378 AIRCRAFT ENGINEERING December, 1938 Th e Fourth List of Translations from the Foreig n Press Obtainable from the Ai r Ministry A PPLICAT10NS for the supply of copies of Translation No. Translation No. Title and Journal Title and Journal translations mentioned below should be and Author and A uthor addressed to the Under-Secretary of Stale, Wings, the Incidence being (750) Air Ministry (R.T.P.), Kingsway, W.C.2, and will ECKART, G. Refraction of Ultra-Short partly Constant, and Partly be supplied free of charge as far as availability of PLENDL, H. Wireless Waves by the Varying Linearly. (L.F.F., stocks permit. Atmosphere and its Effect Vol 15, No. 5, 6.5.38, pp. Suggestions concerning new translations will be 260-74.) on Propagation along the considered in relation to general interest and facilities Surface of the Earth. (H.F. available. Technik, Vol. 52, No. 2, Material s and Elasticity August, 1938, pp . 44-58.) LIS T No. 4 (711) Aircraft (Construction and Performance) (757) GIOVANOZZI, Forced Hauling Vibrations of R. .. Translation No. PFISTER, W. Reflection of Wireless Waves Title and Journal a Prismatic Beam with and Author ROTH, O. H. at Stratified Media. (H.F. Internal Damping. (L'Aero- (739) Technik, Vol. 51, No. 5, teenica, Vol. 17, No. 12, KIEL , G. .. ..Measurements in Flight of the May, 1938, pp . 156-62.) December, 1937, pp . 1047- Distribution of Pressure on 66.) the Wing and the Tail Unit (740) Armament s an d Theory of Warfare of a Twin-Engined Aero. WEIGEL , W. Investigations on the Structure .. plane. (Jahrbuch der (745) of Plastics. (Z.V.D.I., Vol. deutschen I.uftfahrtfor- 2 cm.—Machine Cannon. 81 , No. 32, 7.8.37, pp. — schung, 1937, Vol. 1, pp . (W.T.M., Vol. 42, No. 2, 935-8.) 87-100.) February , 1938, pp . 48-61.) (741) (746) Engine s (Fuel s and Accessories) VEDROV , V. S. ..Flight Tests and Flying 3·7 cm.—Machine Cannon. (720) Qualities of the Long Range (W.T.M., Vol. 42, No. 3, PANOV , V. ..Corrosion Due to Petrol Con Aircraft C.A .11.1.-25. March, 1938, pp . 97-101.) taining Ethyl Fluid. (Air (Luschau, Vol. 4, No. 7, (753) Fleet News, U.S.S.R., Vol. 10.7.38, pp . 151-8.) (From ETHENE, P. .. Aircraft v. Battleship. (Rev. 20, No. 5, May, 1938, pp. Aeron. Eng. U.S.S.R., No. do l' Ar m de l'Air, No. 102, 68-74.) 1, 1938, pp . 9-24.) January , 1938, pp . 59-66.) (755) (759) (756) The V.D.M. Variable Pitch HENTZEN, F. H. . . Electric Spot Welding of — ROUGERSON, C. .. Multiplicity of Armament Propeller. (Flugsport, Vol. Duralumin in Construction Types v. Standardisation. 30, No. 10, 11.5.38, pp. of Aircraft. (Luftwissen, (Rev. de l'Arm de l'Air, 249 53.) Vol. 5, No . 8, August , 1938, No . 102, January, 1938, (758) pp . 279-83.) pp . 40-58.) ZlNNER, K. ..Mixture Formation and Com Aerodynamic s and Hydrodynamics bustion in High Speed Diesel Photograph y an d Radiation Engines. (Z.V.D.I., Vol. (682) (698) 82, No. 1, 1.1.38, pp. 1-14.) POHLHAUSEN, Heat Exchange between Solid E . LlCHTENBERGER, F. Temperature Indicator : (760) Bodies and Liquids of Small Measurement of Gas Radia AUER, L. . . Viscosity and Low Thermal ..Formula for the Performance tion with Photo-Cclls. Conductivity. (Z.A.M.M., at Altitude of Spark Ignition (Jahrbuc h der Deutschen Vol. I, No. 2, 1921, pp. Engines. (Z.V.D.I., Vol. Luftlahrtforschung, 1937, 115-21.) 82, No. 27, 2.7.38, pp. Vol. 2, pp . 263-72.) 789-93.) (744) SOTTORF, W . Experiments with Gliding (747) .. Surfaces. Part IV— Wireles s SCHMIESCHEK, U... Rapid Drying of Aerial Photo A nalysis of Results. (749) graphic Films without the (W.K.H. , Vol. 19, No. 5, OCHMANN, W . use of Complicated Mech Experiments on the Propaga 1.3.38, pp . 51-6, and No . 6, PLENDL, H. tion of Ultra-Short Wireless anical Apparatus. (Jahr 15.3.38, pp . G5-70.) Waves. (H.F. Technik, buch der Deutschen Luftfahrtforschung, 1937, (752) Vol. 52, No. 2, August, BAUSCH, K. Numerical Results on Elliptic Vol. 3 , pp . 104-5.) 1938, pp . 37-44.) .. Estimating Thrust Horse-Power To THE EDITOR. b.h.p. = b.h.p. × 0·59 DEA R SIR,—I have to thank Mr. Helsdon A 0 DEA R SIR,—In reading an article by and due to drop in revs, as well for pointing out that I omitted to correct the J. G. Willis on " Estimating Thrust Horse- b.h.p. for the slight drop in r.p.m. at altitude b.h.p. = b.h.p. × 0·59 × 0·968 =0·571 × b.h.p. 0 0 Power," in the July issue of AIRCRAKT in Table VI of my article in the July issue. since revs, are now 0·981 N which from ENGINEERING of this year, I have encountered Having determined the r.p.m. from Fig. (5 Table V, Col. 2, gives a factor f (N) a difficulty which perhaps Mr. Willis would be we must, of course, use the b.h.p. a t that r.p.m. = 0·968 approx. kind enough to elucidate. and not the maximum b.h.p. a t that altitude. On page 209, Table VI is an estimate of the Making this correction from the engine Finally the t.h.p. = b.h.p.× η drop in t.h.p. due to change of attitude at power curve, the last column of Table VI should = 0·57 ×b.h.p. ×0·983 η max. constant forward speed. read 0-917, 1-0, 0-863, 0-711 and 0-566, with = t.h.p. ×0·56 & not I would have thought that the t.h.p. at any slide rule accuracy. t.h.p. × 0·58 altitude would have been given by Hoping this oversight will have caused no Hoping you will be able to assist me in t.h.p. = b.h.p. × η great inconvenience. clearing up this point. where b.h.p. = b.h.p. × f (h) × f (N) Yours truly, I am, yours faithfully, were f (h) = effect of altitude at constant J . G. WILLIS. RICHAR D M. HELSDON. r.p.m. Rusholme, October 30, 1938. and f (N) = effect of revs. a t constant altitude. Coventry Technical College, For example, at 20,000) feet the effect of Coventry, Thornhill Avenue, altitude alone is Warwickshire. Bitterne, Southampton.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Dec 1, 1938
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera