Is the steer angle you are refering is it the ackerman angle or the different angle of the inner and outer wheel takes to turn a radius without slipping. if its diffrent angle then the steer angle for alpha 1 and 2 different?
what about anti-ackerman if you have the reverse case. The big debate I have read about is between the impacts of peak force for the pair of tire versus quicker yaw rate. Thoughts?
This is an excellent question! To maximise the forces anti ackerman is called for. However let me answer a question with another one. Take a given tyre load say 5000 N outside and 1000 N inside, calculate the basic slip angle on the bicycle assumption. Then put in full slip angles and start at a slip angle of 4 deg. Use a linear slope and a pacejka curve with a peak slip angle of 6 deg and see what the numbers say. Good luck!
I don't mean this as anything other than constructive, but you really could improve the quality of your videos by perhaps following a script to avoid the repitition and contradiction that keeps happening, it's quite hard to follow. But the "hit me between the nose" was a corker!
Seriously dude. The slug is a unit of mass. What is the kilogram? Depends on who's talking. The metric system got well out of hand before it got standardized.
Strictly speaking you are correct the slug is a unit of mass. However in aerospace it is often referred to as a unit of density as well (they just leave the cubic feet off). I was first introduced to it by a aero structures engineer who has forgotten more maths that I know. But if you look at the slug it's a pretty esoteric definition of mass. The power of the Metric system in it's current form is there is one definition of the kilogram, and one definition of the m. It's well defined and everything is divisible by 10. Here's a case in point do Aero hand calcs in metric. Then do the same thing in imperial. It's a night and day difference.
Maaaate, cracking video. Thank you - you’re right about actual steer v neutral steer comparison. Top man Dan!
Great video sir. Thankyou.
Is the steer angle you are refering is it the ackerman angle or the different angle of the inner and outer wheel takes to turn a radius without slipping. if its diffrent angle then the steer angle for alpha 1 and 2 different?
Hey mate the input is the steer angle at the wheel and the output is the differential tyre angle
what about anti-ackerman if you have the reverse case. The big debate I have read about is between the impacts of peak force for the pair of tire versus quicker yaw rate. Thoughts?
This is an excellent question! To maximise the forces anti ackerman is called for. However let me answer a question with another one. Take a given tyre load say 5000 N outside and 1000 N inside, calculate the basic slip angle on the bicycle assumption. Then put in full slip angles and start at a slip angle of 4 deg. Use a linear slope and a pacejka curve with a peak slip angle of 6 deg and see what the numbers say. Good luck!
you forgot the arctan??
Yeah! SI Units Baby!
Small angle assumptions my friend.
I don't mean this as anything other than constructive, but you really could improve the quality of your videos by perhaps following a script to avoid the repitition and contradiction that keeps happening, it's quite hard to follow.
But the "hit me between the nose" was a corker!
Seriously dude. The slug is a unit of mass. What is the kilogram? Depends on who's talking. The metric system got well out of hand before it got standardized.
Strictly speaking you are correct the slug is a unit of mass. However in aerospace it is often referred to as a unit of density as well (they just leave the cubic feet off). I was first introduced to it by a aero structures engineer who has forgotten more maths that I know. But if you look at the slug it's a pretty esoteric definition of mass. The power of the Metric system in it's current form is there is one definition of the kilogram, and one definition of the m. It's well defined and everything is divisible by 10. Here's a case in point do Aero hand calcs in metric. Then do the same thing in imperial. It's a night and day difference.