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Pilot`s Notes Lancaster Pilot`s Notes

LANCASTER I, III & X

PILOT'S AND FLIGHT ENGINEER`S NOTES

Air Ministry, May 1944

41. Beam approach

  Indicated height: feet I.A.S. m.p.h. R.p.m. Approx. boost: lb./sq.in. Actions Change of trim
Preliminary approach 1,500 135 2,400 -1 Set 25° flap for all manoeuring Nose up srongly
On QDR +30° 1,500 135 2,630 -2 to 0 (descent at 400 ft/min +2 (level flight)    
At inneer marker 150 120 2,830 0 to +2 Flaps fully down Nose up slightly
Overshoot up to 300 130-
140
2,830 +9 Raise flaps to 23°
Raise undercarriage
Nose down slightly
Nose up slightly

All four throttles should be used together throughout the approach.

An increase in the rate of sink has no effect on the controls.

42. After landing

(i) Before taxying, raise the flaps and open the radiator shulters.

(ii) On reaching dispersal open up all four engines to not more than 0 lb./sq.in. boost and exercise the two-speed superchargers by changing to S (high) ratio, running in that ratio for 30 seconds and then changing back to M (low) ratio. Throttle back slowly and idle the engines for a short period at 1,000-1,200 r.p.m.

(iii) Before stopping ihe engines, open the bomb doors for bombing up (if required). -^

(iv) Switch off all booster pumps before stopping engines,

(v) Stopping engines, Merlin XX, 22, 24. With the engines running at 800 r.p.m.,turn OFF the master engine cocks and switch OFF the ignition after the engines have stopped.

(vi) Stopping engines. Merlin 28, 38 or 224. To stop an engine check that the air pressure gauge reads at least 130 lb./sq. in. (160 lb./sq. in. if Mod. 1116 fitted). If not, open up starboard inner engine to charge tne compressor, and then move the slow-running cut-out switch to the IDLE CUT-OFF (down) position with the engine running at about 800 r.p.m.

Note. — Merlin 28, 38 and 224 engines must not be stopped by turning off the muster engine cock, as this will empty the carburettor of fuel and fill it with air. This entails much trouble when starting the engine again.

When all the engines have stopped, switch off the ignition and turn off the engine master cocks.

Check again that all the booster pumps are OFF, then set the slow running cut-out switches to the ENGINE RUNNING position and the radiator shutter over-ride switches to AUTOMATIC.

Note. — If the slow-running cut-out switches are left in the IDLE CUT-OFF position or the radiator shutter over-ride switches are left in the OVER-RIDE position, the rams will return to the ENGINE RUNNING and AUTOMATIC positions respectively as soon as the master switch is turned to GROUND. Then, if any ground maintenance work is carried out which necessitates turning on and off the master switch, the rams are being continually operated.

(vii) Switch off all electrical switches and turn master electrical switch to GROUND.

(viii) Oil dilution—See Pilot's Notes General A. P. 2095. The correct dilution period for this aircraft is:

Air temperatures above—10°C. .. One minute ,,

................ below—I0°C. .. Two minutes

42A. A.S.I. conversion table

M.p.h. Knots M.p.h. Knots M.p.h. Knots M.p.h. Knots
85 74 118 103 145 126 165 144
92 80 120 104 150 130 170 148
100 87 125 109 155 135 180 157
105 91.5 130 113 160 139 190 165
110 96 135 117.5 165 144 200 174
112 97.5 140 122 170 148 360 313

OPERATING DATA

43. Engine data - Merlin XX

(i) Fuel. - 100 octane only.

(ii) Oil - See A.P. 1464/C.37

(iii) Engine limitations with 100 octane fuel:

      Boost Temperature °C
    R.p.m. lb./sg.in. Coolant Oil
MAX. TAKE-OFF TO 1.000 FEET M 3,000 +12    
MAX. CLIMBING
HOUR LIMIT
M
S
2,850 +9 125 90
MAX. RICH
CONTINUOUS
M
S
2,650 +7 105 90
MAX. WEAK
CONTINUOUS
M
S
2,650 +4 105 90
COMBAT
MINS LIMIT
M
S
3,000
3,000
+14
+16
135
135
105
105
OIL PRESSURE:
MINIMUM IN FLIGHT
.. .. .. .. 30lb./sg.in
MINIMUM TEMPS FOR TAKE-OFF: Oil
COOLANT
.. .. .. 15°C
60°C

44. Engine data - Merlin 22,28 or 38

(i) Fuel. - 100 octane only.

(ii) Oil - See A.P. 1464/C.37

(iii) Engine limitations with 100 octane fuel:

      Boost Temperature °C
    R.p.m. lb./sg.in. Coolant Oil
MAX. TAKE-OFF TO 1.000 FEET M 3,000 +14    
MAX. CLIMBING
HOUR LIMIT
M
S
2,850 +9 125 90
MAX. RICH
CONTINUOUS
M
S
2,650 +7 105 90
MAX. WEAK
CONTINUOUS
M
S
2,650 +4 105 90
COMBAT
MINS LIMIT
M
S
3,000
3,000
+14
+16
135
135
105
105
OIL PRESSURE:
MINIMUM IN FLIGHT
.. .. .. .. 30lb./sg.in
MINIMUM TEMPS FOR TAKE-OFF: Oil
COOLANT
.. .. .. 15°C
60°C

45. Engine data - Merlin 24 or 224

(i) Fuel. - 100 octane only.

(ii) Oil - See A.P. 1464/C.37

(iii) Engine limitations with 100 octane fuel:

      Boost Temperature °C
    R.p.m. lb./sg.in. Coolant Oil
MAX. TAKE-OFF TO 1.000 FEET M 3,000 +18*    
MAX. CLIMBING
HOUR LIMIT
M
S
2,850 +9 125 90
MAXIMUM
CONTINUOUS
M
S
2,650 +7 105 90
COMBAT
MINS LIMIT
M
S
3,000 +18* 135 105
OIL PRESSURE:
MINIMUM IN FLIGHT
.. .. .. .. 30lb./sg.in
MINIMUM TEMPS FOR TAKE-OFF: Oil
COOLANT
.. .. .. 15°C
60°C

* +18 lb./sg.in. boost must not be used below 2,830 r.p.m.

46. Flying limitations

(i) The aircraft is designed for manceuvres appropriate to a heavy bomber and care must be taken to avoid imposing excessive loads with the elevators in recovery from dives and in turns at high speed. Spinning and acrobatics are not permitted. Violent use of the rudder at high speeds should be avoided.

(ii) Maximum speeds in m.p.h. I.A.S.:

Diving ...... 360

Bomb doors open .......as for diving

Undercarriage down.....200

Flaps down.............200

(iii) Maximum weights

Take-off and straight flying ......... 63,000 lb.

Take-off and straight flying.................... ***64.000 1b.

Take-off and straight flying.................... **65,O0Otb.

Take-off and straight flying.................... *72OOOIb.

Gentle manoeuvres.............................. 63.000 lb.

Landing and all foims of flying................ 55,000 lb.

Landing ................................. *60,000 lb.

* These mights are permitted if Merlin 24 or 224 power plants are fitted, paddle-bladed propellers are fitted, Lincoln type undercarriage and tyres (Mod. 1195) are fitted and special adjustments are made to the tyre and oleo leg pressures. A careful check on aircraft structure must be kept and runways only must be used.

**This weight is permitted provided the following mods, are incorporated : Mud. 503 or 518, Mod. 588 or 598, Mod. 811 or SI/RDA. 600 ind Mod.1004.

***This weight is permilted for Lancaster ASR. Mk. III.

(iv) Bomb clearances angles:

Divi .........30°

Climb.........20°

Bank..........10° (with S.B.C.25')

(V) Airborne lifeboat Mk. IIA (fitted on Lancaster ASR. Mk. III)

(a) The lifeboat may be dropped at any speed up to 138 m.p.h. (120 knots) I.A.S. provided the aircraft is in straight and level flight, without sideslip.

(b) The lifeboat may be jettisoned at any speed up to the limiting speed of the aircraft.


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