NO A A PROFESSIONAL PAPER II 



10 10 20 30 40 50 50 TO 



HHHHHE 



90 100 STATUTE MILES 



10 20 » 40 50 60 



90 100 110 t^Q 130 UP 15 KILOMETERS 



70 aO 90 100 NAUTrCAL MILES 



FIGURE 8-2. — Finite element triangular grid. 



170 



