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Handley Page HP.128 short-range transonic airliner

robunos

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H.P. 128 from putnam's Handley Page, pp. 562-563

H.P. 128 short range airliner :-

cruising speed M1.15 with no sonic boom.
stage length 500nm.
pax capacity - 125 @ 30" pitch.
maximum auw 117,700 lb, payload 25,000 lb
span 67.5 ft
area 1,300 sq ft.
sweepback 45 degrees.
aspect ratio 3.5
t/c ratio 6%
section NACA 65 or RAF100 series.
engines - 3 turbojets each of 15,000 lb s.t. [1.45 X enlarged RR speys]
structure - aluminium.
high lift devices - leading edge flaps with suction when deflected, blown trailing edge flaps.

the aircraft was expected to achieve a 20% saving in block time, for a 15% increase in direct operating cost over convention airliners over the design 500 mile stage length.
studies continued until 1964.

cheers,
Robin.
 

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fightingirish

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A slightly better 3-view drawing of the Handley Page HP.128, published in the German magazine Flug-Revue, January 1963
Please notice the seating arrangement and the arrangement of the "3 rear-mounted engines (of unspecified type) aspirated via two bifurcated intakes"(1).
(1) Source: hesham's post #1, FLIGHT International, 6 September 1962, page 401
 

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