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Aviation History
1946
1946 - 1064.PDF
MAY 30) DE HAVILLAND DOVE detachable at the fuselage, thus reducing overall trans- port width. At this point there are quick-break points for pipelines, electric services and control cables. In addition to the usual wing inspection panels, the leading edge may be detached to permit inspection back to the main spar and in order that the T.K.S. de-icing distributors may be incorporated at the will of the purchaser and without the necessity for separate production arrangements. Provision is made in all aircraft for the de-icing pipe runs and the electrical wiring. Accessibility Apart from the more normally considered advantages of a tricycle arrangement, the necessity for providing an adequate wheelbase has brought several incidental virtues. For stowage every advantage has been taken of the fuselage length ahead of the control cabin. In addi- tion to the luggage locker under the cockpit, three other compartments can easily be reached from ground level. Forward of the screen the deck fairing can be hinged upwards for access to the radio equip- ment, the rear of the dashboard, the controls and sundry ancillary services. On the starboard side there is a compartment for the battery, which is interior of the tail part of the fuselage can be reached through a door in the rear luggage locker bulkhead and the tail cone is toggle-fastened so as to be quickly removable. The rudder and elevator can be changed without disturbing the adjustment of the operating cables. Amongst the items which are interchangeable— so reducing the number of spare parts to be carried by an operator—are the two elevators with their trim tabs, the respective port and starboard tanks, and a number of the incidental parts of the nose and main undercarriages. One of the small but important war-time develop-ments has been that of special cements for both w The majority of theengine controls and lines are grouped ata break-down panel in the centre-sec-tion leading edge, which is hinged inhalves. These can, consequently, bequickly disconnec- ted during an enginechange without dis- turbance of the con-trol adjustments. mounted on runners for easy removal and attention, and another for the junction box. In the nose there is a compartment for the pneumatic items and reservoirs, which can be reached through a hinged door. In the luggage compartment below the control cabin the various interior panels are quickly detachable in order that the control cables and the various electric and pneumatic lines can be reached for any necessary attention. There is a set of inspection doors below the fuselage for reaching the elevator and rudder control cables, so there will be no need for the cabin floor to be disturbed. The With a low-wingarrangement and comparatively small-diameter airscrews Ax. has been possibleto make the Dove's undercarriage legsshort and con- sequently light inweight. bonding to metal and metal-to-metal joints. The de Bruyne Redux process is used to a considerable extent in the Dove for the attachment of stringers to the skin both in the wings and the fuselage, and spot welding is also used where possible. Thus, in each case, there is a reduction of the number of rivets required in the struc- ture, and both weight and skin friction are thereby reduced, while rather lighter gauge material can be used^ During the assembly of the machine the surface is pro- tected by a cellulose skin; this is sprayed on and, when the aircraft is ready for test, can be quickly peeled off- Sub-Assemblies Although of "continuous" construction throughout its length, the fuselage is actually made in three parts and these three are further sub-divided, in Mosquito production fashion, for ease of manufacture. The main section, from the structural bulkhead aft of the control cabin to the rear luggage bulkhead, is jigged in four longitudinal sections, comprising the roof, the two sides and the floor, each of which can be partly upholstered and equipped before the four are riveted together. In this central section of the fuselage there are double curvatures only in the portion aft of the passenger bulkhead, where the section is starting to taper off towards the tail. The
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