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Show EXPERTS IN ENGLAND LOOKING TO AIRSHIPS Pointed Out That Commercial "Usefulness "Useful-ness Will Be Muqh Greater Titan That of Airplanes. LONDON', -Mav 10. (By the Associated Press'.) British 'experts, secktns to forecast fore-cast the future potentialities of aircraft. eein to aeree that it is to the airship of rlsid construction, not to the airplane, that one must look for tiie maximum of commercial com-mercial usefulness. The limitations of airplanes designed on present principles are definitely knows. Technically, It is an accepted fact that an airplane cannot be produced which is capable of transporting a commercially adequate load for a longer nonstop flicht than bll'O miles. For practical purposes ,r,00 to SiHt miles arc r-earded as the workable work-able limits. But the prospects of airships are ir.uen less easy to dltisnose. It Is recocnized that ricid nirshin? can fly for distances of CilOO miles carrying a commercial load of approximately fifteen tons and that they are enabled to undertake Ion? flitrlits now believed to he impossible of attainment attain-ment by airplanes. t-lvcrv increase in tee size of nir?un is accompanied by greater relative efficiency, but the medium sized airships have greater advantages, it is said, than i penerall-- tuppo'sed. For example, the "North sea class" of ,oe. horse power ii- 1 capable of tra nspcr; Ine n losd of trore j than tr-e tons, whereas th.e fonr-enci'ici I (Ti.i.' airplane of ll'l'i-horse power is ah1-t to nYt ls tl-an four tons and burr.? twice as much gasoline. |