML9FMBEF3F1K/fnr+box+case+photo.JPG Gearbox - Gearbox PTO View of the CVT mounting shaft of the right-angle power take-off of the gearbox that sends power to the wheels. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788060619-L7K5370114S452O7XFNX/gearboxtop.JPG Gearbox - Gearbox Top View Top view of the gear layout and shift components of the gearbox. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788056664-UFM65K6B01NQOZ65FIBS/fnrbox+1.jpg Gearbox - Gearbox Prop End View of the end of the thru-shaft where it interfaces with the propeller flange, which is removed in this photo. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479788056851-7LT18VP7T7ASASZIUYAV/fnrbox+an+cvt.jpg Gearbox - Gearbox Installation Gearbox installed in the rear of the aircraft with propeller mounted. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480191007153-OFB8ZJROG7EEQ80YOJUO/fnrbox+test.jpg Gearbox - Gearbox Testing Testing the gearbox and propeller in the Terrafugia parking lot. http://www.benjaminzelnick.com/safety-cage daily 0.75 2016-11-27 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1479789975036-OEV67NXXVXC5VNLGAFO6/image-asset.jpeg Safety Cage https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480260470255-WZF0AT1YKWTWF65ACH0N/abeam.jpg Safety Cage - A-Pillar Draping Analysis Visualization of shear deformation of the carbon fiber strands in the uni-directional laminate on the A-Pillar. Used this analysis to help drive the geometry of the beams and outer mold line. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263408574-9C5DSTYY8Q5HQ32CMXYS/transition+oml.jpg Safety Cage - Outer Mold Line CAD OML CAD was iterated in conjunction with early structural analysis to accommodate changes based on the draping evaluation described in the previous image. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263496912-1VGRUNHLI9P7KMC1BIK2/cs+fea+11.jpg Safety Cage - FEA: Forward Beam The forward beam is the interface between the aluminum crush rails and the rest of the safety cage. In a crash, this beam is responsible for supporting the deceleration of the entire vehicle through the safety cage and guiding it into the crush rails. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263496968-N13GFAB1S77UTWTXOLT9/cs+fea+1.jpg Safety Cage - FEA: Forward Beam As the keystone of the crash safety structure, the forward beam was the first focus of the analysis. There are a number of evaluation methods used for composite analysis. The Tsai-Wu failure criteria was chosen as the primary, which returns a likelihood of laminate failure based on 8 specific failure modes of composite structures, including both fiber and matrix (epoxy) failures. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263497735-8KGMC59VLUORYYFSKJZS/cs+fea+2.jpg Safety Cage - FEA: Forward Beam The aluminum crush rail interface is represented by the dark blue rectangle in the middle of the beam. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480264682839-ROBRCELFAJ4XAZ0136QL/forward+beam+and+crush+rail.JPG Safety Cage - Forward Beam and Crush Rail View of the forward beam as installed in the vehicle. The aluminum crush rail can be seen in the left of the image and suspension components for the driver-side front wheel in the right of the image. Aluminum-to-carbon fiber bonding is used extensively throughout the vehicle. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263498239-3P5N169S06IMNQBLT0HK/cs+fea+5.jpg Safety Cage - Forward Beam Laminate Design The forward beam was optimized by iterating the detailed laminate makeup ply by ply. This image shows a visualization of a carbon fiber cloth patch being applied to the beam. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263498280-1238RHJL438U2E53OXXD/cs+fea+4.jpg Safety Cage - FEA: Forward Beam The analysis tools create detailed material properties for each element independently allowing for very detailed optimization of the laminate. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263497803-2TMNEIEUV9DOZY9EW40E/cs+fea+3.jpg Safety Cage - FEA: Center Console The deceleration of most of the vehicle's mass is transferred to the forward beam through the center console structure. The large swath of red around the kink in the center console illustrate areas where the model is predicting laminate failure. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263499171-AEQLH530BVCOKGCQ5VJU/cs+fea+8.jpg Safety Cage - FEA: Center Console A magnified view of strain helps identify the areas of the structure requiring reinforcement. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263499758-1Y7HH4PICYGU6J4QADJ1/cs+fea+9.jpg Safety Cage - FEA: Center Console Laminate iterations were done in small increments as any local change in stiffness can have dramatic effects down stream of the change. Moving slowly allows for better optimization in the end. This image shows an improvement in the stiffness of the kink in the center console. