CrazyEngineers Forum - Mechanical & Civil Engineering |
- Does Remote Controlled cars have differential mechanism?
- What is the maximum speed of a car per hp ?
- Use of ammonia cycle in steam power plants
| Does Remote Controlled cars have differential mechanism? Posted: 15 Dec 2010 06:49 PM PST Hi am an ECE final year student and i am doing a project on Autonomous Parallel Car Parking and am using an RC car for this purpose. I wanted the project to be more applicable to real time systems so the RC car needs to be more like a real time car. What i want to know is whether RC cars makes use of a differential. By differential i mean the mechanism to drive a pair of wheels with equal torque while allowing them to rotate at different speeds. Thanks for any replies.. :) |
| What is the maximum speed of a car per hp ? Posted: 15 Dec 2010 01:18 PM PST I am trying to make electric battery powered car. I must know what should be the max. speed it can attend for designing required gears and other parts. I know speed depends upon machine rpm and diameter of tyre and gears. Machine RPM and diameter of tyre are fixed. So only design depends upon gears ? When I strudied Eicher truck manual with 16 ton total wt. and 147 hp it can get 84 kmph max. speed from there literature. I do not know wether this speed is with full load. ( 10.3 ton payload) It comes to just 0.91875 hp per 100 kg gross wt. Take Maruti 800 which claims to have ma. speed of 125 kmph with 1000 kg laden wt and 37 hp engines. My car will have total gross wt 500 kg with 9 hp motor can it travel with max. speed of 90 kmph ? When speed is halfed power required is just 1/4. On Maruti data for 500 kg 18.5 hp for 125 kmph, If power is half 62.5 x 1.44 = 90 kmph Is my math correct ? Or is there any formula in Automobile eng. for max./ speed calculation for any given hp+ gross weight ? |
| Use of ammonia cycle in steam power plants Posted: 15 Dec 2010 03:35 AM PST Steam Power Cycle is used generally in Thermal Power plants. Suppose we replace water with Ammonia . I think it has the property of evaporating quickly when the temperature is slightly increased. I mean it evaporates at a pretty low temp itself. So, can ammonia be used to drive the turbines. It can also be recovered as in the Vapour absorption Cycle used in Refrigerators. Give some suggestions if anything could be done!! |
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