Air Wonder Stories, July 1929 — page 96: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

94, Become a Trained Radio-Technician for “Registered” Radio Experta Opportunity beckons ss never ber fore in the Radio industry. Good+ Paying positions, interesting work, a chance to become independent— radio offers all this and more to ambitious mon who acize the op- portunity NOW! Last year the radio industry took all our gradu atea and clamored for more, aus sands of trained men are needed for Radio Service, Radio Enyineer- ing, Radio Broadcasting, Tele- vision, Station-operation, and Radio Merchandising, And still radio is in its infancy, Great expansion is - ahead, Get in this wonderful fast- fo rate growing field NOW! Radio Trades Association Approve S. of E. Radio Graduates The Wisconsin Radio Trades Ass’n now ne ecyery midio service mon to pass severe examina are and become registered, Dealers are tired of expensive incompetent help. ads ale ase fations the country over are planning to follow Wisconsin's example. 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EARN WHILE YOU LEARN Not only do we help place our men after gradua- tion, but we can arrange for parc-time employ- ment that will cover part if not oll of your Living expenses while tou are taking the Radio Course at the School of Engineering. Send for FREE BOOK Send today, without obligation, for FREE catalog describing. the wonderful. opportunities in radio, the three monthe Radio Course and details of our Earn While You Learn Plan. “CHODLf ENGINEERING a okeMilwvaukee. = — 5 15 A.W.S. 729-A Milwaukee, Wie Tr onnaed 2005, ALW.S. 720-8, Milwaukee School of Engineering of Mibyaukee, a Dept, A.W.S. 729-A, Milwaukes, Wise. a Wirhout obligation, please send me FREE Book @ describing your 3-months “‘Radiotrician’’ course a and full details of your ‘Earn Whfle You Learn 1 Plon,* : Agerseess i u a 4 Micuant Ent, Pres. Michael Ext, Inc., and Press Wet ea Radio Trade Asxoc,_and First V. Pres. Federated Rae armen e eres ene renee eae Name Address c.csccopcctccsnnvutsvsettnesbabate em ee es eo AIR WONDER STORIES like, Also {2 it {s too much trouble for you, could you tell me on what principle the Helicopter works. I have seen n lot ubout them too In the papers and would lite to know if they are really on the principle of birds. I would appreciate very much @ hearing from you about these questions and also some newa gbout your new magagine. MILTON YOST, Baltimore, Md. (The first Issue of AIR WONDER STOR- IS is now open to scrutiny. Wea hope Mr, Yost Like {t. In answer to the motive power of the glider: The glider Is genernily shot off the ground from a catnpult which svorks on the principle of a sling-shot. They are really without motors and depend on up- ward currents-of alr to keep them aloft ones they are in the air. The helicopter aims by having rotating winga to get power to lift it vertically from the ground and-allow it to descend the same way,—BKditor). | AVIATION NEWS OPERATION (Cont.) New Cooling Fluid For Airplanes NEW cooling fiuid for water-cooled air- plane engines has been developed by the Army Afr Corps whlch they -declare will revolutionise the operation of all alr- crnft which uses ft. Composed of a number of chemicals those naturo the War De- partment has not divulged, the flutd Is said to be yastly more efficlont than water. Only 4% gallons of {t sre required to do. the work of 18 gallons of water. This means a suving in welght of 84 pounds, The re- duction In the amount of fluld-allows a oor- responding reduction in the slze of radiator required, which means 4 further saying of 40 pounds. Furthermore the reduction in the size of the radiator means a reduction in its realstanoe, and asthe resistance of the radiator Is often £00, of the totsl re- sistance of the craft, the saving Is apparent. Having a much higher bolling point than weter the fuld will also permit operation of the craft over a much greeter speed for a longer time. With a saying in welght of 100 pounds and a greater range In operaHon of planes the tiuld Is expected to do wonders to ndyvance the cause of uvintion. Some inkling of the nature of the fluid ta ex- pected to be divulged by the War Depart- ment shortly, ee New Aviation Light-Beam eRe use of a rotating beam of Hght, half ted and half white, to guide aviators to the landing field Is now In use In the Cleve- land Municlpul Alrport says Science. By thia rotation, the beim will be seen by the avia- for no matter from what angle he ap- proaches the field, The use of the muitl- colored beam will enable him to dla- tinguish it. Auxiliary Plane to Aid Take-Off HH problem of the "take-off," especially of heavily loaded planes, which hss dogged the aircraft industry from the start, is sald to be solved by an-Invention of Dr, Henry Junjters, famous German expert. He makes use of an auxiliary plane to get the heavily londed one Into the air, when it can then operate under its own power, The plane to be started is placed on o platform built on