Recent content by shott92

so basically I have been trying to add into a car and circuit simulation wind speed and direction, now I was thinking that cos degrees would work fine, so "wind direction - driving direction = affective direction." This works for head wind -1 and back wind 1 as well as side winds, 0 (no affect)...

Hi today I was watching a demonstration of using explosives in demolition and emergency rescue and they did one where they wrapped explosive cord around a steel I beam and cut it in half then said this was a shearing force which sounded right to me but then they took a concrete post similar...

i understand that it is a common assumption that CoP is considered to be the same height as the CoG and this is my struggle, i found your link rather good has almost everything i have done so far in one place, seems to make the same considerations as else where about the CoP i gather this is...

hi, it was the assumption that the weight transfer is what limits the braking to 1388N i am trying to get the most accurate results possible however there is not much i can find out there equation wise regarding this unfortunatly. i am happy for this to be moved i wasnt sure where to place this...

hi guys i know the title... (sigh not again) and this may be the case but i was hoping one you you clever guys on here could help me to the most apporpriate answer is not. thanks basically we know from skydiving and motorsports if the center of aerodynamic pressure is not equal to the center of...

i infact had not and only saw the later 3 posts, i do appologise, it actually became really obvious once i saw the principle i was trying to achive, I am really sorry i missed it and carried on with my question, i am please to say i am now having a good look into impluse, something i haven't...

bascially the whole point of my exersize it to creat a drive cycle that can be used and adapted for different condition, vehicle weights and powers, to find out the neccersary motor size then the battery size for the vehicle to be able to do the drive cycle around 18 times (its a 5 min drive...

sorry i did mean energy here :/ ah right 18.227 kilo joules * 3600 = 65797.2 kilo joules or 65.8 mega joules right ?? so is it 18kwh?? :/

awesome i think i understand now so the forces can't be added so there is no accumulative force (is there a derivative or something that is used instead?? because it seemed really logical to me that there be some form of total or average or some figure that should be here) the power can be added...

also if that's the case how do i work out kilowatt hours from there or can that be converted from joules? they are both units of energy right?

right i think i get you the total energies are for each incremental bit of the run, and as such the total energy would be 5411+16'369+27'736+39'187+2432= 91135 Newton*meters but the power would be an average so as such 91135/5 = 18227 joules per second (watts) and if anybody knows can someone...

ah right so what is the appropriate method to calcualte the total amount of joules and the total power requirede for whole run?? is my first method that the total amount of watts and joules both being the same correct? becuase this doesn't seem right

i mean adding the accumulated forces, I am attempting to create a drive cycle so i have to consider, not only the Mass*Acceleration but tractive force, rolling resistance, gradient, areodynamic forces and drivetrain losses etc. as well these forces i have added up taking essentially points every...

so basically i have calulated some forces in Newtons at one second intervals i have time - 1, 2, 3, 4, 5, ----- 5 seconds total distance - 3, 12, 27, 48, 72 ------ 162 meters total force = 1804, 1822, 1849, 1866, and 101 Newtons energy= 5411, 16'369, 27'736...

so is there an actual calculation that re-arranges this system to give a ratio or percentage or come correlation or is it only solvable with goal seek or trail and error ??