equation curve: what instructions?

[desMoira]

I created a solid of revolution from a curve that nominally from equation should be an ogive. I say nominally as on excel actually the profile is correct, but in setting the equation for proes I do not tell you that it comes out!
in the help says that all trigonometric functions use the degrees, but in this way it was mistaken. So what?
I need your help!

 

[desMoira]

/* profilo ld-haack
/* theta=arccos(1-2x/l)
/* y=r*sqrt((theta - sin2theta/2)/pigreco)

/* da excel
/* 2*(arccos(1-2*(d163)/180))
/* 60*(radq((f163)/2)-(sen(f163)/2)/(radq(3.1416))

/* neck.
/* 2*(acos(0.0174*(1-2*(x))/180))
/* 60*(sqrt(((f163)/2)-(sin(0.0174*f163)/2))/(sqrt(3.1416)

l=180

r=60

a=acos (1-2*t)

b=r/sqrt (3.14159)

s=sin (2*a)

x=l*t

y=b*sqrt (a-(s/2))

z=0

 

[Prof.]

This is what you wrote in the pro-e report:
y=(60/sqrt(3.14159) * sqrt ((acos (1-(2*t)))) - (0.5*sin (2*acos (1-(2*t)))))))

try to correct it in this way (correct corrections):

y=(60/sqrt)pi) * sqrt ((acos(1-(2*t)))/180*pi(0.5*sin (2*acos (1-(2*t))))))

the arccoseno of pro-e from a value in degrees, but under the square root you have to have a climb, then you have to convert in radiants multiplying by pi-greco/180.

Moreover the pi-greco in pro-e you can indicate it with the symbol "pi", so you do not have to write the decimal figures.
Bye.

 

[Prof.]

I think you should change the axis of revolution.
Bye.

 

[desMoira]

thank you, prof, now the profile is perfect. you are a guarantee!:finger: