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Aviation History
1927
1927 - 0020.PDF
JANUARY 13, 1927 The ailerons of the Vojenska S. 16 are operated by a somewhat unusual arrangement of cranks. and is covered with rubber as a protection against bullets. A service tank with a capacity of 174 kgs. (383 lbs.) is placed in the centre of the top plane, giving a total petrol capacity of 574 kgs. (1,263 lbs.), which is sufficient for a flight of 5£ hours at full power. The wing construction, as already mentioned, is based upon the use of Duralumin. The main spars—which, incidentally, are identical in both wings and front and rear spars alike—arc of plain box type, not the drawn rectangular type of Duralumin spar which was so popular with French designers some years ago, but a built-up box. The wing construction is fairly clearly shown in some of our sketches, which also illustrate the spar details. It seems doubtful whether this form of spar is very economical from the point of view of strength for weight, although doubtless it is a fairly cheap manufacturing proposition. The length of unsupported spars is considerable in the S.16, and the angle of the wing bracing wires is rather small, so that one would expect compression loads to be not inconsiderable. The wing ribs, also of Duralumin, are of trough section, the edges facing outward. The manner of attaching them to the spars is illustrated in our sketches. The actual wing portion sketched is the starboard lower plane wing root, which runs from the fuselage to the attachment of the diagonal struts supporting the undercarriage. All the main fittings, it should be pointed out, are of steel, such as the long straps shown in the sketch, the lugs for attaching the spars to fuselage and outer spars, the spar end boxes, etc. In the ribs illustrated the upper and lower flanges are braced by vertical distance pieces only, but in the main ribs these, although fundamentally of the same type, arc arranged in the form of a Warren girder so as to provide triangulation. One would imagine that in spite of standardisation of a great number of small parts the method of supporting the ribs from the spars would be somewhat expensive. Compared with certain French and other forms of metal construction, that employed by the Vojenska firm appears fairly simple and cheap, and it is believed that the particular type (if construction has given good results in actual service. The main point is that Czechoslovakia has definitely entered the field of metal construction on original lines, and doubtless the future will see considerable progress in this direction. The main data relating to the Vojenska S.16 have already been published in FLIGHT, and also in the table of particulars given in the last issue of THE AIRCRAFT ENGINEER. It will, therefore, suffice if we recall here that the machine has a top speed of 225 km./h. (140 m.p.h.), a service ceiling of 6,500-7,000 m. (21,300-22,900 ft.), and that the duration is 5-5 hours at full throttle, corresponding to a radius of 1,237 km. (770 miles). The weight empty is 1,200 kgs. (2.640 lbs.), and the total loaded weight 2,250"kgs. (4,950 lbs.). El H LIGHT 'PLANE CLUB DOINGS London Aeroplane ClubTHE total flying time for the week ending January 9, 1927, was 23 hrs. 10 mins. Unfortunately, one of the solo " Moths '' was out of action duringthe week-end, and many soloists were disappointed. The following members had flying instruction :—C. G. Miesegaes, E. D.Moss, J. H. Saffery, G. H. Saxon'Mills, E. f. B. King, L. R. Winter. G. M. Randall, R. Malcolm, A. J. Richardson. H. B. Maddocks. H. Solomon,Lieut.-Comdr. Mackintosh, E. R. Wilson, M. P. Susman, F. C. Elford. J. 1. Hofer, H. O. Gugenheim, T. W. G. Eady, D. H. P. Esler, Miss Fletcher,H. M. Samuelson, F. Clarkson. The following members flew solo :—O. J. Tapper, Lieut.