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Aviation History
1948
1948 - 1311.PDF
August 19th, 1948 211 bridge member for the main wing spar attachment, and there is a doubled pressed diaphragm bridge for the secondary spar. Two robust frames in the tail cone carry the tail unit. On the underside of the fuselage, on production aircraft, lugs will be provided for easy float attachment, while to comply with LC.A.O. requirements two escape hatches have been designed in the starboard side of the roof, thus allowing the port side of the roof to be used for control cables and.pneumatic runs. The nose of this aircraft has been made to hinge open from a point just forward of the windscreen to give easy access to the back of the instrument panel, the controls and pneumatic runs, and the two 12-volt 30 amp/hr Exide batteries. Inserted just below the point of the hinged nose is a Harley taxi lamp giving 360 deg. of light around the aircraft. The fully castering double •Vu c HINGED NOSE. DE HAVILLAND HYDROMATIC REVER- SIBLE-PITCH AIRSCREW 500 H.P. ALVIS LEONIDES ENGINE fated The wcfct light Inspection behind the instrument panel is simplified by a door in the nose. A starter plug is on the port side. The prototype has a sideslip indicator in front of the nose. nose-wheel retracts backwards and is enclosed behind double doors hinged on each side. Pick-up points are so designed on both top and bottom booms that the stresses are spread across formers of the entire nose sec- tion. The cockpit has glass windows with an amber-tinted Perspex roof, and a windscreen which has success- fully withstood the 4-lb bird test at Famborough. Clear-vision panels are standard, and windscreen wipers will be fitted to production aircraft. The view is enhanced by the deep and only slightly inclined vee - windscreens, about i6in from the pilot's face, and the short nose which falls away sharply. Normal crew for operating the Per- cival Prince would be pilot •and navigator/radio-operator. It will not, therefore, be standard to equip the starboard seat with dual controls, although a set could be included with- out difficulty, as in the prototype now flying. Half-spectacle type of con- trols are employed, with a push-pull action. The rudder bars are on the same principle as those of the Prentice, which are capable of considerable adjustment whilst retaining parallel action and unchanged leverage. Brak- ing, which is of the Palmer pneumatic type, operates differentially on the pedals when applied by a thumb- operated lever on the control column. The central pedestal is compact and includes three large trimmers, easy to hand and with clear dials for move- ment indication. The throttle box incorporates, in addition to the two throttle levers, flap and mixture con- trol, and an extension is provided downwards and backwards in the quadrant for movement of the throttle levers through and past the idling position for reversing pitch. A lock- ing bar hinges over the throttle box to prevent the throttles being opened vhen the controls are locked. This
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