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263499677-QTWHHFKFYFNTRQLISV0N/cs+fea+10.jpg Safety Cage - FEA: A-Pillar, B-Pillar and Engine Beam All of the mass not decelerated through the center console is handled by the engine beam - spanning the width of the vehicle - and channeled through the A and B pillars to the forward beam. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480263498657-CEJC8A5N6OFHAZ0U3GJW/cs+fea+6.jpg Safety Cage - FEA: A-Pillar, B-Pillar and Engine Beam Being smaller in height than the center console and of a geometry largely dictated by the outer mold line, these beams required thicker laminates to accomplish their jobs. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480264671852-XNXSLCUNXECSRDC67H65/transition+testing.jpg Safety Cage - Transition Prototype On the tarmac in Plattsburgh, NY for flight testing of the fully assembled vehicle. http://www.benjaminzelnick.com/homestove-2 daily 0.75 2016-11-28 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297012318-A8GV9KECD39YINXC2CKX/hs2+pp.JPG HomeStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480296977203-7KA6N1IZ0MNDX5MHJ7VG/hs2+top.JPG HomeStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480296984927-2T53KVOLWIQKNKGL8OJ0/hs2+front.JPG HomeStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297031737-QSVZ9MLJI37T2MBGJ3SW/CampStove2_1.jpg HomeStove 2 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297098449-HSYKUA79Z2B0NFM6VMNY/DSCN3813.JPG HomeStove 2 - Early HS 2 Prototype Early cost-saving ideas included a metal power pack housing. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297099371-YSFV030RV2NNWTJWYA82/DSCN3842.JPG HomeStove 2 - Early HS 2 Prototype Painted to demonstrate final configuration options. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297096584-QGJ9MSAUHV5XUZR2VS3C/Assembly-1.JPG HomeStove 2 - Early HS 2 Prototype https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297106849-21EQL60C8II9HFSBN2T8/DSCN5343.JPG HomeStove 2 - Second Generation HS 2 Prototype Receiving prototype parts for second generation prototypes. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297104795-P1DTNC07X491MH7UKV8Y/DSCN4487.JPG HomeStove 2 - Second Generation HS 2 Prototype Sub-assembly of primary (bottom) and secondary (top) combustion chambers. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297105407-OI03YQDP8K82Z7NQOP1E/DSCN4497.JPG HomeStove 2 - Second Generation HS 2 Prototype Assembled second generation prototype, now with plastic power pack housing. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297110318-J6XU350CGDXT0TP27MX6/DSCN4498.JPG HomeStove 2 - Second Generation HS 2 Prototype View of power pack, with heat sink visible through the opening in the front face. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297095662-A4KWRT0DI41W7P2KVL89/assembly+detail.JPG HomeStove 2 - Production Documentation Stove body assembly detail. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297095916-RRXC2NOF63WY1UBHC5U8/assembly+detail2.JPG HomeStove 2 - Production Documentation Power pack assembly detail. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297109797-QAB04W7OPWI0FGHOPX7I/IMG_20160622_121605075.jpg HomeStove 2 - Power Pack Power pack with cover removed. Blower assembly visible on right attached to heat sink, https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297113417-U6JNL3CLSWNPQ0LEWBUE/IMG_20160622_121618535.jpg HomeStove 2 - Power Pack The generator and heat probe can be seen closest to the stove body. The probe itself is used to mount the power pack to the stove allowing for easy servicing and removal. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297115399-ZMPP4OSB0GI8QB97W0EZ/IMG_20160622_121628454.jpg HomeStove 2 - Power Pack PCB mount attached to heat sink opposite of the blower housing. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297120038-XQRHK4QNAMFUU64OMH0N/IMG_20160622_121909533.jpg HomeStove 2 - Power Pack Cover reattached to power pack. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297126436-N7A6XP3V2WBE0041F6QE/T1-A_20160710_125725.jpg HomeStove 2 - Field Testing Testing the HomeStove 2 first off-tool samples with HomeStove 1 users in Uganda. Basic temperature data collected to help guide design refinement. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297127248-PDCTUX3CPPCWG34F538O/T1-A_20160712_142800.jpg HomeStove 2 - Field Testing Typical fuel load in mouth of stove. Insights like this from the field are invaluable in developing products for emerging markets. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297131564-W31CXD9JWFVO8PAEWYCC/T2-05_20160710_115721.jpg HomeStove 2 - Field Testing A user cooks beans on a HomeStove 2. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297131596-FJJHOU1HG9YCVSPIH3G3/T2-07_20160710_111610.jpg HomeStove 2 - Field Testing Example of common "fill and walk away" behavior. The HomeStove 2's mouth and primary chamber capacity were greatly increased over HomeStove 1 to accommodate this exact use case. With more fuel, cooks can ad more fuel and keep their food cooking for longer without stopping to refuel. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297137886-LC2ZFP0HZ1KZZTTN5ZA6/T2-07_20160712_105805.jpg HomeStove 2 - Field Testing Beans at a rolling boil. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480297100447-UXZOO6H9G0IKK7YEX4KW/T2-08_20160711_114426.jpg HomeStove 2 - Field Testing A typical home cooking area. HomeStove 1 on far left and HomeStove 2 in the center. http://www.benjaminzelnick.com/otherproducts daily 0.75 2016-11-29 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480305658562-KAZUIZWOYIZJ22CIOBGC/CoffeePress_1.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390174957-4S4LO1I3JXBUB301NA2O/poc.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390179215-U0SNPXXO1PIWIXOD4OW2/evolution.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480305658620-NHXZRZH5NVKZPL6PEKLH/CoffeePress-3.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480305659181-19GJ6H7JLS7P594TBMPV/CoffeePress-4.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480305658977-MTE0VBNFGZ3SZI66YYDU/CoffeePress-5.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480305658190-H4CXSUE2EZY9VUIBR5GP/CoffeePress-2.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390244530-RR4Q07QD9D2BUK8BAVWN/StickSnapper_product.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390269081-8OC4HW57Z5WGYTJHP0V1/evolution.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390244660-AL2A19K6XI23GVU2FX7Z/StickSnapper_breaking_1.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480390266158-4ZL9OTGM8LWUQMZW04T6/IMG_20150713_174243.jpg Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391591720-FG9V0P7JOFAFXZNWBHFF/aileron+2.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391126896-L79J7VBYWZQEZ0C31Y9L/stabilator.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391591853-XE1BO9MD8IHYR6KY8ITL/aileron.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391591904-EFKV8YIVF2I4D8YG6RE0/controls+system.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391591962-F1SR1A5KY3RFK2KZV8TN/stick+1.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391592024-T0GR3KBH1GX3YRH4UWTL/stick+2.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391592100-NQPFQB84GY4JALJENKZZ/stick+3.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391592166-RP4PH4YI3A1JU3ESTDOC/stick+4.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391592219-54DJXEFEY65DZPQHYAN4/stick+5.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391592276-HLS61O0V37GIHQXOXS96/stick+6.JPG Other Products and Projects https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391006727-11Q7K4SD2GMJZ3DIJXDZ/09-Lerner+Assembly_1.JPG Other Products and Projects - High-Performance Elliptical Machine https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391007880-RZUHDTW9FF8YMCZPZ1TY/09-Lerner+Assembly_2.JPG Other Products and Projects - High-Performance Elliptical Machine https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008093-UWAUZINO3R2HYJKV785A/09-Lerner+Assembly_3.JPG Other Products and Projects - High-Performance Elliptical Machine https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008200-LMMNZRNFIY3VXVZ1V60E/09-Lerner+Assembly_4.JPG Other Products and Projects - High-Performance Elliptical Machine https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008347-505CVA8AV5E0TWY3GB03/09-Lerner+Assembly_5.JPG Other Products and Projects - High-Performance Elliptical Machine https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008625-Y3EYS1Q7OBT50BMHXUDK/Clamping+Handle+v12_2.JPG Other Products and Projects - Quick Release Grip for Bare Handle Cookware Inch, Inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008709-3HI44QU2GVM6NT83QD2Y/Clamping+Handle+v12_5.JPG Other Products and Projects - Quick Release Grip for Bare Handle Cookware Inch, Inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391008951-4M40ERXQCGJ5LCR1BVDI/Clamping+Handle+v12_6.JPG Other Products and Projects - Quick Release Grip for Bare Handle Cookware Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391006780-G9FSURHQFQS49SAQLRHG/Syringe+Assembly_2.JPG Other Products and Projects - Painless Oral Syringe System Inch, Inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009740-VSCZG0LP3CSO7790B314/Syringe+Assembly_1.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009017-KGY1UPCXNR3VDF8RBQ4R/Spring+Loaded+Needle+Sleeve+Assembly_1.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009183-P6TYEIOK0ZZD4124FUJF/Spring+Loaded+Needle+Sleeve+Assembly_2.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009276-A2UPSVGBKMHHX30JO9OD/Spring+Loaded+Needle+Sleeve+Assembly_3.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009466-W61PS9MSGA3DUYWNRNRX/Spring+Loaded+Needle+Sleeve+Assembly_4.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009499-X6RZI34RNBWRXT9O98M4/Spring+Loaded+Needle+Sleeve+Assembly_5.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391009708-2YZ9S6AGRLECC48VT596/Spring+Loaded+Needle+Sleeve+Assembly_6.JPG Other Products and Projects - Painless Oral Syringe System Inch, inc. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480391115946-XR9R1QK51DRC8FAK8P12/wort+tub.JPG Other Products and Projects - Automated Brewing System Brewery Innovations, LLC http://www.benjaminzelnick.com/cookstove-1 daily 0.75 2016-11-28 https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480306355349-RP0R3BQBYOEW4AJJ5TCB/image-asset.jpeg CookStove https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480306452239-PW8JDCCOBAYNM6R8NJM5/CookStove_Angle.jpg CookStove https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480306425544-TDN9NO4FBKTIN9P7X66D/CampStove2_2.jpg CookStove https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480306629049-8JQ6E6XSFLPOM7AGP8V9/CookStove_burning.jpg CookStove https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340633047-W1KGRPNWS0UC41T30G3Z/IMG_20141002_161902.jpg CookStove - Proof of Concept Fans Quick-and-dirty fan proof of concept being tested on a CampStove 1 stove body. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340633647-VAD7AMBW46DFZB8FWUXP/IMG_20141006_163131.jpg CookStove - Proof of Concept Fans Alternate fan arrangement. Fan designs strove to reduce radiation and convection heat transfer from the hot stove body while minimizing aerodynamic losses from fan to fire in order to make the on-board battery last as long as possible. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340633748-N9M5D4VY757I9W0IAWCT/IMG_20141009_112457.jpg CookStove - Proof of Concept Fans Alternate fan arrangement. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340633609-4Q0LYYSUNXSN6CA6F6K2/IMG_20141006_113820.jpg CookStove - Proof of Concept Fans Burn testing fan arrangement. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634044-83LXB5L7P1O7WQFULNRY/IMG_20141010_104139.jpg CookStove https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634146-0WQAGQ6IR6T7S4F09F34/IMG_20141014_174921.jpg CookStove - Proof of Concept Fans Alternate fan design. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634304-A0GGAIMYVIRW1805CFFQ/IMG_20141015_122158.jpg CookStove - Proof of Concept Fans Testing a centrifugal blower style fan. This style has many benefits including reduced view angle to radiation for sensitive components and significant cost saving potential as it lends itself to in-house design and fabrication instead of purchasing a COTS component. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634535-YZW8Z32NWDQ41EUHYAM7/IMG_20141111_144633.jpg CookStove - Proof of Concept Fans Flat arrangement of centrifugal blower to save space in power pack. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634624-KC4LY2KEBO4Y0M5NJPOM/IMG_20141113_181521.jpg CookStove - Proof of Concept Fans Another flat blower design. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634937-R0ZM5ROGPW3UQ1DUZZX2/IMG_20141204_112345.jpg CookStove - Complete Prototype Testing All fan learnings incorporated into a complete prototype with a custom designed centrifugal blower and integral battery. Parts are sintered from Nylon, which offers relatively high temperature performance for a rapid prototype material. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340634981-HP50GW0N5AON0M789NU2/IMG_20141222_161815.jpg CookStove - Complete Prototype Testing Burn testing of complete prototype with remote control box. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340635182-3SDPBEKX7XAW4H4ITRZT/IMG_20150107_115328.jpg CookStove - Complete Prototype Testing Burn testing prototpye. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340635737-SWCXEADDORWHCE0DWA5T/IMG_20150416_163359.jpg CookStove - Secind Generation Prototype Testing Revision of power pack housing design. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340635247-YN69O0DC6TJAMBW336O9/IMG_20150310_060607.jpg CookStove - Secind Generation Prototype Testing New power pack design with double 18650 battery pack. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480306792538-ONBNBPHKBLNYJQZQXUOJ/image4.JPG CookStove - Secind Generation Prototype Testing Field testing prototype on backpacking trip in the Smokies. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340636497-LL4FXZR05E4XHP6R6XNL/IMG_20150617_104619.jpg CookStove - Off-Tool Part Inspection Inspecting first off-tool samples. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340636518-LTPMUFCX8THABPN6QXBT/IMG_20150618_125143.jpg CookStove - Off-Tool Part Inspection https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340635854-TOMZU6J5URMXC1NSJ459/IMG_20150617_104535.jpg CookStove - Off-Tool Part Inspection https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340200285-W5KNHKJH1X6INC0CB0QE/IMG_9511.jpg CookStove - Design Iteration Early power pack foams. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340618830-OLONWJG5O6FMA5ZFNNED/IMG_9506.jpg CookStove - Design Iteration The progression of the power pack design throughout the project. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340632933-TPVDWVN99B7XMKDOMYS1/IMG_20150717_104724.jpg CookStove - Production Sample Burn testing final production samples prior to start of mass production. https://images.squarespace-cdn.com/content/v1/5075f0bde4b0a53efa781036/1480340636970-R6X3OMIMKIZ35L9PCAN3/ookstove+iso+front.JPG CookStove - Finished CookStove