Air Wonder Stories, May 1930 — page 85: what you’re looking at

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

* hd AVIATION NEWS (Continued from page 1042) zon, by the reflection-of the sun or moon while in dense fog or clouds, or by proper instru- mental equipment,.. They prove also that mus- outa balsuce is faulty without the assistance of sight. Zeppelin Polar Trip Cancelled epee lar flight of the Graf Zeppelin, which had-been scheduled “for the spring, has. been cnncelled, “becnuse- néither. the Zeppelin works nor the Acro-Arctic Socicty has thus far been able to procure acceptable terms for insuring the dirigible on its-proposed polar flight, As a result, the Zeppelin. works will now direct its attention. to other commercial projects; chief among them being a South American Aight next Spring. - Airplane Safety Requires Less Dependence on Pilot RATHER than Sepect airplane pilots to be supermen, who will always fanction: at one- huni per cent efficiency-in an. emergency, depigners of airplanes: must try to improve: the construction of their machines to the point where they, willbe easier to land, will not have a tendency ‘to spin, and have satisfactory “con~ tro gee uch are the conclusions reached by the National: Advisory. Committee for Acro- naoutics in its annual report recently made to Congress. The Department. of Commerce made an analysis of air-accidents in 1928, and -came to the conclusion that-in nearly half of the mishaps, the pilot was to blame. Had his judgment been better, or had he not become confused by some untoward set of circumstances, had his “reao- tion” been better and quicker, the situation would have been met adequately, While this is all true enough, and while medical- supervision of pilots, always strict, is likely to become even mote stringent, nevertheless, flying should. be made safer through the elimination front air- Planes of certain undesirable acrodynamic char- acteristics, Engineers Find Best Night Landing Surfaces A N.avintor coming to earth through a dark _ Sky can see-a landing. field covered whitewashed crushed stone 15 times’ as well as he can gee one paved with asphalt, say the aviation lighting engineers of the General: Elec- tric Co, To light fields equally well, 15 times as much Jight is. required for the asphalt as for the rock. Many surfaces have been tested and given a reflection factor. The stone reflects 75% of the light-it receives andthe asphalt reflects 5%. For Portland cement the fi is 30%; for crnshed stone, 25; crushed. ‘slag, - gravel and -clay soil, 20; sandy soil, 10 to 12; pinaees: 5 to 10; blinck soil, 5 to 8; and asphalt, Italian Aviator Sets Two World: Records (BE Ttalian ace, Renato Donati, in the flying Fiat AS 1 which hasan’ 85-H.P. Fiat engine, recently broke two world’s records, These are the records for distance and duration for tourist machines-over a closed circuit. ‘The ace ‘cruised between Ladispolis Ostin and Anzio. The flight lasted 29 hours, 3 minutes and 9 seconds, covered 9 distance estimated at 2800 kilometers. This- record beats the previous. mark by. sbout 1200 kilometers, The flyer carried a passenger in his machine, Chemical Cooling Test Pleases Army Air Corps ECENTLY the first Army pursnit. plane IN “built to incorporate a. high-temperature liquid Soong feature was flown. some distance in.a test, With high-temperature cooling liquid, water ia entirely eHminated as tne cooling medium; ethylene glycol ig the: substitute fluid circulated through the cooling m, A chem- chl containing approximately 3% of water, ‘this compotnd- has a boiling point of 335 degrees Fahrenheit, fis against 212. degrees for water, and-an thitial’ freezing point of zero degrees, The pais is inthe form of a slush between 100 and 4 pecnrees Fahrenheit, and does not freeze solid nti the iatter temperature 13 reached, The saving in weight effected’ by the change to this cooling Hquid is so great that the perform- ance of airplanes equippedwith it promises to be decidedly superior, This fa because the amount of ethylene required for cooling is less than an adequate amount of water, and ag a result the radiator is considerably- reduced in size, ‘The (Contintied on page 1044) AIR WONDER STORIES 1043 ~~ Write for these MY PATENT = E BOO LAW OFFICES OPPOSITE € U.S- PATENT OFFICE ho loft is n view of ie drafi ‘and. specl- fication oO! wher s ot & i pared in my: offices. 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