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Aviation History
1955
1955 - 0783.PDF
SHORT LINES LENGTHEN: On the left, at the Queen's Island works of Short Bros, and Harland, Ltd., are Seamew A.S.I anti-submarine aircraft, and on the right, at the same works, are wings for the first of fifteen Bristol Britannias for which the company has contracted. Mott (technical director of Hunting Aerosurveys), while the flyingoperations will be controlled by Mr. J. H. Saffery, D.S.O., the company's flying manager. The ship is scheduled to leave London in late October, andthe aircraft will leave Canada in November; the expedition will return in April next year. A New Gipsy TLLUSTRATED on p. 791 is the de Havilland Gipsy Major 200,•*• the latest in what is surely the longest line of four-cylinder, air-cooled aero engines in the world. Intended for both fixed- androtary-wing aircraft, the Series 200 takes the Major's power into the 200 h.p. range, and incorporates advanced features whichhave been proved in service in the later Gipsy Queen engines. The Major 200 is a normally aspirated engine, using the samedesign of cylinder as the Queen 70 Mk 2; thus the swept volume, at 6.8 litres, is 700 c.c. more than that of previous Majors. Amajor development is the employment of direct fuel injection into the inlet ports, which, by virtue of its high aerodynamicefficiency and "near-perfect" mixture distribution, combines with an increased compression ratio to give significantly better powerand economy. Icing troubles are also eliminated. Provision is made on the rear wheel-case for a full range of accessories. Aversion of the Major 200 is also being prepared to run, at slightly lower power, on 80-octane M.T. spirit. Development is already at a very advanced stage, and a con-siderable amount of running has been completed both on test beds and in the Saro Skeeter 6 helicopter. Cross-Channel Co-operation IT is now a year since F. G. Miles, Ltd., of Shoreham Airport,Sussex, became British and Commonwealth representatives for the Societe des Avions Hurel-Dubois. The technical and com-mercial collaboration between the two firms has now been cemented by the signing of an agreement to form a joint companyto be known as H-D and M. (Aviation), Ltd. In addition to acting as sole sales agents in the U.K. and Commonwealth (excludingCanada and India) for the H.D.32 and its derivatives, the new company will explore the application of Hurel-Dubois principles ANGLO-FRENCH: Described in a paragraph above, the HDM.105 will permit of a direct comparison between high-aspect-ratio and "con- ventional" aircraft. to existing aircraft and will generally exploit to the full the high-aspect-ratio formula. As already announced in Flight, the first project to be under-taken is the development of the HDM.105, basically a Miles Aerovan with a metal wing of Hurel-Dubois pattern. Apart fromthis wing, and the associated wide-track undercarriage, the HDM.105 will be a standard Aerovan with Cirrus Major IIIengines. The increase in performance, compared with the exist- ing Aerovan, should be marked, as the following data show.Hurel-Dubois will show a wind-tunnel model of the HDM.105 at the Paris Salon. Miles are beginning to build an HDM.105at Shoreham. The 75ft wing will have a single spar at 35 per cent of the 4ft 9in chord, double-slotted slats and, possibly,spoilers. The areas of the outboard fins will be doubled. The calculated performance of the HDM.105 is as follows(Acrovan figures in parentheses): — Wing area, 388 sq ft (389); aspect ratio, 21 (5.6); empty weight,3,219 lb (3,100); max. a.u.w., 6,170 lb (5,800); payload with 50 gal fuel, 2,374 1b (2,123); min. ground run at max. wt., 175 yd (285); to50ft, 417 yd (625); full-power climb, s-1, 650ft/min (455); at 5,000ft, 500ft/min (240); single-engine at 5,000ft, 65ft/min (-270);ceiling to 118ft/min climb, 18,350ft (7,900); one engine, 2,625ft (nega- tive); level speed at s-1, 133 m.p.h. (120); at 5,000£t, 130 m.p.h. (112);2,200 r.p.m., 119 (109) m.p.h. at s-1, 121 (106) m.p.h. at 5,000ft. Bristol Races ""THIRD round of this year's series of National Air Races meet-*• ings will take place at Bristol Airport, Whitchurch, tomorrow (Saturday, June 11th). The programme will begin at 2 p.m., witha demonstration by Sea Venoms, followed by the first of the class races—that for the Air League Challenge Cup (Proctors) at 2.18. The subsequent race programme will be interspersed withdisplay items and with scheduled airline arrivals and departures. Among the demonstrations will be those by helicopters fromBristols and Westlands, R.A.F. Vampires and a Provost, a sail- plane from the Bristol Gliding Club, and a Tiger Moth of theBristol and Wessex Aero Club. The flying programme is scheduled to end at about 6 p.m. The lap distance of the four-legged race circuit is 6 miles; threelaps will form the course for the Norton-Griffiths and Grosvenor Cup races, and four laps for the Air League, S.B.A.C., Goodyearand Kemsley Trophy races. Practice flying around the course wili take place during the afternoon and evening of June 10th,five practice laps by each competitor being required. Admission to the public enclosure will be 2s (children Is) andto the private enclosure 10s; the car parking fee is 2s 6d. Special buses will run to the Airport from the Tramway Centre, Bristol,and the Old Market, Bristol. Entries for the six races are as follows: — S.B.A.C. Cup Class.—G. Marler (Falcon Six), R. R. Paine (HawkSpeed Six), Mew Gull entered by F. Dunkerley, F. Dunkerley (Sparrowjet).Goodyear Trophy Class.—P. Blamire (Gemini la), F. Dunkerley (Gemini la), J. N. Somers (Gemini 2).Air League Cup Class.—A. S. K. Paine (Proctor 1), E. Noel Husbands (Proctor 1), T. G. Knox (Proctor 3), E. Barker (Proctor 3).Kemsley Trophy Class.—A. J. Spiller (Messenger 2a), D. F. Ogilvy (Comper Swift), J. R. Johnston (Hawk Trainer 3), C. G. Wheatley(Globe Swift), J. N. Somers (Chipmunk), Capt. D. W. Phillips (Hawk Maior).Norton-Griffiths Trophy Class (For Tiger Moths).—B. Mafle, P. Vanncck, J. H. Denver, J. M. Donald, B. J. Snook, F. G. WadePalmer, L. P. Griffith (1st reserve), H. Armitage (2nd reserve), J. A. Greenhead (3rd reserve).Grosvenor Cup Class.—Miss F. M. Leaf (Tipsy Trainer 1), C. Gregory (Taylorcraft plus D), D. Westoby (Aiglet J.5K), J. E. Apple-yard (Chilton D.W.la), C. Cruikshank (Taylorcraft plus D).
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