| Show 4 see feet altitude range military flight predicted by tester for boeing aircraft research SEATTLE N D showalter owalter Bh chief of flight test for 1319 air craft company predicts military flight at altitudes from to jo feet fe etmore more than nine miles mile above sea lea level for the near future the forecast made at a boeing sponsored symposium on en high alti tude flight established give five mile altitudes as ai at present practical levels for regular commercial al air travel tillI military tary craft operated at altitude altitudes ranging from to feet feat during the war the vat testing and development of high height flying military craft has made commercial flight in thi the practical ter said laid and provided an altitude safety lately margin well beyond operating levels flleta called safe Ite research starch programs program in which DAlli military tary planes pushed above the th foot level have given us adequate experience for commercial operation at lower altitudes he h said laid present development indi cates cat commercial flights should be safe lafe economical and comfortable at foot altitudes we ve believe that an entirely appropriate prop altitude margin Is provided by the background and experience peri ence at and above feet Mb owalter cited his companas comp anys 10 year program on research and development end and outlined the tests designed to build on na adequate altitude margin into the th boeing flight crews he said have hav spent pent more than 1300 hours houri above aboa feet and conduct edmore fly ing at feet or higher than all the rest of man collectively ct ively the program has hai been carried on dur dor big g the last lait five years in connection with army air forces about man hours aside from mechanical work on equip equipment men have been spent for each flight hour in the conducting of tests and corn com of data he said weeds needs consideration discussing government regulations of aircraft M F vanik boeing airworthiness engineer said laid how bew federal requirements in high altitude design must be carefully considered because of the wide extent of the field and its national importance the basic philosophy of government aircraft regulations he ha said laid Is to establish uniform safety rules of minimum standards which will result in maximum sa safety fety commensurate with the best interests of the general central public the development of aviation and the current science and art of aircraft design and operation to realize the full advantages to bt be obtained with high altitude air aff plan place design deilnn regulations must he b kept at a minimum and those that are considered nece ne cenary must bo be and flexible to allow of the best realization bf balanced design and efficiency experience in high altitude design gained through the th war will be translated into commercial airplane design he said and high altitude flying dying soon will become common due to its advantages advantage in speed comfort and economy |
