William Daymont notebook on York, Lancaster, Halifax and Liberator
Title
William Daymont notebook on York, Lancaster, Halifax and Liberator
Description
Covers loading of aircraft, best position for centre of gravity for Avro York aircraft, servicing for transport command aircraft (York), and list of air publications for York. Followed by notes for Lancaster, weights, speeds, endurance, radio ranges. Continues with York fuel system and hydraulics, Then notes on Merlin engines, Liberators including fuel system, engine limitations, hydraulics and pre-flight checks, engine handling and limitations. Notes on Halifax include fuel system, hydraulic pressures and some weight calculations,
Creator
Coverage
Language
Type
Format
Thirty page notebook with covers and handwritten entries
Conforms To
Publisher
Rights
This content is available under a CC BY-NC 4.0 International license (Creative Commons Attribution-NonCommercial 4.0). It has been published ‘as is’ and may contain inaccuracies or culturally inappropriate references that do not necessarily reflect the official policy or position of the University of Lincoln or the International Bomber Command Centre. For more information, visit https://creativecommons.org/licenses/by-nc/4.0/ and https://ibccdigitalarchive.lincoln.ac.uk/omeka/legal.
Contributor
Identifier
MDaymontWH1111945-181016-03
Transcription
Sgt DAYMONT. W
[underlined] S.O. BOOK 136. [/underlined]
Code 28-73-0.
[drawings]
G [crest] R
SUPPLIED FOR THE PUBLIC SERVICE
DAYMONT.
and master of Liberators all Marks.
[page break]
[three drawings]
[page break]
[underlined] Loading of aircraft. [/underlined]
Distribution of weight not around C of G but usually in front. Distance times weight from balance point give total leaverage [sic] e.g. 1 lb at 6" would be 6 ins lbs.
[diagram]
On loading C of G & distance from D/P must be known.
Tare weight of YORK.
[calculations]
[page break]
Best position for C of G on YORK is about 42" to 43" aft of D/P.
[underlined] Simplified loading [/underlined]
a/c divided into compartments & distance from D/P is taken from centre of compartments. D/P in front of leading edge M/P.
MAX all up weight 63,000 lbs.
MAX landing weight 56,000 lbs.
FUEL TANKS ALL AFT of D/P + 60"
OIL TANKS -2.2"
WATER TANKS -142"
W/SCREEN DE ICING -168"
FL DECK -216"
PILOT -242"
NAV -186"
W/OP -200"
LUGGAGE COMP +436"
DR COMP. [indecipherable word] +542"
FUEL 7.2 LBS/GALL
OIL 9 LBS/GALL
[page break]
[underlined] Servicing Transport Command [/underlined]
[underlined] YORK [/underlined] Progressive inspection carried by engineer
[underlined] Grade l [/underlined] done before take off & at every stopping place [underlined] 1/2 HR. [/underlined]
[underlined] Grade II [/underlined] every 15 hours + or - 3 hours plus Grade I [underlined] 6 HRS [/underlined]
[underlined] Grade III [/underlined] every 30 + or - 6 [underlined] HRS. [/underlined]
[underlined] 12 HRS [/underlined]
Engineer supervises Grade I & II
Grade l & II signed in travelling 700 in DI column - F/E
Base inspection given before leaving [underlined] and [/underlined] on return
Now[?] 700 on every trip
[page break]
AIR PUBLICATION FOR YORK I
[underlined] AP 2484 [/underlined]
MERLIN 22-24 [underlined] AP 21406N [/underlined]
DH PROPS [underlined] AP 1538 D [/underlined]
Lancaster fuel system.
INBOARD TANKS & in bomb bays 400 galls in each
Capacity 2954 + over load.
2154
[page break]
[underlined] Lancaster. [/underlined]
AUW 65,000 LBS. 165 m. IAS.
[symbol] of incidence 4°
Gives L/D ratio of 14.1.
If weight is reduced optimum angle is also reduced so increasing speed.
[calculations]
[symbol] distance covered is doubled with small increase in fuel consumption.
If headwind is more than 30 MPH divide speed of wind by 4 & add to 165
[calculation]
DO NOT [underlined] EXCEED [/underlined] 2400 RPM.
TAIL WIND OVER 30 MPH
[calculation]
[page break]
[underlined] ENDURANCE [/underlined]
LOW AS SAFETY PERMITS.
