122 AIRCRAFT ENGINEERING May, 1931 A Second Edition for Ground Engineers and a Good Popular Book on Airships Th e Care and Maintenance of Aircraft. of Engines. Chapter IX. The Installation and post-wa r period, one or two debatable state Secon d Edition. By Various Authors. (Air Testin g of Engine Performance Instruments. ment s are made. It is at least doubtful whether ways Publications, Ltd., 3s. 6d.). Chapte r X. The Installation and Testing of Air in fact the stability and control of the "Bodensee " Th e fact that a second edition of a technical work craft Performance Instruments. Chapter XI . The were unsatisfactory. On page 119 it is stated of this nature was called for within three months Installatio n and Checking of Turn Indicators and tha t "the maximum stresses with a fast air of the publication of the first is its own testimony Compasses. Chapter XII. The Composition, shi p are now known to occur in circling flight, t o the value of the contents. Structur e and Treatment of Metallic Materials. an d it was under these conditions, which the R.38 As readers will know, it constitutes a reissue of the Chapte r XIII . Mechanical Tests for the Examina ha d not been designed to withstand, that the series of articles that, with the title " A Course for tion of Metallic Materials. Chapter XIV. The disaster occurred." The report of the Accidents Ground Engineers," were published in the first Non-Metallic Materials used in Aircraft Construc Investigatio n Sub-Committee surely arrived at the fifteen numbers of AIRCRAFT ENGINEERING. This tion. Those who have contributed are:—Mr. A. conclusion that a higher bending moment can be McIsaac, Mr. S. G. Young, Mr. W. P . Savage, Major reached than obtains under conditions of steady course, written by a number of authors within the A. A. Ross, Mr. R. W. Sloley, Mr. J. J. A. Gilmore turnin g under full helm, and certainly when R.38 Aircraft Inspection Directorate and outside, covered an d Dr. G. Rudorf. failed she was doing rudder trials "swinging about th e whole field required to be known by a prospective ground engineer preparing himself to sit for the an approximately straight course—executing al W . L. M. official Air Ministry examination. Dealing as they ternatel y partial turns to port and starboard"— do primarily with fundamentals the chapters are t o quote from the Report—which is scarcely Th e Airship . Its Design , History , Operation unlikely to become out-of-date for some years, and "circlin g flight." an d Future . By Christophe r Sprigg. (Samp th e book can therefore be relied upon to remain a son Low, 12s. 6d.) Obtainable from AIRCRAFT On page 199, the author makes the startling stand-b y to which the possessor may safely con ENGINEERING . statemen t that "of the 127 craft built by the tinu e to turn for reference. The private owner Th e appearance of any book on airships is, in Zeppelin Company, apart from damages due to who wishes to fit himself for doing his own running these days an event, and even though, as in this enem y action, loss of life has been in every case repairs, and even carry out a periodical refit, will case, it is intended primarily for popular consump du e to ignition of th e hydrogen. The sole exception find nothing here too advanced for his purpose and tion, the courage of the author and publishers is the 'Dixmude'. " There are several inaccuracies should also find it of great use and value. deserves the recognition of an extended review. in this. In the first place, the Zeppelin Company Turnin g over the pages of this new edition one Mr. Christopher Sprigg's name is not known as hav e not built 127 airships, but only 118, including canno t help being again struck by the uniformity th e "Graf Zeppelin," The author has forgotten an airship enthusiast, and this book is the more wit h which the different writers have succeeded in tha t although this ship is numbered L.Z.127, there welcome for coming from the pen of one who is not moulding themselves to the common end. It is were two gaps—between L.72 (the last war-time suspect on account of close association with lighter- impossible t o pick ou t one chapte r more tha n another airship, numbered L.Z.I 14) and the "Bodensee" than-ai r aircraft in the past, particularly as he for special praise. All are admirably lucid and (L.Z.120), and between the "Nordstern " (L.Z.121) shows tha t he has made a close stud y of th e subject. thoroughl y practical. There can seldom have been and the "Lo s Angeles" (L.Z.126)—so tha t 9 ships His attitude towards the ever-present contro a n "omnibus " volume in which an editor could in the sequence of numbering were never built. versy between the airship and the aeroplane, which mor e justifiably congratulate himself on the way his H e has forgotten also tha t L. 1 collapsed in the air seems likely to continue, despite much lip-service author s have carried out his intentions. in 1913, in somewhat similar circumstances to the to the theory of "roo m in the air for both," is made Owing to the second edition being merely a late r "Shenandoah" disaster, and killed all her clear in an introductory chapter, and elaborated in reprin t of the first the following small misprints crew, without catching fire. Actually, so far as the a final summary entitled "To-morrow." remain uncorrected: p. 15, for "4½ in. tucks " read presen t writer knows, only three Zeppelins (L.2, Th e book starts, after the introductory chapter L.10 and L.59) have caused fatalities by catching "fou r and a half tucks" ; p. 43, 5 lines from the alread y mentioned, with an adequate summary for fire. Mention of L.59 brings us to the fact that the end, for "Category B," read "Category C"; th e non-technical reader of the principles of lift, "ful l list of German Zeppelins and their fate" p . 51, for "Chapters V and VI," read "Chapters an d then goes on to describe in general terms the printe d in an Appendix from an article by Captain I V and V." design and construction of balloon and "pressure Erns t Lehmann is by no means reliable. L.2 does airships"—whic h excellent phrase the author T o those who are unfamiliar with it, the scope no t occur in his list a t all ; L.59 is shown as "sho t adopt s to cover the non-rigid and semi-rigid types of the book can, perhaps, best be indicated by down by enemy," which was not the case; while recapitulatin g the table of contents. Chapter I. which, as he points out, in some of their manifesta L.9 is given twice, as is also the first "Ersatz Th e Erection and Alignment of the Aeroplane tion s so resemble each other as to become almost Deutschland. " The only fully complete and reliable Structure . Chapter II. Controls, Supply Systems indistinguishable. This is all well done but when list the present writer has seen was published in an d Inspection before Flight. Chapter III. In th e structure of the rigid airship comes to be dealt th e American paper Automotive Industries of May, spection of Structure and Component Parts after with, the author is rather less happy. He classes 19, 1921. Overhaul . Chapter IV. Dismantling and Top rigid airships into two divisions—Zeppelin and British practice. This seems to bring R.100 and Overhau l of the Engine. Chapter V. Engine I t has been felt worth while to call attention to R.101 closer together than is justified. The mere Running-in after Top Overhaul, and Routine a few small blemishes in this book, because it is on omission of intermediate longitudinals and trans Inspection. Chapter VI. Inspection of Engine th e whole excellently well calculated to fulfil the verse frames hardly differentiates the former from Installatio n and Instruments after Overhaul. purpose for which it is designed. As a popular th e "Gra f Zeppelin" as much as is implied, whereas Chapte r VII . Workshop Manipulation and Testing exposition of the characteristics and possibilities of ther e were many features purely special to R.101. of Engine Materials and Parts. Chapter VIII. th e airship it can be thoroughly recommended. Th e Complete Overhaul and Subsequent Testing In a chapter dealing with the immediate \V. L. M.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: May 1, 1931
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