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22. FUEL CAPACITIES AND CONSUMPTION
(1) Fuel capacities:
(a) Normal:
Two Main tanks (33 gals, each): 65 gallons.
One Reserve tank: 28 gallons.
Total: 94 gallons.'
(b) Long-range (totals):
With 2 fixed under-wing tanks (44 gallons each): 182 gallons.
With 2 x 45 gallon drop tanks: 184 gallons.
With 2 x 9O gallon drop tanks: 374 gallons.
(ii) The approximate consumtions (gals/hr.) in WEAK mixture ere follows:
| Boost lb/sq.in. |
2,650 R.p.m. |
2,300 R.p.m |
2,000 R.p.m |
| +4 |
55 |
50 |
45 |
| +2 |
52 |
45 |
42 |
| 0 |
47 |
42 |
38 |
| -2 |
42 |
37 |
34 |
| -4 |
37 |
33 |
30 |
| S ratio at 14,000-30,000 ft. |
|---|
| Boost lb/sq.in. |
2,650 R.p.m. |
2,300 R.p.m |
2,000 R.p.m |
| +4 |
57 |
51 |
47 |
| +2 |
53 |
47 |
43 |
| 0 |
48 |
43 |
39 |
| -2 |
43 |
39 |
35 |
| -4 |
38 |
34 |
31 |
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(iii) Tbe approximate consumptions in RICH mixture are as follows:
| R.p.m. |
Boost lb./sq.in. |
Gals/hr. |
| 3,000 |
+12 |
115 |
| 3,000 |
+9 |
100 |
| 2,850 |
+9 |
95 |
| 2,650 |
+7 |
80 |
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23. BEAM APPROACH
| STAGE |
Indicated
height (feet)* |
I.A.S.
m.p.h. |
R.p.m. |
Approx.
Boost |
Actions |
Change of
trim and
Remarks |
| Preliminary |
1,500 |
120 |
2,400 |
-2 |
Flaps down 30° |
Strongly nose down |
| Approach |
1,500 |
120 |
2,400 |
-1 |
Lower u/c on Q.D.R. over I.M.B. |
Strongly nose down |
At outer
marker
beacon |
600
|
95-100
|
3,000
3,000 |
-4
0 |
Flaps down 60° |
Nose down
Should give level flight |
At inner
marker
beacon |
100 |
90-95 |
3,000 |
|
|
|
| Overshoot |
Up to 400 |
95-100 |
3,000 |
Full
throttle |
Raise u/c and retrim
Raise flap to 30° and retrim
Raise flaps fully and retrim. Adjust boost and r.p.m. at 1,000 feet |
Nose up
Nose up
Nose up |
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* - Altimeter adjusted for Q.F.E. and touoh-down error as follows:
At take-off, with no flap, the altimeter reads -30 feet.
At touoh-down, with 60° flap, the altimeter reads -55 feet, so add two millibare to Q.F.E. to give zero reading at touoh-down.
Note: The above speeds should be increased by 5 m.p.h. for Mark IID and IV aircraft.
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