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Aviation History
1921
1921 - 0643.PDF
SEPTEMBER 29, 1921 which is tacked or screwed on, according to local considera- tions. The cabin portion of the fuselage is triangulated by deeply spindled H-section diagonal struts, and it is of interest to note that three of these transmit the we: "Jit of the wing to the points on the lower longerons, where are attached the struts of the undercarriage. Two run from rear chassis strut fitting to the wings spars, and a third from the front chassis strut to the front spar. These struts are of large "Lion," the monoplane has seating accommodation, and agj,ple at that, for ten passengers inside the cabin, while if necessary one more can be carried in the pilot's cockpit. The seats are arranged in two rows along the sides of the r' oni, leaving a passage-way between the rows. The seats tnemselves are of the wickerwork type, which combines lightness with comfort. They are so attached to the floor of the cabin as to be readily detachable should it be desired to THE D.H.29 MONOPLANE : Three-quarter rear view. The tail shown in this photograph has been slightlyaltered, the elevator having horn balances projecting past the end of the tail plane, as shown in the plan view of the general arrangement drawings. dimensions, and look well capable of doing the work for which they were designed. In section the fuselage is unusual, inasmuch as the floor is considerably wider than the deck or roof. The reasons which led to the adoption of this cross section were various, chief being probably that of getting a wide base for the attachment of the undercarriage -struts. As the-wing is placed above the fuselage, there is naturally a considerable height from the ground to the wing tips, and lateral stability on the ground, therefore, has to be attained entirely by a wide wheel track. use the machine for carrying goods instead of passengers. The space available for goods then becomes 13 ft. 3 ins. by 6 ft. 6 ins. by 4 ft., equal to 345 cu. ft., not counting the luggage compartment, aft of the lavatory. A door in the port side of the fuselage gives access to the cabin, and in the wall at the end of the cabin is a door leading to the lavatory. Aft of the latter, and separated from it by a partition, is a luggage compartment. In the front-wall of the cabin is a trap-door giving access to the pilot's cockpit, which is in front of and above the cabin. It is thus possible The D.H. 2 9 Monoplane: Sketch showing Engine mount- ing, which is a detachable unit. O-H. Alurnmtumbrackets the usual wing-tip hoops being, of course, out of the question. It is, however, probable that in later machines the section •will be made rectangular, as this would considerably facilitate construction, where a departure from right angles at once means extra trouble and expense. The Cdbin As a commercial machine, the main feature of the D.rl. 29 is its large, light and airy cabin. Although being fitted with the same engine as that of the I>.H. 18, i.e. a 450 h.p. Napier for the navigator, wireless operator, or whoever is carried in. the pilot's cockpit, to come down into the cabin and give any desired information to the passengers. This might often be found advisable in order to reassure passengers. For instance, in the case of engine failure, the navigator might be able to reassure passengers that, although a forced landing was about to be made, there was good landing ground below, and no cause for worry ; or again, it might be necessary to alight at some aerodrome other than that of the port for which the machine was bound. For instance, fog migr.t be wirelessed 643
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