( , , 3), . , , .. . , , , .. .
(, ..), , :
F = m/(h*r*l), (22)
F - , 2;
h - , ;
r - , /3;
l - :
- l = 0,8-0,9,
- l = 0,5-0,7.
, (, , ) :
F = m*f/(q*n*l) (23)
F - , 2;
m () , ();
f , , 2;
q ( ), ();
l :
- 0,55-0,60;
- 0,50-0,60;
n ;
( ) , , :
- n = 1-3,
- n = 1-5,
- n = 6-10.
13. 10 , 1 200 . 4 . , - 1,2 .
. 6 r = 1200 /3, l = 0,8.
10 200 /*4 *10 = 8000 .
(22) F = 8000/(1,2*1200*0,8) = 6,9 2.
14. 20 . 3 ( 240 ), 60 . 412310127 .
. , , m = 20000*350/240 = 29167 , 20000 , 350 , 240 ( 3). , , , f = 0,412*0,310 = 0,128 2. q = 60 . n = 8. l = 0,6.
(23) F = 29167*0,128/(60*8*0,6) = 13 2.
15. 6 150 , 60 .
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|
. , 6 m = 6000 . , , , , f = πr2 πD2/4, r D , . f = 3,14*0,62/4 = 0,283 2. q = 150 . n = 2. l = 0,5.
(23) F = 6000*0,283/(150*2*0,5) = 11,3 2.
1. 15 , 1 400 . 2 . , - 1,3 .
2. 20 , 10 . 1 6 . , - 1,5 .
3. 15 . 6 ( 250 ), 48 . 350264232 .
4. 10 . 14 ( 450 ), 28 . 317317173 .
5. 15 , 1 16 . - 20 . 50 . 650300 .
6. 10 , 1 220 . - 4 . 45 . 650300 .
7. 10 , 1 35 . - 25 . 140 , 50 .
8. 20 , 1 45 . - 12 . 100 , 50 .
9. 1,5 . 12 . 440220210 .
10. 0,8 . 8 . 300224126 .
3