. , , , . (. 26.6).
, , . , , , . .
26.6
( 70 100 ) , , , .
= h1 + h2, h1 h2 . , , , 15 30 . .
h1 . h1= h3 + h4 (. . 26.6). ()
h3 = (` - 1)(h1 + h2) 0. 05 , (26.9) ` .
h4 4.5 6.2 -5 6 -7.5 -8.
, , . , . 0.6 2.5 ( 3.5 ). 5 10 3 1.0 2.0 .
V (3) ℓ ( ), h4 h5, (. . 26.6):
V = ℓ (h4 + h5)/`, (26.10) , ( = 1.5 2.0 ).
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( 0.8 1. 0 ) . 1.6 .
ℓ ( ) [ . (26.16)]. . , - . ; .
Q, nV . t = n
nV P ℓ(h4 + h5)/ K` Q n , (26.11)
200 220 300 320 3 -5 -8. ( ) , .
( ) () R R
= (26.12)
W``c ( ) (3/) ( )
W`c = , (26.13)
W` = W`` L L . L = L. (26.8).
()
min = 2 + ctg +12/ (26.14)
, , , ( ), , ( , , ) . 2.8 8.0 . 3/ 0.50 0.75; 1 300 800 3; 140 280 3/. 1 - . .
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. , , . .