| Show ARMY AIR PILOTS IN TRIP AT FEET first flight of iti its kind in upper atmosphere planes of the monety fourth squadron recently completed a cross country flight from selfridge field celd michigan to washington D 0 at an altitude of feet all the pilots used liquid oxygen this flight was of exceptional im penance not only from a military point of 0 view but also albo because of its significance to commercial operators erit tors it was the first massed and sustained flight of aircraft through the upper regions of t the he atmosphere or the lower regions of the stratosphere where there Is little oxygen the army air corps has been con ton ducting experiments in high alti tude formation flying over a con eld sid erable period planes hying flying at feet are invisible from the earth and are usually high above the alc dead d ban only the most sensitive instruments can detect their passing the flight fight demonstrated one mill tary fact that if washington should be endangered by an attack a squadron could take off from self ridge field held arrive at washington drop the auxiliary gasoline tanks and find hare have clent gasoline left to go right into combat at the ceiling of air combat just two hours after ater leaving field the commercial significance ot f the flight lies iles in the fact that lead ers erg of aviation industry expect to see bee most passenger air transport done at altitudes of feet or higher in the near future in her cally sealed cabin planes heated and supplied with oxygen from tanks at that altitude weather conditions are always good and higher speeds can be attained attai neki than thau near the earth the some P planes innes i and motors mot orsi |
