Arizona republican., 1910-07-01
IA BIRDS FLIGHT
 IS COPIED HE SAYS
AN ENGLISH AVlATOR'S NEW IN
 VENTIo INFESTED.
Stability Maintained Automatically in Lieutenant Dunne's BipIane-Rus-
 sian Orders an Ocean Air Liner.

| | just been made by Lieutenant J. w. Dunne. an English aviator who has | been directing his efforts toward the | achievement of automatic stability in the air. Lieutenant Dunne believes he has attained his object. In his latest flight the machine flew for two miles entirely without control, and he de- clares that this flight, in which sta bility was maintained automatically, marks the introduction of the safety aeroplane.
 Lieutenant Dunne's theory is that as bird flies it makes no conscious ef- fort to preserve it's equilibrium. ad justing itself by instinct to changing wind conditions. An albatros it is said, can fly while asleep, and it is on the principles of albatross flight that Lieutenant Dunnc has been work ing.
 The shape of his biplane, which Is a fuil sized machine, is similar to that of the broad arrow. The planes slopes back jn V from the prov. Each plane is a rectangular strip with the surface Of part of d cone.
 This cOnical surface is the secret of the automatic stability" Lieutenant Dunne declared. "The effect is that the aeroplane simply balances itself in the air and maintains a constant speed at a constant angle. There is no necessity to balance the machine either sideways or forward; it neither pitches nor rolls.
 There are two wing flaps, one at ti e end of each plane. These are used solely for changing the course, acting as elevators and rudders"
 The flight took place in a wind of ten miles an hour. After moving the levers of the small wing flaps to make sure they were working properly. Lieu tenant Dunne then left the machine absolutely to take care of itself.
 It covered two miles in bee line. rising slightly. The aviator then de- cided to return, so he moved the levers of the steering flaps for a distance of two inches and held them in a fixed position. The biDlane then described very slowly part of a broad circle without skidding or sinking for about a thirI of a mile This proved. said Lieutenant Dunne, that if the steering flaps were fixed in position an aero plane possessing automatic stability would of its own accord describe con tinuous circles.
 British made airship to fly from London to New York in seventy-two hours seems at this stage a somewhat tall order. yet it's designer. the Russian Baron Roenne has already acquired within ten miles of London 100 acres of land on which to erect aerial sta tiOns and docks for the purpose of es tablishing an aerial passenger and mail service across the Atlantic. This ambitious project he proposes to real ize in twelve months
 The pioneer aerial liner is to be 1000 feet long and 65 feet in diameter. It will be worked by motors and Is pro pellers and will have a lifting capacity of thirty eight tons beyond its own weight. It is to be a rigid dirigibe.
 The baron will begin by trying a flight to Berlin and back, which he thinks will take thirty-six hours. al lowing for head winds up to fifty-five miles an hour. That accomplished, he will at once make a trip to New York.
 
 London to Paris, Vienna, Rome and St. Petersburg
 At the risk of the reprOach that he is counting his chickens before the eggs are matched the Baron has prepared the following calculation: Each vessel will carry 200 first class and 200 sec ond class passengers. At the prevail ing railroad fares of $2O and S15 re- spectively for single journey to Der lin this ought to produce a years revenue of $2.450.00O. Against this the expenditure is set down: Benzine and oil, 1000 tons. ... $125, ,000 Gas .......... ......-.-...-. lZ5,VOO Salaries. three captains and
 nine machfnists ............ 25.O0O Writing off and other expenses 175.000
 Total expenditure a vessel. S450, ,000 1
 This looks good, but even optimists | think much water will run under old | London bridge before the baron's aerial | lookout first sights the Statue of Lib | erty.
 The International Aeronautical con I gress. which is sitting just now at the ] of foreign affairs in Paris to i draw up code of air law soon got | into difficulties. The trouble is that | the most learned professors, the great est authorities on international law, are ! not at the same time authorities on 1 flying.
 Soon they were hopelessly at sea and | were obliged to call in such expert ] airmen as Bleriot and Paulhan when it came to settle the points of the right of way in the air Paulhan was ab- | sent flying in Verona, but BleriOt I, readily gave the congress the benefit l of his experience.
 He commenced by dfferentiating be- tween balloons, ,dirigibles and flying | machines. Balloons are rudderhess; l dirigibles are slow to answer the helm, 1 and by their size impede free out i look. Consequently. Bleriot thinks fly ing machines should always give away | to the more unwieldy balloons or Oth- | CT airships.
 Whether to the right or to the left | is in Bleriot's opinion immaterial; only | should under all circumstances be forbidden to pass immediately above | or below each other. At night all ma chimes and balloons should carry lights ! fore and aft.
 The congress had previously unanim- ously decided that all, airships should | Il. Il.