Crossbow
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Revision as of 15:46, 1 February 2014
DFE Analysis
| DFE Guideline | Good Aspects of Competitor Product and Ideas for Improvement |
|---|---|
| 0. New Concept Development | Remove fasteners to allow a snap-fit design.
Integrate a quiver into the crossbow itself, instead of having it as a separate part. Add a loading mechanism that does not require a very significant force input from the user. |
| 1. Select Low Impact Materials | Crossbow:
Aluminum, Fiberglass, Steel Bolt: Aluminum, Carbon Fiber Sling: Nylon, Foam
|
| 2. Reduce Material Amount | Slots in the crossbow body reduce mass
Limb is removable to reduce transport volume The "snap-fit" design would reduce material amount by removing the need for fasteners |
| 3. Eco-Manufacturing |
Camouflage coating requires an adhesive |
| 4. Optimize Distribution | Fill this with info
Fill this with info Fill this with info |
| 5. Reduce Use-Phase Impact | Fill this with info |
| 6. Maximize The First Life | Fill this with info
Fill this with info Fill this with info Fill this with info |
| 7. End of Life |
Product Life Cycle Analysis
| Life Cycle Stage | Description | Inputs | Outputs |
|---|---|---|---|
| Material Extraction | Steel from Iron Ore
Plastic from Petroleum Fiberglass Raw materials must be processed. | Iron Ore
Aluminum Ore Petroleum Silica sand Limestone Polyacrylonitrile (synthetic) | Steel
Aluminum Fiberglass Plastic Carbon Fiber |
| Production | Components | ||
| Use | Crossbow, Bolts | Shooting Crossbow | |
| End of Life | Retiring/Disposal | Crossbow, Bolts | Landfill |
| Transportation | Airplane, Boat, Truck | Fuel, Crossbow, Bolts | Crossbow, Bolts |
EIOCLA
| Item | Crossbow | Bolts | Strap | ||||
|---|---|---|---|---|---|---|---|
| Sector # and Name | Reference Unit | ||||||
| Units consumed per product life | Crossbow, Bolts | Shooting Crossbow | |||||
| Retail cost per unit (2002) | Retiring/Disposal | Crossbow, Bolts | Landfill | ||||
| Lifetime cost | Airplane, Boat, Truck | Fuel, Crossbow, Bolts | Crossbow, Bolts | ||||
| Sector mtCO2e Per $1M | Airplane, Boat, Truck | Fuel, Crossbow, Bolts | Crossbow, Bolts | ||||
| Implied mtCO2e per Product Life | Airplane, Boat, Truck | Fuel, Crossbow, Bolts | Crossbow, Bolts | ||||
| CO2 Tax @ $30/mtCO2e | Airplane, Boat, Truck | Fuel, Crossbow, Bolts | Crossbow, Bolts |
