Shroud Equation from Tim's first book?

Question

Can someone post or send me the shroud equation from Tim Van Milligan's first "Design & Construction of Model Rockets"? It's the one with a green cover & one rocket blasting off. I own the book, but that page fell out. Thanks. -- Richard "my Team America kids need it" Hickok

shockwaveriderz · Accepted Answer

will this work: B)

Kevin Kuczek · Answer

Wow, just looked at that mess and someone needs to take a refresher course in how to reduce algebraic equations.

I use, using the same nomenclature: R1=inner radius of shroud R2=outer radius of shroud H= length of shroud D2= large Diameter D1=small diameter P=angle between R1 and R2

R1=D1*H/(D2-D1) R2=R1+H P=180*D2/R2

Kooch

Leonard Fehskens · Answer

(Kevin Kuczek) wrote innews:     Sorry, it ain't that simple.len.

Bob Kaplow · Answer

news:...It's actually pretty easy t derive from scratch...	Bob Kaplow	NAR # 18L	TRA # "Impeach the TRA BoD"		>>> To reply, remove the TRABoD!

Reece Talley · Answer

Take a look in the Handbook of Model Rocketry. I'm not sure which versionbecause I don't have access to it right now but, there was a formula inthere for making reducing cones and it worked well. It was also a whole lotsimpler than that stinker listed in an earlier post.

Gary A. Crowell Sr. · Answer

writes:since we're posting code now:Private Sub ShroudCalc(Dia1 As Single, Dia2 As Single, Length As Single, Rad1 AsSingle, Rad2 As Single, Arc As Single, taper As Single)Dim SmallDia As Single, LargeDia As SingleDim D As Single, E As Single    If Dia1 = Dia2 Or Length = 0 Then Exit Sub    If Dia1 > Dia2 Then        LargeDia = Dia1        SmallDia = Dia2    Else        LargeDia = Dia2        SmallDia = Dia1    End If        'Despite their slightly different form, these three sets of equations give    'identical results for Rad1, Rad2, and Arc.  The intermediate 'E' is    'different, but that makes no practical difference.    'Van Milligan'    D = (LargeDia - SmallDia) / 2'    E = Sqr(Length ^ 2 + D ^ 2)'    Rad1 = E * SmallDia / (LargeDia - SmallDia)'    Rad2 = E * LargeDia / (LargeDia - SmallDia)'    Arc = 180 * LargeDia / Rad2 'degrees        'Stine Handbook of MR'    D = (LargeDia - SmallDia) / 2'    E = 1 / Sqr((Length / D) ^ 2 + 1)'    Rad1 = SmallDia / (2 * E)'    Rad2 =...

Shroud Equation from Tim's first book?

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