SET RPM AT 1800 & REDUCE AIRSPEED TO SAFETY MARGIN USING THROTTLE
[underlined] HYDRAULIC SYSTEM [/underlined]
MINERAL OIL USED.
19 1/2 gl[?] capacity. DTD 43A
Oil 37 1/2 galls cap + 4 1/2 g. air space[?]
[page break]
[underlined] Purpose of Radio Range [/underlined]
To give a path between aerodromes
To give means of descent through cloud.
Beam 3° wide constant.
[diagram]
[page break]
[underlined] YORK [/underlined] [underlined] FUEL SYSTEM [/underlined]
No 1 452 galls
No 2 383
No 3 114
FUS. TANK 580 galls common overload to both No 1 tanks
TOTAL FUEL 2478
[diagrams]
[page break]
[underlined] YORK [/underlined] [underlined] HYDRAULICS [/underlined]
28-30 LBS PRESS. ON TOP OF RESERVOIR MIN PRESS. 8LBS. OTHERWISE SAME AS LANCASTER.
[diagrams]
[page break]
[underlined] YORK LOADING POSITIONS [/underlined]
[diagram]
-11.7' -4,75' +4' +12.75 +20.75 +27.5
Crew position -20', Limits 28.5' -30.33' if nose is taken as reference point
[page break]
[underlined] MERLIN [/underlined]
[underlined] MKS. [/underlined] T24 T24/1 T24/2 T24/3.
[underlined] ENGINE LIMITATIONS [/underlined]
MAX CLIMB 2850/ +9 1 hour
MAINTAINED UP TO 10,000' IN 'M' GEAR.
MAINTAINED UP TO 17,500 IN 'S' GEAR
TAKE OFF 3,000/ +14
CUT OUT PULLED 3,000/ +18
MAX RPM 1800
OIL TEMP. MAX 5 MINS 105°
NORMAL 60°
MIN 15° – 20°
OIL PRESSURES
NORMAL 90 LBS
MIN. 30 – 40 LBS.
COOLANT
MAX 5 MINS. 135°
NOT ABOVE 120° FOR T.O.
NORMAL CRUISE 90° – 95°
CRUISING CONTROL
1. LONG RANGE CRUISE (ENDURANCE)
2. CONSTANT I.A.S. (RANGE)
3. CONSTANT POWER.
[page break]
[underlined] LIBERATOR. 12/9/45 [/underlined]
[underlined] FUEL SYSTEM: [/underlined]
OUTBOARD TANKS 506 galls CAP.
INBOARD TANKS 475 galls.
ACTUAL CAP 500 galls
450 galls
TOTAL CAP. 1,900 galls
[diagram]
[underlined] Overload. [/underlined] 3 cells each wing
187 galls each set[?]
[page break]
[underlined] ENGINE LIMITATIONS [/underlined]
[underlined] OIL PRESSURE [/underlined]
NORMAL 75 – 90
MIN. CRUISE 60 (65)
IDLE MIN. 15.
MIN. 50
[underlined] OIL TEMP [/underlined]
MAX. 70°
LIMIT 5 MINS. 95°
MIN FOR TAKE OFF 40°
[underlined] CYL TEMP [/underlined]
MAX 230°
LIMIT 5 MINS. 260°
MIN FOR TAKE OFF 120°
MAX BEFORE TAKE OFF AND STOPPING 205°
[underlined] FUEL PRESSURE [/underlined]
MAX 17 LBS/[symbol]"
MIN 14 LBS/[symbol]"
DESIRED 15 LBS/[symbol]"
IDLING 7 LBS/[symbol]"
[page break]
[underlined] HYDRAULICS [/underlined]
[underlined] UNLOADING VALVE [/underlined]
Maintains press. in accumulators between 850 & 1050 LBS
[underlined] 2 accumulators [/underlined] for brakes
connected but press. prevented from flowing between by NAV.
[diagram]
[page break]
[diagram]
[page break]
[underlined] Pre flight check [/underlined]
General aspect
Oleo. 3 7/8 main 4 5/16 nose (40,000 LBS)
TYRES 60 LBS m. & 38 LBS T
Check oleo locks.
Petrol cover S/V plugs
General check of covers & fuel filler caps. dip tanks
[underlined] INSIDE [/underlined] all equipment secure.
HYDRAULIC Reservoir (1/2" of red line OK)
FUEL COCKS.
HYD. Booster pump on.
