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Aviation History
1945
1945 - 1054.PDF
FLIGHT MAY 31ST, 1945 HANDLEY PACE CIVIL PROGRAMME HALIFAX TRANSPORT Four Bristol Hercules Engines General Data Wing span ... 104 ft. 0 in. Wing area .. ., .. . . .. ... 1.275 sq. ft. Tareweidht 37,7501b. Removable equipment and crew ... 2,850 1b. Fuel (normal tanks) 2,190 Imp. ga!s. Fuel (long-range tanks) .. 2,880 „ , Oil 128 gals. Basic equipped weight . ... ... 40,6001b. Engines 4 iiristol Hercules of 1.660 li.p. Airscrews ... dc Havilland Hydromatic three-bladers, fully feathering. Performance Max. level speed 820 m.p.h. Max. weak-mixture cruising at 10,000ft . 260 „ " „ 15,000ft 270 „ Economical cruising speed at 10,000ft ... ... 200 „ 15,000ft. 210 „ Range and Load A: 65,000 Ib. gross weight latuHns weigh!, 55,000 Ib.): Max load 12,100 !b. Range with mas. load .. . ... 1,810 miles Range with 10 000 lb. load 2,150 ,. Max. range (normal tanks) ... 2,530 Load for max. range (normal tanks) ... ... ... 7,750 1b. Max. range (long-range tanks) ... .. ... 3,510 milev Load for max range (long-range tanks) ... .. .. 2,5O0lb. A 68 000 Ib. gross weigh! landing wJghl, 57,000 Ib.): Max. load Range w;tb max. load Range with 12,500 lb. load Max. range (normal tauks) Load for max. range (normal tanks) Max. range (long-range tanks) Load for max range (long-range tanks' 14,100 Ib. 1,860 mile* 2,120 „ 2,420 „ 10,750 lb. 3.S60 miles 5,450 Ib. «This pannier can carry loads (fairly dense, one supposes) of up to 8,000 lb. weight. If all n passengers are carried, with their luggage, over the maximum range with normal tanks ot 2,530 miles, they will not leave all of the 8,000 lb. load available for the pannier, but only some 5,250 lb. However, even this would be an acceptable payload if carried in the form of mails. If the gross weight is in- creased from 65,000 lb. to 68,000 lb., as it can be, the pannier could be loaded to full capacity. Such a com- bination would, therefore, be quite useful on many of the Empiie routes The table shows that even on much longer ranges the payload is still very substantial at the overload gross weight of 68,000 lb. Hatches fore and aft enable the pannier to be loaded and unloaded from below, and as the pannier itself is raised and lowered by hoists in the aircraft, it would be possible for standardised loads to be placed in readiness in a pannier, ready for transfer as a complete unit to the aircraft, thus making possible a quick "turn-round" at airports, one pannier being unshipped and the waiting one hoisted on board to take its place. Hermes Freighter in the cargo version of the Handley Page Hermes, the main structural difference is in the floor. The passenger machine, it may be recollected, has a pressure cabin. This, of course, is not needed for the freighter, and instead there is a specially constructed floor designed to support the very heavy concentrated loads which it may be ex- pected to carry. Lashing points, in the form of large substantial rings, are provided at frequent intervals on the floor and on the fuselage walls. When not in use these ring* art- located in channels so as to lie flush with the surface. The main cargo compartment is more than 40ft. long and has a capacity of 3,000 cu. ft. In addition there are two holds in the underside of the fuselage, under the floor These have a combined capacity of 190 cu; ft., and have loading hatches accessible from the outside. The forward hold can also be reached from inside the machine during flight Kxternally the cargo Hermes differs but'little from the passenger version The most noticeable change is the fitting oi large doors on the port side, These doors provide HERMES CARGO CARRIER Four Bristol Hercules Engines (over 1,650 h.p. for take-off) General Data Wing span • •• Wing area Bare weight .. . Normal fuel capacity... .. ... Long-range capacity .. Oil capacity Max. take-off weight Landing weight Performance Max. level speed Max. weak-mixture cruising speed ... .. Most economical cruising speed .. .. Rate of climb (sea level) Time to 10,000ft .-. Range and Payload At 240 in.p.h. Range with 18,000 lb. load ... 1,600 miles 113 ft. 0 in 1,408 sq. ft 37.B42 Ib. 2,574 gals. 2,874 „ 120 „ 75,000 Ib. 70,000 „ 16,000 lb. „ 13,0001b. „ Max. range (normal tanks) .. Corresponding.load ... Max. range (long-range tanK> Corresponding load 1,880 2,340 2,700 10,720 Ib. 3,040 miles 8,240 lb. 337 m.p.h. 284 104 ,, 1,010 ft., rain. 10 mins. At 194 m.p.h. 1,745 miles 2,060 , , „ 3,030 „ 10,720 lb. 3,445 mile? 8,240 lb. an entrance measuring git. 4m. by 5ft. gin. for the loading of bulky freight. Loading can be carried out by means of a ramp, gantry or mechanical loading truck. Speed-effect on Range Reference has already been made to the efficiency of the Hermes from the point of view of load-carrying capa- city as compared with the converted Halifax. From the table of data an additional fact emerges: the effect of increasing the cruising speed is relatively small. When the machine is fitted with long-range tanks and carrying a payload of 8,240 lb., the maximum range is only de- creased from 3,445 miles to 3,040 miles by increasing the average cruising speed from 194 m.p.h. to 240 m.p.h. That means, of course, that if a particular cargo is wanted in a great hurry, the operator can oblige the shipper with- out incurring a prohibitive fuel cost thereby. On the other hand, where punctuality is essential, there is the, possibility of increasing the cruising speed on any par- ticular trip in order to fight strong head winds. That the Hermes will have to be a " mainliner" appears obvious from the wing loading of 53 lb./sq. ft. A long concrete runway would seem to be essential for the take-off; and at the maximum permissible landing -weight of 70,000 lb. the wing loading is still about 50 lb./sq. ft., at which loading the touch-down would have to be made somewhere in the 100 m.p.h. neigh- bourhood. Since, however, the machine is most likely to be used on fairly long stages, it will probably not ve'ry often be required to land at a weight of 70,000 lb. It seems probable that the stages will usually be of some 1,500 miles, during which something like 11,250 lb. of fuel • will have been consumed, thereby bringing the landing weight down to 63,750. lb., or a wing loading of approxi- mately 45 lb./sq. ft. Even at this relatively long range, the payload will be in the neighbourhood of nine tons. 35,000 AIRMEN TRAINED IN AUSTRALIAM ESSAGES of congratulation on the Australian share in theEmpire Air Training Scheme, now closed down, have been exchanged between the Minister for Air of the Commonwealth of Australia, Mr. A. S. Drakeford, and the Secretary of State for Air, Sir Archibald Sinclair. Mr. Drakeford's messagereveals that Australia provided 35,000 trained air crew under the scheme. In the course of his message Mr. Drakeford said : "A mag-nificent chapter of history has ended with the closing down of the Empire Air Training Scheme. The fact that theDominions are now able to discontinue large-scale training tells its own story of accomplishment. . . . The scheme enabled IheEmpire to turn alarming numerical inferiority into overwhelm- ing superiority in numbers and quality of air crew."
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