FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1921
1921 - 0746.PDF
Audibility of Oppau Explosion THE Air Ministry announces that, as a result of the assistance afforded by the Press, letters have been received at the Meteorological Office from 48 persons who heard on Wednesday, September 21st, sounds that they thought might be connected with the Oppau explosion. The explosion took place at 7.32 a.m. by British summer time. From the known rate of propagation of sound it is easy to show that the sound could not have been heard in England till between 8 and 8.30 a.m. Only four correspondents refer definitely to this time, and there is little to indicate at present that the noises they mention differed in character from others which could not have been due to the explosion. In fact, the question whether the explosion was heard at all in this country remains an open one. The Director of the Meteorological Office wishes to express his thanks to all who have assisted in this enquiry. The Fleet and Air Observers UPON similar lines to the specialist branches for gunnery, torpedo, navigation and signals, the Admiralty have decided to make a specialist branch of the Air Observers among naval officers. For the present, eight officers will be selected each half-year. In time, only junior lieutenants of two years and upwards will be selected, as in other specialist branches, but a few commanders and lieutenant-commanders are required immediately for training. Courses, each of seven months' duration, will begin in May and November in each year, and will include two months' preliminary training at the naval schools in gunnery and signals, and five months at the seaplane training school at Lee-on-Solent. While under training with the R.A.F. officers will receive the full pay of their naval rank, with extra remuneration, for each actual day of ascent, of 3s. in the case of commis- sioned and subordinate officers, and is. 6d. in the case of warrant officers. After qualifying they will be eligible for appointment as observers in aircraft carriers in the Royal Navy, and while actually detailed as trained observers will receive allowances of 4s. and 2s. a day respectively. If qualified in wireless telegraphy, these allowances will be increased to 6s. and 3s, a day. Officers will retain their naval rank and wear naval uniform while under training. On completing the qualifying course they will be rated probationary observers and appointed to fleet carriers for further training. On completing six months, including a course at Leuchars, Fife, they will be eligible for confirmation on the recommendation of the Commander-in-Chief of the Atlantic Fleet. Avro-Sun beams in Australia PARTICULARS are to hand by a recent mail of some performances of Avro commercial biplanes fitted with Sun- beam-Coatalen " Dyak " 100 h.p. engines, which are being produced in considerable quantities in Australia. Up to the time of writing, one machine has carried no less than 283 passengers in 111 flying hours, covering in that time a distance of over 7,400 miles, without mishap A similar biplane, the property of" Mr. P. Hogarth, Clio, Queensland, made a trip of 1,845 miles in 20 hours' flying time, the average speed being 92.5 m.p.h. The engine gave no trouble throughout the whole of the trip, and the pilot never had a moment's anxiety. This flight was over very sparsely inhabited country, which would, in many parts, be practically impassable by motor-cars, and the value of such expeditious means of transport in such a country can scarcely be over-estimated. The owner of the machine in question, Mr. Hogarth, expresses himself that the aeroplane is the one and only practical means of transport for his district. Cairo-Baghdad Air Mails THE Postmaster-General announces that the air mails for Iraq (Mesopotamia) which were dispatched from London on October 13 and 20 reached Baghdad by air from Cairo on October 30. In future, dispatches for onward transmission by the fort- nightly Cairo-Baghdad air service will be made from London fortnightly on Thursday evenings, instead of weekly as heretofore. Correspondence included in them for Bushire and for all places in Persia north and west of it, as well as for Iraq, should gain from at least 3 days (Bushire) up to 14 or more days (Baghdad, Isfahan, etc.) in time of transmission. A special air fee of is. per ounce is charged in addition to ordinary imperial postage. Each packet should bear in the top left-hand corner the " Air Mail " label obtainable at any head or branch post office, and be clearly marked immediately below it " Cairo-Baghdad." Parcels and insured packets are not admitted. The next Cairo-Baghdad Air Mail will be despatched fromLondon on Thursday evening, November 17. NOVEMBER 10, 1921 PUBLICATIONS RECEIVED Technical Note No. 65. Langley Field Wind Tunnel Apparatus. By D. L. Bacon. National Advisory Committee for Aero- nautics, Navy Building, Washington, D.C., U.S.A. Technical Note No. 72. Aneroid Investigations in Germany. Abstract of paper entitled " Uber Aneroide " by E. Warburg and JiV. Heuse. National Advisory Committee for Aero- nautics, Navy Building, Washington, D.C., U.S.A. Report No. 122. Preliminary Experiments to Determine Scale and Slip Stream Effects on a 1124 size Model of a JN4H Biplane. National Advisory Committee for Aeronautics, Navy Building, Washington, D.C., U.S.A. CatalogueNapier Aero Engine. D. Napier and Son, Ltd., 14, New Burlington Street, London, VSJ. 1.m m m m AERONAUTICAL PATENT SPECIFICATIONS Abbreviations ; cyl. = cylinder ; I.C. = internal combustion 1 m. = motors The numbers in brackets are those under which the Specifications will be printed and abridged, etc APPLIED FOR IN 1920.Published November 3, 1921 2*,488. AGO FLUGZEUGWERKE GES. Aeroplane wing structures. (148,517.)20,489. AGO FLUGZEUGWEHKE GES. Lever steering for aeroplanes. (148,518.) 20,491. AGO FLUGZEUCWERKE GES. Fighting aeroplanes, (148,530.)21,450. T. H. HILL. Wireless directional apparatus. (169,849.) Published November 20, 1921.9,665. F. GRUEBLER. Operation of I.C. engines at various altitudes. (141,349)18,162. V. ENTLEK. Aeroplanes. (145,780.) 18,484. R. P. PESCARA. Flying-machine propellers. (146,435.)18,703. R. P. PESCARA. Helicopter screw propellers. (146,835.) 19,133. P. ST. G. KIRKE AND BRISTOL AEROPLANE CO., LTD. Water-tubeboilers, etc. (170,069.) 19,293. WERKSTATTEN FUR PRACISIONS-MECHANIK UND OPTIK C. BAMBERG.Aerial navigation apparatus. (147,215.) s 19,595. H. L. COLE. Radiators. (170,077.)20,193. DEUTSCHE FLUGZEUG-WERKE GES. Wooden steering-rudders. (149,666.)20,254. C. LORENZEN. Turbo-compressors for use with aircraft engines. (148,338.)40,305. AGO FLUGZEUGWERKE GES. and G. LETSCH. Triplane. (148,3770 20,428. G. BERRY. Rotary I.C. engines. (148,470.)20,548. M. HEINECKE (ne'e THYRAUER). Parachutes. (148,553) 21,048. LUFTFAHRZEUGBAU SCBUTTE-LANZ. Gas balloon valves. (I53.311)-21,050. LOFTFAHRZEUGBAUSCHUTTE-LANZ. Framering for airships. (153,312.) 22,304. T. SLINGER. Flying machines. (170,137.) APPLIED FOR IN 1921. Published November 3, 19218,728. E. S. ULLMANK. Airship mooring apparatus. (169,938.) Published November 10, 1921.3,696. V. A. ALMONACID. Aeroplane wings. (170,234.) If you require anything pertaining to aviation, study "FLIGHT'S" Buyers' Guide and Trade Directory, which appears in our advertisement pages each week (see pages xv and xvi). NOTICE TO ADVERTISERS All Advertisement Copy and Blocks must be delivered at the Offices of ''FLIGHT," 36, Great Queen Street, Kingsway, W.C. 2, not later than 12 o'clock on Saturday in each week for the following week's issue. FLIGHT The Aircraft Engineer and Airships 36, GREAT QUEEN STREET, KINGSWAY, W.C. 2. Telegraphic address: Truditur, Westcent, London. Telephone: Gerrard 1828. SUBSCRIPTION RATES " FLIGHT " will be forwarded, post free, at the following rates tâ ABROAD* s. d. 3 Months, Post Free.... 8 3 6 â 16 6 12 â , 33 ° UNITED KINGDOM s. d. 3 Months, Post Pree.... 7 7 6 â 15 2 12 , 30 4 These rates are subject to any alteration found necessary under abnormal conditions and to increases in postage rates. * European subscriptions must be remitted in British currency Cheques and Post Office Orders should be made payable to the Proprietors of " FLIGHT," 36, Great Queen Street, Kingsway, W.C. 2, and crossed London County and Westminster Bank, otherwise no responsibility will be accepted. Should any difficulty be experienced in procuring " FLIGHT " from local newsvendors, intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance «s above. 746
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