[underlined] cockpit check [/underlined]
A.P.U. switch on 2 battery switches
[underlined] MAG. DROP. [/underlined] 75 each mag.
[underlined] Generators. [/underlined] switch off A.P.U. [deleted] switch [/deleted][inserted] check [/inserted] each voltage individually & each ammeter
[page break]
[diagram]
[page break]
[diagram]
[page break]
[underlined] ENGINE HANDLING [/underlined]
1. 6 blades turned by hand before starting (forward).
2. Mixture control on idle cut off when engine is stopped.
3. NORMAL R.P.M. 2700 + 48"
CLIMBING R.P.M. 2500 45"
CRUISING RPM 2250 32” AUTO [inserted] MAX [/inserted] LEAN
4. [underlined] Carburetta icing, [/underlined] inter cooler cools down air after leaving turbo shutters on inter cooler allows heating of air.
[page break]
MAX AUW TO 64000 LBS.
[diagram]
[page break]
[underlined] INSPECTIONS [/underlined]
[underlined] BASE INSPECTION. [/underlined]
GRADE I (NORMAL DI).
GRADE II
GRADE III
[diagram]
[page break]
[drawings]
[page break]
[two blank pages]
[underlined] LIMITATIONS [/underlined]
[table]
[page break]
[underlined] HALIFAX VI [/underlined]
[underlined] FUEL SYSTEM [/underlined]
No. 1 TANK CAPICITY 62 GALLS
No. 2 TANK CAPICITY 150 GALLS
No. 3 TANK CAPICITY 247 GALLS
No. 4 TANK CAPICITY 188 GALLS
No. 5 TANK CAPICITY 161 GALLS
No. 6 TANK CAPICITY 122 GALLS
No. 7 TANK CAPICITY 165 GALLS
[underlined] TOTAL [/underlined] 2190
[underlined] HYDRAULIC PRESSURES [/underlined]
U/C 250 LBS
POWER GENERAL 1850 LBS MIN
FLAPS 400 LBS DOWN
600 LBS UP
TAIL WHEEL 250 LBS
BOMB DOORS 1050 LBS CLOSED
700 LBS OPEN
[underlined] BRAKES [/underlined] 200 LBS MIN
[page break]
[blank page]
[page break]
[calculations]
[page break]
[calculations]
[page break]
[calculations]
[page break]
FRANCE & N. AFRICA 200 FRANCS £1
ITALY 400 LIRE £1
TRIPOLI 480 LIRA £1
EGYPT 97 1/2 PIASTRES £1
PALASTINE 1000 MILS £1
IRAQ 1000 FILS – 1 DINAR £1
INDIA RUPEE 1/6
[page break]
[underlined] W. DAYMONT [/underlined]
[drawing]
[underlined] S.O. BOOK 136. [/underlined]
Code 28-73-0.
[drawings]
G [crest] R
SUPPLIED FOR THE PUBLIC SERVICE
DAYMONT.
and master of Liberators all Marks.
[page break]
[three drawings]
[page break]
[underlined] Loading of aircraft. [/underlined]
Distribution of weight not around C of G but usually in front. Distance times weight from balance point give total leaverage [sic] e.g. 1 lb at 6" would be 6 ins lbs.
[diagram]
On loading C of G & distance from D/P must be known.
Tare weight of YORK.
[calculations]
[page break]
Best position for C of G on YORK is about 42" to 43" aft of D/P.
[underlined] Simplified loading [/underlined]
a/c divided into compartments & distance from D/P is taken from centre of compartments. D/P in front of leading edge M/P.
MAX all up weight 63,000 lbs.
MAX landing weight 56,000 lbs.
FUEL TANKS ALL AFT of D/P + 60"
OIL TANKS -2.2"
WATER TANKS -142"
W/SCREEN DE ICING -168"
FL DECK -216"
PILOT -242"
NAV -186"
W/OP -200"
LUGGAGE COMP +436"
DR COMP. [indecipherable word] +542"
FUEL 7.2 LBS/GALL
OIL 9 LBS/GALL
[page break]
[underlined] Servicing Transport Command [/underlined]
[underlined] YORK [/underlined] Progressive inspection carried by engineer
[underlined] Grade l [/underlined] done before take off & at every stopping place [underlined] 1/2 HR. [/underlined]
[underlined] Grade II [/underlined] every 15 hours + or - 3 hours plus Grade I [underlined] 6 HRS [/underlined]
[underlined] Grade III [/underlined] every 30 + or - 6 [underlined] HRS. [/underlined]
[underlined] 12 HRS [/underlined]
Engineer supervises Grade I & II
Grade l & II signed in travelling 700 in DI column - F/E
Base inspection given before leaving [underlined] and [/underlined] on return
Now[?] 700 on every trip
[page break]
AIR PUBLICATION FOR YORK I
[underlined] AP 2484 [/underlined]
MERLIN 22-24 [underlined] AP 21406N [/underlined]
DH PROPS [underlined] AP 1538 D [/underlined]
Lancaster fuel system.