-Comdr. Mackin-tosh, H. Spooner, C. E. Murrell, S. O. Bradshaw, R. Malcolm. The following members had joy ride? :—Miss Mackintosh, D. A. Wilson,E. G. Denton. The Club has acquired G-EBKT to replace G-EBNP, crashed in Novemberlast, and delivery will be taken this week. The Hampshire Aeroplane ClubREPORT for week ending January 7, 1927 Total flying time, 8 hrs. 1" mins. Instruction flying, 3 hrs. 10 mins. ;passenger flying, 1 hr. 30 mins. ; solo flying, 3 hrs. 30 mins. The following members had instruction :—Stokes, 1 hr, ; Cooper, 40 mins. ;Shepherd, 20 inins. ; Southcliffe, 20 mins. ; Nicholson, 20 mins. ; Perfect, 10 mins. ; and Lieut. Graham, R.N., 20 mins.The joy-riders Were :—Mrs. Fry, 1 hr. ; Miss Fry, 20 mins. ; and Mr. Cadell, 10 mins. The soloists were :—Perfect, 1 hr. 30 mins. ; Fry, 1 hr. ; Cooper, 15 mins. ;Keeping, 15 niins. ; Rumble, 10 mins. ; Flying Officer Mellor, 10 mins. ; Nicholson, 5 mins. ; and Shepherd, 5 mins.Two soloists were launched, viz., Cooper and Shepherd, and both put up an excellent show.It is worth recording that Cooper, who is in the employ of Messrs. A. Y. Roe & Co., Ltd., at Hamble, has received all his flying instruction duringlunch hours, and has never flown in Club machines at any other time, which shows what " a few minutes a day " will do. On Tuesday, Messrs. Fry and Perfect passed the qualifying tests for their" A " licences. The Lancashire Aero Club RKTORT for week ending January 8, 1927.—Total flying time for theweek was 12 hrs. 25 mins., made up as follows :—Dual with Mr. Brown : Messrs. Slater, 30 mins, : Dickinson, 20 mins. ; Forshaw, 20 mins. ; Gatterall^20 mins. ; Newton, 20 mins. ; Keays. 20 mins. ; Anderson, 15 mins. ; Dobsori, 15 mins. ; Goodyear, 15 mins. ; Fallon, 15 mins. With Mr. Cantrill : Messrs. Leigh, 20 mins. ; Forshaw, 10 niius.Solo: Messrs. Birley, 1 hr. 10 niins. ; Michelson, 50 mins. ; Slater, 30 mim. Twemlow, 25 mins. : Leeming, 20 mins. ; Hardy, 15 mirs. ; Fallon. 10 mins.for tides : with Messrs. Cantrill, Leeming, Costa, or Lacayo :—Mrs. Birley, Miss Tweeny, Messrs. Adriao, Quinn, Hartley, Thorpe. Abdulla, Macbroom, Smith, Walters, Dickinson, Jones, Lacayo, and Bute.Tests occupied 50 minutes. The Midland Aero Club- Lid. for week ending December 25, 1926.—The total flying time was3 hrs. 45 mins. The following members made solo flights :—H. J. Willis, E. J. Brighton.R. L. Jackson, W. Snann, J. Brjnton, and A. M. Glover. Mr, E. J. Brighton made flights with passengers.Unfortunately Cant. McDonough iniured his arm while starting up his car, so that no dual instruction was possible.Report for week ending January 1, 1927.—The total flying time w."s 5 hrs. 15 mins. The following members made solo flights :—A. M. Glover, J. Brinton,G. V. Perry, W. Swann, R. L. Jackson. Mr. C. Fellowes was given dual instruction.The Austin Whippet was flown by A. M. Glover and G. Y. Perry. Report for week ending January 8.—The total flying time was 3 hrs.20 mins. The following members made solo flights :•—E. J. Brighton, H. J. Willis.Mr. Brighton made two flights with passengers. The following were given dual instruction :—H. J. Willis, G. Aldridge,C. Fellows. Test flights occupied 20 mins. Very poor visibility restricted flying. Royal Aero Club Monthly House Dinner THE next Monthly House Dinner of the Royal Aero Club will be held at 3, Clifford Street, London, W.I, on Wednesday, 19th inst., at 7.15 p.m. The subject of " Aviation " will be opened by Mr. C. R. Fairey. Members wishing to attend are requested to notify the club at the earliest possible moment. Capt. Barnwell's Paper WE wish to remind readers that Capt. F. S. Barnwell, O.B.E., A.F.C., is reading a paper entitled " Some Notes on Design of Airscrews" before the Inst. of Aeronautical Engineers on Jan. 25. Dr. H. C. Watts, D.Sc, etc., will preside, and the paper will be illustrated with lantern slides. Royal Air Force Memorial Fund THE Grants Sub-Committee met at Iddeslcigh House on January 6. Lieut.-Comdr. H. E. Perrin was in the chair, and the other members of the committee present were : Mrs. L. M. K. Pratt-Barlow, O.B.E. ; Sqdn.-Ldr. Douglas Iron, O.B.E. The Committee considered in all 16 cases, and made grants to the amount of /70 5s. 6d. Next meeting, Thursday, January 20, at 2.30 p.m. 20
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