PART III - HANDLING
57. Climbing
(i) The recommended climbing speeds are:-
| |
100% r.p.m. |
93% r.p.m. |
97% r.p.m. |
Alt.
(ft.) |
Clean
a/c |
100 gal.
tanks |
167 gal.
tanks |
Clean
a/c |
100 gal.
tanks |
167 gal.
tanks |
Clean
a/c |
100 gal.
tanks |
| S.L. |
430 |
400 |
400 |
355 |
330 |
340 |
430 |
375 |
| 5,000 |
410 |
375 |
375 |
340 |
310 |
325 |
405 |
350 |
| 10,000 |
390 |
350 |
350 |
325 |
295 |
305 |
380 |
330 |
| 15,000 |
365 |
330 |
325 |
310 |
280 |
285 |
360 |
310 |
| 20,000 |
340 |
310 |
300 |
295 |
260 |
265 |
335 |
290 |
| 25,000 |
320 |
290 |
275 |
280 |
245 |
245 |
315 |
270 |
| 30,000 |
295 |
275 |
255 |
265 |
225 |
- |
295 |
250 |
| 35,000 |
270 |
255 |
235 |
245 |
- |
- |
270 |
230 |
| 40,000 |
240 |
230 |
- |
225 |
- |
- |
240 |
- |
(ii) It is recommended that whenever possible, the climb
be done at 93 per cent. r.p.m. as engine life is increased
considerably by avoiding the higher powers even though
the fuel consumption is increased slightly. Full power
climbs should be limited to as few as possible and even
then the period spent at full power should be kept to a
minimum.
(iii)At high altitudes the correct climbing speeds must be
maintained; should the speed fall below that recom-
mended, the rate of climb will be severely affected and
the speed can only be restored by diving the aircraft.
(iv) When trimmed, the aircraft holds the climbing speed
well and needs little attention. As height is gained the
airspeed can be reduced by using short blips on the
trimmer.
(v) The r.p.m. should remain constant as height is gained.
(vi) The cockpit can be pressurised before take-off and
should in any case be pressurised at about 12,000 feet
if a climb to height is intended.
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