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Aviation History
1935
1935 - 1509.PDF
JUNE 20, 1935. FLIGH1. INTERNATIONAL AEROBATICS Well-known Pilots of Several Countries take part in Lisbon Display: A MOST successful and interest ing air display, organised by the Aero Club, de Portugal, was held at Amadora Aero drome, near Lisbon, on Sunday, June 9. There were big names in the programme (writes Flight's' Lisbon correspondent), and the crowds wit nessed flying of a kind never before seen in Portugal, such as glider aero batics. Modern aircraft like the Douglas D.C.2, Junkers Ju.52-3m, Heinkel He7o and an Airspeed '' Envoy '' represented the commer cial side of flying, the Miles '' Hawk Major," Klemm, Biicker " Jung- mann;" D.H. "Puss Moth," D.H. "Gipsy Moth" and the Caudron C.630 ("Simoun") represented the sporting aircraft, arid military and aerobatic machines included a Hawker "Fury," D.H. " Tiger Moth " and C.30 Autogiro. British-mounted The Portuguese pilots opened the show (which was held in brilliant Hying weather) with neat and finished displays on a " Gipsy Moth'' and " Tiger Moths." ist-Lt. Jos6 Cabral followed on his "Fleet" A.io (Kinner B.5)—converted from a sea plane—and Capt. -Dias Leite, Portu guese Military Air Force, then im pressively showed off the Hawker " Fury "—the first time this machine has been displayed in public in Portugal. Mile. Edith Clark (French, in spite of the English name) did a delayed British Machines Present i Henri Bournat descending with two (French) parachutes. 'Ors parachute drop, pulling her rip-cord after a fall of over 1,500 feet, and then the Germans, Rudolf Oeltzer and Anna Keitsch, were towed up behind a Klemm in their gliders; this was the first time gliders had performed in public in Portugal, and the crowd was spellbound with wonder and admiration. Henri Bournat followed with a spectacular drop with two parachutes —one of the anchored type, fixed under the fuselage of a " Gipsy Moth," and the other of the pack- type; he performed "physical jerks " on the way down. Cosmopolitan Fraulein Louise Hoffmann—a pupil of the great Fieseler—gave a magnifi cent aerobatic display in her Buckner " Jungmann " biplane, and subse quent "turns" were contributed by Frant Novak, of Czechoslovakia ; Henri Bournat—sundry gyrations on a trapeze hung from a " Gipsy Moth " ; Lts. Luiz de la Guardia and Guitan on the C.30 Autogiro ; Lt. Costa Macedo, the Portuguese aerobatic "ace," on his Caproni 113 ("Double Mongoose"); Hans Fischer in his " Windspiel " glider; and, lastly, the hair-raising French pilot, Marcel Doret, who specialises in low-altitude stunting and "en closure-tickling. '' The indefatigable Major Pinheiro Correa, of the Portuguese Military Air Force, was responsible for the organisation. CORRESPONDENCE The Editor does not hold himself responsible for the opinions expressed by correspondents. The names and addresses of the writers, not necessarily for 'publication, must in all cases accompany letters intended for publication in these columns. STANDARDISING PERFORMANCE FIGURES weight of passenger fittings should be given. The maximum r» „-> T-U 1 ± t 1 w T * /~J r~ 1 „ •„ .,„.., u_«_ standard capacity of the fuel tanks and corresponding range [30401.—The plea put forward by Lt.-Cdr. Colson in your issue . ., .. r J Tr . , . .- ;, ,? X 6 s, i V7 £ i L I J J- x- t it ,m c should be given. If payload is specified, then the correspond- of May 23 for some form of standardisation of performance ^ s^^ be st^d v I figures has our full support, and we share his view that the s « .' •-...., ,• , °, . . • ... f£ , ,, , • .; t.-„ .,1. Absolute Ceiling, Service Ceiling, initial rate or climb, rate subiect is one which commands the closest investigation. We b- »* should, however, like to add the following observations to °J "»»h,at ,<??«* etudes an d time to climb from zero those enumerated in the article, as they have a considerable standard height (not from rest) to certain altitudes say 5,000 , ... , , , •, 10,000. 15,000 ft., etc., should be givep in .fine pitch it fitted bearing on published performance figures. ... v P som^Sufty'teTause6 it^a^be^se'lected^by The Tsefw'ifhin Absolute ceiling with^one or more engines stopped is easier wide limits. The commercial operator with good maintenance J° ™easure- .^ to d«nonstratc. and a more accurate guide , ,.^. .„ „ j u- u • U„K„ 4-u,„ +W to the capabilities of the aircraft than the rate of climb, facilities will generally use a speed which is higher than tnal , J j , , u , 1 L., ,1. TV P . , t • u i • .. „ <-,«,< Landing run and take-off run, and height over the screen, used by a private owner who may not wish to incur, a cost *> " ' . * . . • r • * u- u u „u • „™„i,i0,~,+;«r, should be given in a 5 m.p.h. wind with brakes and V.P. of maintenance which may not be such a serious consideration . &. , J r to the transport company. But since a buver will wish to pr?R?/i.er nttea; it- c it w u«= uauofuii w p y. " 3 With modern streamline aeroplanes some indication of the know the speed capabilities of the aeroplane, it is best to wRh ^ ^ »f .g uspfu, use^the maximum speed as a basis of comparison with « ^ ^ ^ are ified -,,• h perhaps, a maker s recommendation as to the speed which ^ difficult to measure and demonstrate, will be obtained when using a recommended fraction of the ^ j.^ \lignificance maximum h.p. Tolerances.—-The object of a tolerance on advertised per There will be a difference between the cases of Axed- and ff)rmance ig to ^ variations brtwee„ individual air- vanable-pitch propellers which need not be gone into here ^ Qf th(fsame type and the eflect of variatiolls in atmos. in detail. _ • pheric conditions which cannot be corrected for, such as bumps. It will be seen that it is not such a simple matter as might 1 wn currents etc The followin to,erances seem to be supposed to specify cruising speed. The best method is ' atisfactorv._ undoubtedly to state the maximum speed, and in the case ol Speeds or - H per cent variable pitch, there will generally be some height above sea 1 Q^ — •/;./.:".-• f or - 5 per cent.' level at which the maximum speed will be reached when using off andB]andl run + or _ ^ ££,, the maximum permissible induction pipe pressure and r.p.m. ^^ wejaht * 4- o 1 cent. licensed for continuous use. ' "* Load.— Tare weight should include water (if anv), instru- DE HAVILLAND AIRCRAFT CO., LTD.. ments, etc., but not passenger fittings; e indication of the F. N. St. Barbe, Sales Manager.
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