the auxiliary, The motors of both planea are started and thelr combined power Hf{tn them both into the alr, where ot a pre- determined altitude they part company. The use of blocking keeps the planes ta- gether untll they are ready to separata, Tail Spin Causes Most Crashes Blab the tall spin 1s the principal cause of ulr catastrophes and has accounted for More fatalities In the Navy end Marine Corps than any other cause, was divulged by Secretary of the Navy Adams. During the last five years, he sald, tell spins ao- counted for one-third of the 150° fatalities that occurred in the aviation of the- Navy and Marine Corps, In ord¢r to use a pre- ventative for the tail spln whieh occurs principally at the time of a stall, the Navy Department Is expertmenting with the Handley-Pnge slotted wing which is satd to have so muoh success in Hngland. Other efforts toward safety include the use of the parachute, the development of more efficient rerological service, more frequent flght in- spection reports, and better tralning, Airplane Tracks Rum-Runner HE use of alrplanss to bring rum from Canada into the United States has been well \cnown, Now the ocnstoms authorities of Canada reversed the procedure by using a plane to track down a rum runner, Word Was recelyed at Quebso that a runner was making a landing at Shelter Bay on the south shore of the St. Lawrence, Unable Lo abtiiin & boat to make the trip, the cus- toms men chartered a plans and flew there. Although the rum barge had already de- parted, the customs men found the Hquor and selzed it, Then by the ald of the signal service the movements of the barge were traced and It was finally apprehended. Air Becoming Safe, Says Lindbergh ae perils of the alr are beooming a thing of the past satd Col, Lindbergh before’ a Congressional committee. Sufe air trungportation batween this -country and South America will become eg reallty in a year or two, he declared, with planes flying directly between Washington or New York to Rio de Janeiro and Buenos Aires. Planes will soon be able to land without seeing the gtound, by the ald of {intersecting radio beacons and the uxe of sonic alttmaters, Other devices, he belfaves, will overcame the difficulties of smoke or fog. He advooates the building of an airport in Washington, that should be a mile square, with a speoiai conorate runway, repalr shops and a Passenger terminal, He stressed particularly the ne- cessity of hard surfaces bt landing. fields, being reminded of his own experience of belng stuck in the mud at Bolling Fleld in Washington. He belleved also that the heli- copter is a thing for the distant future, there being no present way to develop one economioally. Safety Slot Keeps Planes Stabilized if [aa Innbility of pilots to keep their planes on an sven keel when the engine stalled has resulted in the loss of many Lives, The reault waa the using of a safety. slot which enabled the machine to maintain its posi- tion even tho {t moved at almost a snail's pace. But tho this was a safety devior for inexperienced pllots, it took the plane somewhnt out of the control of the pilot: and for war purposes constituted a serious hondlcap, Now by a new device of the Handley Page Company of England an. {nret- ceptor hus been pinced on the plane whith glyes the control back to the pilot, Tha British Government hes paid the Handley Page Company $500,000 for the use of- the Interceptor slot, indicating that they are apparently satisfled with It, Plane Used to Explore Gsnadian Wilderness PARTY of exploration has been started, to cover 7000 miles of the Hudson Bay region of Canada, on a trip after the modern fashion. Penetrating a land which has been closed to man except for a faw months of the year, the explorers wlll search for precious metals, water-power sitea, and will muake: various other geologic surveys, An incentive to the search has been furnlahed by the digcoveriés of gold in this reglon, by men worlcing on the old Hudson Bay Rall- road, Two planes will be used in the sur- vey, provided by radio communication with each other and with their base. By the uaé of skcis Instead of landing wheels the planes will-be enabled to land on the snow or on inkea or rivers. AVIATORS “Caterpillar Club” Now Has 120 Members Hm present membership of the Caterpillar Club, composed of uviators who found it Tecessary to jump from thelr plane by pitra- chute to save thelr lives, now numbers 120 men, This wos divulged by Capt. Falk Harmel, of the Army Air Corps Reserve who {is unofiictal historian of the Club, Col Lindbergh, by virtue of four such divas from is plane, has earned the title of “Noble Caliph, Grand Visier and High Mogul.” Among the members’ lx one who jumped rt an altitude of 7,600 feet, and another who at 34000 feet became unconsclous find re- covered when the plane was only 9,000 feet from the ground. Moving earthward at a terriflo velocity he was forced to jump-when only 900 feet from the ground when fire ooourred in the englne cockpit, comu°cbooks,.conn