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Show DAY OF FAMILY AIR FLIVER BELIEVED TO BE IN SIGHT AS RESULT OF AUTO-GYRO TESTS rotary motor. A post has been erected oven the center of balance of the machine, nnd four freely ro-tnting ro-tnting varies nttached to the top of the post. Tlie new machines now building, however, have been designed de-signed throughout to meet the special spec-ial requirements of an airplnue of the anto-gyro type. '"The undercarriages for instnnce," said Cierva, "have been made very wide and very strong nnd nre equipped equip-ped with new devices for absorbing the shock of landing. In addition the nileron attachments used on the present machine for lateral balancing bal-ancing have been dispensed with in one of the new machines, in view of our belief that with the windmill wind-mill form of nirplnne correct balance bal-ance of the machine is automatically automatical-ly maintained by the gyroscopic action ac-tion of the rotating vanes. Practically Prac-tically all external bracing of the machines have been eliminated and their lines have been beautifully 'eleaned-up.' " In the present form of auto-gyro no power is applied to the vanes of the machine. It climbs or maintains main-tains its altiutde in the air by virtue vir-tue of the lift which is obtained from the vanes as they are spun around by the pressure of the air as the machine is pulled through the air by its tractor propeller. These vanes spin at about 160 revolutions revo-lutions per minute. This means that their tips nre traveling through the air at well over 200 miles an hour, at which speed they exert a tremendous lift per square foot of surface. When the motor stops und the machine commences to descend the downward down-ward motion of the machine results in a continuation of the pressure against the vanes with the result that they continue to spin and the machine floats downward in much the same manner and at much the same speed of a parachute, though if the pilot desires he can glide the machine down at an angle and land it in the same way that an ordinary or-dinary airplane is landed. Cierva said that he was not yet making any definite plans, but that he hoped to demonstrate the machine ma-chine in the United States and in South America some time next yea r. By KEITH JONES imitod Press Staff Correspondent) LONDON, July 22 (t'P) British iproimitical experts who have witnessed wit-nessed the performance of the new nln-gyro or "windmill" airplane ifsisnwl by Senor de la Cierva, the Spanish inventor, are looking forward for-ward to the approaching day of the (lying automobile. Cierva himself, and A. V. Hoe, hMd of the airplane concern which lias just completed one new anto-Evro anto-Evro to the order of the British Air Ministry and is at work on two others, are both optimistic that airplane air-plane design is at last on the right trick for the development of a machine that can land safely on a country road or a tennis court. The question of vertical ascent, however, has yet to be solved. From the point of view of the development de-velopment of a flying automobile in the near future, much depends Qfon experiments which will be conducted con-ducted nt Southampton in August with a 25-35 horsepower auto-gyro new in course of construction. "If it is as successful as we expect ex-pect it to be," said Cierva in an Interview with the United Press, "long strides will have been taken in the direction of the development o( a flying automobile, for the difficult dif-ficult problem of a safe nnd practically prac-tically vertical landing from any beicht will have been solved. There vet remains, however the problem of vertical ascent. ) "This admittedly presents a nnra-i nnra-i her of problems that we have not jjet solved, hut theoretically, at any itate, if the same power which nbw looses the machine to rise by drag-jeiiiB drag-jeiiiB it through the air with a tractor tract-or propeller, were applied directly to rotating the overhead vanes of Ihe nato-gyro, the whole machine ifiuiki rise vertically. This transference trans-ference of the power from the propeller pro-peller to the vanes is by no means msulvnule. Its solution constitutes Ihe next stage of experimentation Wli the auto-gyro arid if we suc-'f(l suc-'f(l the day of the safe flying utomobile will definitely have ar-tivetl.' ar-tivetl.' Such a machine, said Cierva lnt is, one of 25 to 50 horsepower .mrrylng one or two persons if turned out on a mass production '""is. could he sold in the neighbor-i"4 neighbor-i"4 of S2.000. Meanwhile the British Air MlnlS-lr)' MlnlS-lr)' is awaiting with interest the '"'It of tests of the two other ma-thnios ma-thnios which are now being built ! Us orders and which will also 1' riy in August, or early Sep-tcnuVr. Sep-tcnuVr. Both of these have been "''Mciiuled to carry service nir-Wulod nir-Wulod radial engines of approxi-"'"Icly approxi-"'"Icly 200 horse-power. By the I'wlflcatlon of a standard service fiielne officials of the Air Ministry .'inert to be uble to obtain valu-',le valu-',le toa as to the performance of no auto-gyro as compared with ser-e ser-e airplanes of the standard va-'""'y va-'""'y equipped with the same sort "Power plants. Tbe British built auto-gyro which "'lls privately demonstrated at tliurapton, June 23rd, and pub-"'l.v pub-"'l.v demonstrated nt the Rovnl Air 'ijrce pageant July 3rd, is practic-''' practic-''' Identical wilh first machine nmvn In England in the fall of ' It consists simply of a stand-ri stand-ri Avro airplane fuselage and un-oercnrriiige un-oercnrriiige and a 130-horsopower |