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`Demonstrates a technique for finding the angle where the RA is half of max. |

` Demonstrates a technique for finding the angle where the RA is half of max. ` Also demonstrates how the RISE limit can be used to ensure that EQU is less ` than the angle where RA is half of the maximum RA. macro maxra2 `Finds the first heel angle where the RA is half of max. `create a constant heeling arm which is MaxRA/2 `use solve to find intersection of RA curve and this heeling arm lim off | hmmt off variable maxarm, maxmmt2, angmax2 lim ra at max > 1 ra 0 2 /lim /noprint set maxarm = {limmarg} div 100 plus 1 `\ Maximum RA = {maxarm:3} set maxmmt2={maxarm} times {weight} div 2 hmmt {maxmmt2} solve set angmax2 = {HEEL} \ Angle at half max RA = {angmax2:2} \\ lim off | hmmt off / macro lim_HM `set limits and heeling moment due to anchor towline lim(1) angle from equ to ABS {angmax2:2} >0 lim(2) angle from equ to ABS 15 or DI0 > 0 lim(3) rise > 1 `this limit is equivalent to limit 1 hmmt 123.0 /c1 / proj maxra2 read fv report weight 200 3f 0 10 .maxra2 .lim_HM angles 0 2 heel 0 ra /lim page solve maxvcg .maxra2 .lim_HM heel 0 ra /lim \Note that limits 1 & 3 both have zero limit margin. print preview report off |

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