INBOARD TANKS & in bomb bays 400 galls in each
Capacity 2954 + over load.
2154
[page break]
[underlined] Lancaster. [/underlined]
AUW 65,000 LBS. 165 m. IAS.
[symbol] of incidence 4°
Gives L/D ratio of 14.1.
If weight is reduced optimum angle is also reduced so increasing speed.
[calculations]
[symbol] distance covered is doubled with small increase in fuel consumption.
If headwind is more than 30 MPH divide speed of wind by 4 & add to 165
[calculation]
DO NOT [underlined] EXCEED [/underlined] 2400 RPM.
TAIL WIND OVER 30 MPH
[calculation]
[page break]
[underlined] ENDURANCE [/underlined]
LOW AS SAFETY PERMITS.
SET RPM AT 1800 & REDUCE AIRSPEED TO SAFETY MARGIN USING THROTTLE
[underlined] HYDRAULIC SYSTEM [/underlined]
MINERAL OIL USED.
19 1/2 gl[?] capacity. DTD 43A
Oil 37 1/2 galls cap + 4 1/2 g. air space[?]
[page break]
[underlined] Purpose of Radio Range [/underlined]
To give a path between aerodromes
To give means of descent through cloud.
Beam 3° wide constant.
[diagram]
[page break]
[underlined] YORK [/underlined] [underlined] FUEL SYSTEM [/underlined]
No 1 452 galls
No 2 383
No 3 114
FUS. TANK 580 galls common overload to both No 1 tanks
TOTAL FUEL 2478
[diagrams]
[page break]
[underlined] YORK [/underlined] [underlined] HYDRAULICS [/underlined]
28-30 LBS PRESS. ON TOP OF RESERVOIR MIN PRESS. 8LBS. OTHERWISE SAME AS LANCASTER.
[diagrams]
[page break]
[underlined] YORK LOADING POSITIONS [/underlined]
[diagram]
-11.7' -4,75' +4' +12.75 +20.75 +27.5
Crew position -20', Limits 28.5' -30.33' if nose is taken as reference point
[page break]
[underlined] MERLIN [/underlined]
[underlined] MKS. [/underlined] T24 T24/1 T24/2 T24/3.
[underlined] ENGINE LIMITATIONS [/underlined]
MAX CLIMB 2850/ +9 1 hour
MAINTAINED UP TO 10,000' IN 'M' GEAR.
MAINTAINED UP TO 17,500 IN 'S' GEAR
TAKE OFF 3,000/ +14
CUT OUT PULLED 3,000/ +18
MAX RPM 1800
OIL TEMP. MAX 5 MINS 105°
NORMAL 60°
MIN 15° – 20°
OIL PRESSURES
NORMAL 90 LBS
MIN. 30 – 40 LBS.
COOLANT
MAX 5 MINS. 135°
NOT ABOVE 120° FOR T.O.
NORMAL CRUISE 90° – 95°
CRUISING CONTROL
1. LONG RANGE CRUISE (ENDURANCE)
2. CONSTANT I.A.S. (RANGE)
3. CONSTANT POWER.
[page break]
[underlined] LIBERATOR. 12/9/45 [/underlined]
[underlined] FUEL SYSTEM: [/underlined]
OUTBOARD TANKS 506 galls CAP.
INBOARD TANKS 475 galls.
ACTUAL CAP 500 galls
450 galls
TOTAL CAP. 1,900 galls
[diagram]
[underlined] Overload. [/underlined] 3 cells each wing
187 galls each set[?]
[page break]
[underlined] ENGINE LIMITATIONS [/underlined]
[underlined] OIL PRESSURE [/underlined]
NORMAL 75 – 90
MIN. CRUISE 60 (65)
IDLE MIN. 15.
