 #1
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 8
Hello all
Please note: This is not a homework question. I work in Engineering.
Firstly Thank you for reading my post.
I am trying to learn a technique called Hallade which is used on the Railway to design curves.
I have some notes (attached).
The bit I fail to understand is on page 8.
Three equations are presented:
1) Sin (Alpha) = 4V/C
2) Sin (Beta) = Sin(2Alpha)
3) Sin (Beta) = 8V/C
I understand how equation 1 was derived but I do not understand how equation 2 & 3 was derived???
I was wondering if anyone could help shed some light into how equation 2 & 3 was derived, please do not miss any steps.
I have been working on this for the last few weeks and got nowhere so I really appreciate any help you can give me.
Thank you for your help.
Please note: i have been informed by a few people that equation 2 could actually be wrong and should be Sin(Beta) = 2Sin(Alpha) but either way i still dont undertsand how its dervied.
Please note: This is not a homework question. I work in Engineering.
Firstly Thank you for reading my post.
I am trying to learn a technique called Hallade which is used on the Railway to design curves.
I have some notes (attached).
The bit I fail to understand is on page 8.
Three equations are presented:
1) Sin (Alpha) = 4V/C
2) Sin (Beta) = Sin(2Alpha)
3) Sin (Beta) = 8V/C
I understand how equation 1 was derived but I do not understand how equation 2 & 3 was derived???
I was wondering if anyone could help shed some light into how equation 2 & 3 was derived, please do not miss any steps.
I have been working on this for the last few weeks and got nowhere so I really appreciate any help you can give me.
Thank you for your help.
Please note: i have been informed by a few people that equation 2 could actually be wrong and should be Sin(Beta) = 2Sin(Alpha) but either way i still dont undertsand how its dervied.
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