MIL-HDBK-1005/6

Table 1

Design Procedure

Transition

(7)

The central angle of the flexible transition is:

(flexible)

2a = 2 - 2s or,

curve

(continued)

2a '

(*D*1 % Dmax)

200

the coordinates for any P.C.C. are:

Xn = Xn-1 + Rn (sin 2n - sin 2n-1)

Yn = Yn-1 + Rn (cos 2n-1 - cos 2n)

Note: 2n, Xn, and Yn are used herein to designate

angles and offset distances from the T.S.C. to the

points of compound curvature only. They are not used

to designate angles or offsets to any arbitrary point

on the transition curve.

Complete

The tangent distance for the complete curve is:

Figure 8

curve

T = Xc - (Rc sin 2) + (Rc cos 2 + Yc) tan )

combination

2

Outside

Curve

Switch

(1)

This curve is identical with the switch curve

Figure 8

(fixed)

(inside or control)

(2)

The lead is:

Figure 8

Par. 3.10

ts = G sin 3E 49' 11"

Reduced

Gs at the S.C.T., by convergence of outer and

Figure 8

gage (Gs)

inner rails of switch curve is:

Gs = G cos 3E 49' 11"

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