MIN. 50
[underlined] OIL TEMP [/underlined]
MAX. 70°
LIMIT 5 MINS. 95°
MIN FOR TAKE OFF 40°
[underlined] CYL TEMP [/underlined]
MAX 230°
LIMIT 5 MINS. 260°
MIN FOR TAKE OFF 120°
MAX BEFORE TAKE OFF AND STOPPING 205°
[underlined] FUEL PRESSURE [/underlined]
MAX 17 LBS/[symbol]"
MIN 14 LBS/[symbol]"
DESIRED 15 LBS/[symbol]"
IDLING 7 LBS/[symbol]"
[page break]
[underlined] HYDRAULICS [/underlined]
[underlined] UNLOADING VALVE [/underlined]
Maintains press. in accumulators between 850 & 1050 LBS
[underlined] 2 accumulators [/underlined] for brakes
connected but press. prevented from flowing between by NAV.
[diagram]
[page break]
[diagram]
[page break]
[underlined] Pre flight check [/underlined]
General aspect
Oleo. 3 7/8 main 4 5/16 nose (40,000 LBS)
TYRES 60 LBS m. & 38 LBS T
Check oleo locks.
Petrol cover S/V plugs
General check of covers & fuel filler caps. dip tanks
[underlined] INSIDE [/underlined] all equipment secure.
HYDRAULIC Reservoir (1/2" of red line OK)
FUEL COCKS.
HYD. Booster pump on.
[underlined] cockpit check [/underlined]
A.P.U. switch on 2 battery switches
[underlined] MAG. DROP. [/underlined] 75 each mag.
[underlined] Generators. [/underlined] switch off A.P.U. [deleted] switch [/deleted][inserted] check [/inserted] each voltage individually & each ammeter
[page break]
[diagram]
[page break]
[diagram]
[page break]
[underlined] ENGINE HANDLING [/underlined]
1. 6 blades turned by hand before starting (forward).
2. Mixture control on idle cut off when engine is stopped.
3. NORMAL R.P.M. 2700 + 48"
CLIMBING R.P.M. 2500 45"
CRUISING RPM 2250 32” AUTO [inserted] MAX [/inserted] LEAN
4. [underlined] Carburetta icing, [/underlined] inter cooler cools down air after leaving turbo shutters on inter cooler allows heating of air.
[page break]
MAX AUW TO 64000 LBS.
[diagram]
[page break]
[underlined] INSPECTIONS [/underlined]
[underlined] BASE INSPECTION. [/underlined]
GRADE I (NORMAL DI).
GRADE II
GRADE III
[diagram]
[page break]
[drawings]
[page break]
[two blank pages]
[underlined] LIMITATIONS [/underlined]
[table]
[page break]
[underlined] HALIFAX VI [/underlined]
[underlined] FUEL SYSTEM [/underlined]
No. 1 TANK CAPICITY 62 GALLS
No. 2 TANK CAPICITY 150 GALLS
No. 3 TANK CAPICITY 247 GALLS
No. 4 TANK CAPICITY 188 GALLS
No. 5 TANK CAPICITY 161 GALLS
No. 6 TANK CAPICITY 122 GALLS
No. 7 TANK CAPICITY 165 GALLS
[underlined] TOTAL [/underlined] 2190
[underlined] HYDRAULIC PRESSURES [/underlined]
U/C 250 LBS
POWER GENERAL 1850 LBS MIN
FLAPS 400 LBS DOWN
600 LBS UP
TAIL WHEEL 250 LBS
BOMB DOORS 1050 LBS CLOSED
700 LBS OPEN
[underlined] BRAKES [/underlined] 200 LBS MIN
[page break]
[blank page]
[page break]
[calculations]
[page break]
[calculations]
[page break]
[calculations]
[page break]
FRANCE & N. AFRICA 200 FRANCS £1
ITALY 400 LIRE £1
TRIPOLI 480 LIRA £1
EGYPT 97 1/2 PIASTRES £1
PALASTINE 1000 MILS £1
IRAQ 1000 FILS – 1 DINAR £1
INDIA RUPEE 1/6
[page break]
[underlined] W. DAYMONT [/underlined]
[drawing]
Collection
Citation
W Daymont, “William Daymont notebook on York, Lancaster, Halifax and Liberator,” IBCC Digital Archive, accessed April 26, 2024, https://ibccdigitalarchive.lincoln.ac.uk/omeka/collections/document/33448.
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