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Aviation History
1922
1922 - 0023.PDF
JANUARY 12, 1922 NOTICES TO AIRMEN France : Civil Landing Grounds, etc. * PREVIOUS Notices to Airmen relating to France are amplified and amended as follows :— 1. Le Bourget Aerodrome.—Ground Markings.—A system of ground markings designed to clearly define the bad landing area of the Le Bourget aerodrome in the vicinity of the Moree brook—the north boundary—has been brought into force, as an experimental measure, as from December 12, 1921. These markings are wooden structures, as illustrated in the sketch below, and are placed at intervals of 60 metres. Air- ittffeh ijni. *~: *<£ He ' |fe l^-J 4j. 4£ 4t craft approaching from north should clear the markings before landing, and will then be certain of alighting on suitable ground. 2. Civil Landing Grounds.—The following grounds are now available :—(i) Poix.—Emergency Landing Gound. Posi tion.—Lat. 4<5°49'N., Long. i°58'E. Situated 4^ kms. N.N.W. of Poix on the east side.of the road to Abbeville. Dimensions.—660 by 600 yards (approx.). No further details are at present available, (ii) St. Quentin.—Emergency Landing Ground. Position.—Lat. 49°5o'N., Long. 3°i2'E. Situated 7 kms. to the S.W. of St. Quentin. Dimensions.— 700 to 550 yards, but only the northern half of the ground is at present suitable for use by aircraft. No further details are available at present. 3. Valenciennes.—Telephone.—A telephone has been in stalled at this landing ground. Number—Valenciennes 30. 4. Previous Notices.—Para. 2 (1) c of Notice to Airmen No. 36 of 1921 is amplified by para. 3 of this Notice. (No. no of 1921.) Aerodromes for Civil Use ; Consolidated List IN new lists (A to D) now ready (No. 1 of 1922), aero dromes, seaplane stations and' landing grounds, open to civil aviation in the United Kingdom, and Service and Civil stations, available to civil aircraft in case of emergency only, are shown as corrected to 1st January, 1922. The lists are classified as before and in alphabetical order. Notices to Airmen Nos. 81, 96, 104 and 108 of the year 1921 are at the same time cancelled. (No. 1 of 1922.) Gosport Aerodrome ; Obstructions THE southern portion of Gosport aerodrome is being used as a sports ground, and goal posts have been erected on the ground. Pilots having to land on this aerodrome should use the northern portion. (No. 2 of 1922.) Transmission of Calibrated Waves from Air Ministry Wireless Station IT is notified that the Air Ministry Wireless Station, London, will, from the 10th of January, 1922, transmit a series of calibrated waves daily at the times shown in notice No. 3 of 1922. Lympne Aerodrome; Erection of an Anemometer Mast PILOTS of aircraft are warned that an anemometer mast is in course of erection at Lympne aerodrome. The mast will be erected in the S.W. corner of the aerodrome near the meteorological office, and will be marked by a black and white danger flag by day and a red obstruction fight at night. The top of the mast will be 78 ft. above the ground. (No. 4 of 1922.) a ± " Under the Searchlight " ONE of the most important books, " Under the Search light," by the Hon. Violet Douglas Pennant, to be published shortly, by Messrs. Allen and Unwin, should be of very con siderable interest. In this. Miss Pennant proposes to deal with the inner history, from first to last, of what was generally referred to, at the time, as " the great W.R.A.F. scandal." We understand that, with the exception of the mysterious " secret statement," furnished by Miss Philippa Strachey to Lady Rhondda, and by Lady Rhondda to Lord Weir (the nature of which was never divulged, and of which Miss Douglas Pennant, herself, is still entirely ignorant), the book Visual Signals for Aircraft ; Addition THE following signal is added to the Standard Table of Visual Signals for use of Aircraft issued in Notice to Airmen No. 2 of 1920. Signal. Ground or sea to air craft ; signification. Aircraft to sea or ground; signification. Aircraft on the water in distress and re quiring immediate assistance. A white flare Aircraft on the water from which, in distress and re- at intervals of quiring immediate about 3 sees., assistance. a white light is ejected into the air. (No. 5 of 1922.) NOTICE TO GROUND ENGINEERS Maintenance of A.V. 8 and A.V. 12 Type Magnetos THE following precautions should be observed with A.V. 8 and A.V. 12 type magnetos :— 1. Lubrication.—Before starting up an engine fitted with a magneto which has been drawn from store or has not been run for some time, care must be taken to ensure that the oil well of the distributor bearing, which is of the plain phosphor- bronze type with wick lubrication, is filled, by passing approximately a teaspoonful of oil down the left-hand hole in the oil cup at the distributor end of the magneto (facing the distributor). Six drops of oil should also be injected into each main bearing through its respective oil cup ; one or two drops to the contact breaker cam lubricating pad, and one to the contact breaker pivot pin. To effect the last, it is only necessary to move the retaining spring to one side. This provision of oil should nornally be sufficient for twelve hours' running. Thereafter, at similar intervals, twelve drops of oil should be given to the distributor gear wheel bearing, with treatment of the other bearing as stated above. 2. Contact Breaker.—The gap between the contact breaker points should be maintained within -013 in. and -oil in. A gap of *oi2 in. may be regarded as normal. The contact breaker points, which are slightly convex, should be cleaned, if necessary, with very fine emery cloth, care being taken to ensure that no emery dust is left on the contact breaker. A file should not be used for this purpose. A soft brush is convenient for cleaning the contact breaker. 3. Distributors.—In changing the magnetos on an engine, it is essential that the original distributor block should be removed, and the new magneto attached complete with its own distributor. The changing of a distributor block from one magneto to another is most undesirable, owing to the possibility of the rotor brush fouling the distributor segments, due to the small gap between these parts and to the working tolerances necessary on distributor, end plate, gear centres, etc. The setting of the spark gap between the rotor main electrode and the distributor segments must be correctly maintained within the limits of -oio in. and "015 in. Normally it should be unnecessary to interfere with this gap, which is correctly set for each individual magneto before its despatch from the maker's works. The gap between the rotor starting electrode and the distributor segments should be between -020 in. and "030 in. 4. Hand Starter Terminal.—Care must be taken, when fitting the starter lead to the distributor, that the terminal screw is properly locked by the spring strip provided for the purpose. The screw should be tightened by a box spanner which at the same time will press down the spring clear of the hexagon ; on release, the spring should lock the screw, the latter being turned slightly, if necessary, to ensure this. No part of the screw or the locking spring must project beyond the face of the distributor. (No. 1 of 1922.) a a will reveal to the public the fullest details concerning this complex case. The Next Aero Club de France President FOLLOWING the death of M. Michelin, several names are rumoured to fill the vacant chair of honour. M. Flandin, one-time Secretary of State for Aeronautics, is a first favourite, with several runners-up, but there are those who would like to see M. Bazil Zaharoff take up the work. There is one thing certain ; the more money that attaches to those backing-up official French aviation, the better are the pros pects incidentally for the progress of the great science and industry, internationally and otherwise.
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