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Aviation History
1950
1950 - 0593.PDF
23 MARCH 1950 FLIGHT On the 'Blackburn' Universal Freighter This important aircraft, to Air Ministry Specification C3 45, incorporates some very interesting Lockheed equipment. The fixed tricycle undercarriage is of Lockheed design and manufacture and the main struts are designed for an all-up weight of 95,000 Ib, with a vertical rate of descent of 12 f.p.s., and are each 13' 8' in length. The self-centering nose wheels are Lockheed hydraulically power steered, controlled from duplicate foot pedals: while power for the flying control units is provided by the normal Lockheed system, which incorporates two Lockheed Mk' VI Hydraulic pumps. An important feature of this aircraft is in the manually powered Lockheed hydraulic system for operating the loading ramp and its fairing doors. These doors are sequenced with the ramp to open before, and close after, the ramp operation and locking are completed. The ramp jacks are of such a construction that variations of oleo compression, due to varying loads, still allow the ramp to maintain contact with the ground, the jacks eventually becoming hydraulic struts capable of supporting a load of 45,000 Ib. The ramp, therefore, becomes a fourth reaction point additional to the three legs. f • :•" ' HeSO. riwoe "»<« AUTOMOTIVE PRODUCTS COMPANY LTD., LEAMINGTON SPA
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