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Homework Statement I need to calculate the tangential and radial force acting on a shaft so i can specify the correct bearings to use, however i dont know of any relevant formulae to calculate these, can anyone help? Power through the shaft is 1000w RPM is 130 Force acting vertically on...
2. Axial Piston Pumps Equation Help

Right, im in the process of designing an axial piston pump. I have obtained the following formula from a text book for power output. unfortunately i dont know what units the formula requires, is anyone able to confirm what they are? Also, if anyone knows of a good resource for pump design...
3. Solidworks Mating Arrangements

I have now sorted it out - it didnt like the sub assemblys being imported into the main assembly, and as such wouldnt mate as i required. I have also since discovered that for some reason i needed to arrange the mates in a very precise order - there all mated in now and looking tidy - only...
4. Solidworks Mating Arrangements

Ok, ive sorted the initial problem, however no it wont let me adjust the angle of the swashplate. Anyone have any ideas? Cheers Ed
5. Solidworks Mating Arrangements

Hi, Im designing an axial piston pump in solidworks, prior to analysis. Basically im having difficulty in getting the slipper pads from the top of the pistons to mate to the swashplate, so that when rotated the pump produces a pumping action. I have the slipper pads connected to the...
6. O ring Groove Dimensions

That is bloody marvellous! Its about 100 time better than i need, and i never would have found it by myself! Thank you very much! Ed
7. O ring Groove Dimensions

Hi, I need to find the dimensions for O ring grooves for different size o rings, for static, dynamic and face sealing. Does anyone have a web link for these for BS and/or ISO metric dimensions. All the ones i can find are subscription ones. Many thanks Ed
8. Maximum Stress on a wheel in motion

Homework Statement I have a vehicle travelling at 180 ms^-1, weighing 2000kg. I need to calculate the maximum stress that the wheel is likely to sustain if it hits a solid, immovable object at the above speed, so that i can successfully design a wheel which wont go beyond its yield strength...
9. Change of temperature in disc brakes

Homework Statement Basically ive got a brake system which i have designed, and i need to calculate if the brake fluid will overheat if the vehicle brakes from its top speed to a halt, and if so at what speed (or how long after braking commences) they will overheat Brake force = 13000N...
10. Simulink Help (i would imagine its a pretty simple solution)

as it turn out, it was! i used the embedded matlab function to write a simple if statement... so simple whaen you know how..
11. Simulink Help (i would imagine its a pretty simple solution)

I have a system, setup to simulate the braking of a vehicle. the vehicle decelerates from 400 mph to zero using a parachute, and conventional brakes the parachute deploys at 400mph to prevent the brakes from overheating they need to be used at a lower velocity at present i have a...
12. [Solved] A little matlab help needed

Ok, please ignore this - i figured out how to do it...
13. Car Crash Safety Experiment

no worries - you might also want to know that in an old episode of fifth gear (a uk tv program on channel five) they were looking at car safety and crashed a smart car into a wall at 50mph... might be worth having a trawl for.. hth ed
14. [Solved] A little matlab help needed

Homework Statement right, im modelling the deceleration of a vehicle in simulink the vehicle uses wheel brakes, and a parachute to decellerate from Vmax to zero I have constructed a model which models the constant force of the brakes to decelerate the vehicle to stop I need to amend...
15. Formula for deceleration, using a parachute and wheel brakes

Hi All, Thanks for all your help so far, the following is where i have got to working with it - would someone be able to check my derivation of this please - my maths skills are somewhat rusty, so i may well have made a mistake somewhere. Cheers Ed
16. Cooling of Brake Discs

I already have the brake force (or at least a spreadsheet where i will have the accurate brake force once all values are inputted) and the heat generated by the brakes (again the same as the brake force) per second, and in total over the run. It is simply the amount of heat that the airflow...
17. Car Crash Safety Experiment

well, the smart car has an internal safety cage, which would be my main point of focus, as the crumple zones in this car are negligible calculate the bending stress in the safety cage, and from that you can model how much the cage will deform under impact, and therefore how much of an...
18. Cooling of Brake Discs

There is approximately 6500m of possible braking distance.
19. Cooling of Brake Discs

i only have very rough figures at the moment, as they are dependant on other parameters of the car, which others are designing, and there not finalised yet, but in simple terms it will be one hell of alot - its for something weighing ~2000kg from ~400mph (well a parachute brake from 400-200...
20. Cooling of Brake Discs

Homework Statement Ok, im designing a brake system for a uni project, as part of this i need to specify the size of the disc's, to prevent the brake fluid from boiling during braking. Does anyone know of an arbitary formula which will help me calculate the rate of heat loss from the...
21. Formula for deceleration, using a parachute and wheel brakes

your correct with the drag force - typo on my part - i accidentally did the power formula... edited now anyway.. The formulae ive been using for stopping distances and time for the wheel brakes alone is as follows X=(V^2M)/(2Fw) t=VM/Fw The newton equations do work for constant brake...
22. Formula for deceleration, using a parachute and wheel brakes

Homework Statement Basically i need to find the braking distance and time for the deceleration of a vehicle for the following conditions, using a parachute using a parachute, and wheel brakes does anyone know of a suitable formula to calculate this? Homework Equations...