, - , . . . . 19 , . ( . .) .
.
r . . . (Wmax) ( ), . . . (W = 0.7 Wmax), r.
( n = 1)
W,....................... 1.5 2 4 6 8 10 12 15 20 25
r, : .. 200 200 300 300 400 500 500 600 700 800 ..... 100 100 150 150 200 250 250 300 350 400
r 200 300 .
()
r. = k , (12.2) k , (k = 10-15); Q. , .
()
r = 200 (12.3)
, .
50 . .
, . , , () . , , .
, , . ( ). , (). , ; . , , .
|
|
Q () ():
rc = 9 ; (12.4)
rc = 25 (12.5)
20 :
rc = 10 (12.6)
rc = 29 ; (12.7) n` - .
20%.