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Clearing the Ground

Clearing the Ground Aircraft Engineering THE MONTHLY SCIENTIFIC AND TECHNICAL ORGAN OF THE AERONAUTICAL ENGINEERING PROFESSION VOL XXI No 246 AUGUST 1949 optimistic hopes by succeeding in eliminating mathematics altogether from his treatise—for it is nothing less. He has succeeded in bringing HROUGHOUT the twenty years' career of AIRCRAFT EN­ off what is undoubtedly a real tour de force in covering the whole GINEERING, we have consistently tried to be of assistance to the ground of the stress investigations involved in the design of a modern stressman by publishing articles on his craft. This has been aeroplane written entirely in perfectly simple normal language with­ particularly the case since the advent of stressed-skin construction out resorting to a single formula from beginning to end. In the result, with its introduction of so many problems hitherto unknown to en­ he has produced what is so far as we are aware the first complete gineers, and our files bear witness to the large proportion of our space exposition of the theory of modern stressed-skin construction. Such that has been devoted to various aspects of the subject. an account is undoubtedly a very real need and we are glad indeed to have been the means through which it has been made available to students and the staffs of stress departments in the industry. In addi­ Our Problem tion to his position at Cranfield MR HEMP is, as most of our home The difficulty has always been that the contributions sent to us readers will know, exceptionally well qualified to lay down the funda­ have so often suffered from the defect of being too detailed. Authors mental principles of the subject through his close association with the have tended to devote their energies to an explanation of how they small band of workers who have been engaged for some time in have dealt with some comparatively minor problem. While these formulating them. articles have been useful, in a comparatively large number of in­ stances they have set out in considerable, and sometimes we fear unnecessary, detail the step-by-step calculations leading to the solu­ A New Feature tion of some individual case which has presented itself, and have In this issue there appears the first of a series of reference sheets been in fact merely instances of particular applications of general which will in future be a regular feature of our pages—in September, principles which arc to be found in any good up-to-date textbook. we shall be publishing similar information on the Dove. Our inten­ While, as we say, such articles have their uses and are undoubtedly tion is to provide engineering data of a type not usually included in helpful, on the other hand they have at times displayed an undeniably descriptive articles on the aeroplanes concerned. The series will be limited point of view and have perhaps tended to encourage a some­ designed to give useful details of British civil aeroplanes for the bene­ what 'hand to mouth' outlook. They have to a considerable extent fit of Licensed Aircraft Engineers and others so that they may have put the cart before the horse by picking out some problem of re­ by them for reference material data on types in which they are in­ stricted scope while by-passing the wider theories on which a solution terested, or with which they may come in contact, but in connexion should be based. with which they have not been issued with the official manuals. It will It is, of course, true that until comparatively recently many detail also make it possible to look up quickly such details as the makes of matters could only be approached in this way by a more or less rule accessories fitted. Every effort will be made to ensure that all the data of thumb adaptation of well-known methods of attacking somewhat given is as accurate and reliable as possible and it is our intention to analogous problems in more conventional engineering structures. It bring the sheets up to date from time to time by issuing them in re­ is no doubt to a large extent an historical fact that it is only in this way vised form. that a general theory enabling a fundamental approach to the new We would welcome comments and criticisms, whether in the science of analysing stressed-skin structures has been gradually built form of suggestions for the incorporation of additonal information up over the past decade or so. or for the omission of details that may be readily available else­ However that may be, it has in the few years immediately past where. been borne in upon us that what was required was a clear and general These first two examples should, indeed, be looked upon largely statement of the basic principles on which the stressing of modern as exemplifications of the sort of thing we are aiming at rather than aeroplane structures was founded. It had also frequently been pointed the finished product and, as we have said, we shall be glad of every out to us that pages of abstruse mathematics had a definitely deter­ assistance in making the series in its ultimate form of the maximum rent, not to say alarming, effect on readers and it was suggested that possible value to those concerned. Unfortunately, owing to the need the most helpful type of article at this time would be one of the widest for going to press unwontedly early with the September issue, in possible scope in which mathematics was kept to the barest view of the opening date of the S.B.A.C. Display, the Dove article will minimum. already be in print by the time these words appear—too late for modifications to be incorporated—but all suggestions will be borne The Solution in mind for future use. If there should prove to be sufficient demand we shall make the sheets available, after publication in AIRCRAFT The result has been the series by MR W. S. HEMP which is con­ ENGINEERING, in the form of separate reprints. cluded in this issue. MR HEMP has gone even further than our most S.B.A.C. DISPLAY FARNBOROUGH SEPTEMBER 6-11 We invite our readers to visit us at STAND NO 154. Bound volumes of AIRCRAFT ENGINEERING will be available for consultation, recent issues and various books and reprints on sale and booklets and pamphlets obtainable http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Clearing the Ground

Aircraft Engineering and Aerospace Technology , Volume 21 (8): 1 – Aug 1, 1949
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb031790
Publisher site
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Abstract

Aircraft Engineering THE MONTHLY SCIENTIFIC AND TECHNICAL ORGAN OF THE AERONAUTICAL ENGINEERING PROFESSION VOL XXI No 246 AUGUST 1949 optimistic hopes by succeeding in eliminating mathematics altogether from his treatise—for it is nothing less. He has succeeded in bringing HROUGHOUT the twenty years' career of AIRCRAFT EN­ off what is undoubtedly a real tour de force in covering the whole GINEERING, we have consistently tried to be of assistance to the ground of the stress investigations involved in the design of a modern stressman by publishing articles on his craft. This has been aeroplane written entirely in perfectly simple normal language with­ particularly the case since the advent of stressed-skin construction out resorting to a single formula from beginning to end. In the result, with its introduction of so many problems hitherto unknown to en­ he has produced what is so far as we are aware the first complete gineers, and our files bear witness to the large proportion of our space exposition of the theory of modern stressed-skin construction. Such that has been devoted to various aspects of the subject. an account is undoubtedly a very real need and we are glad indeed to have been the means through which it has been made available to students and the staffs of stress departments in the industry. In addi­ Our Problem tion to his position at Cranfield MR HEMP is, as most of our home The difficulty has always been that the contributions sent to us readers will know, exceptionally well qualified to lay down the funda­ have so often suffered from the defect of being too detailed. Authors mental principles of the subject through his close association with the have tended to devote their energies to an explanation of how they small band of workers who have been engaged for some time in have dealt with some comparatively minor problem. While these formulating them. articles have been useful, in a comparatively large number of in­ stances they have set out in considerable, and sometimes we fear unnecessary, detail the step-by-step calculations leading to the solu­ A New Feature tion of some individual case which has presented itself, and have In this issue there appears the first of a series of reference sheets been in fact merely instances of particular applications of general which will in future be a regular feature of our pages—in September, principles which arc to be found in any good up-to-date textbook. we shall be publishing similar information on the Dove. Our inten­ While, as we say, such articles have their uses and are undoubtedly tion is to provide engineering data of a type not usually included in helpful, on the other hand they have at times displayed an undeniably descriptive articles on the aeroplanes concerned. The series will be limited point of view and have perhaps tended to encourage a some­ designed to give useful details of British civil aeroplanes for the bene­ what 'hand to mouth' outlook. They have to a considerable extent fit of Licensed Aircraft Engineers and others so that they may have put the cart before the horse by picking out some problem of re­ by them for reference material data on types in which they are in­ stricted scope while by-passing the wider theories on which a solution terested, or with which they may come in contact, but in connexion should be based. with which they have not been issued with the official manuals. It will It is, of course, true that until comparatively recently many detail also make it possible to look up quickly such details as the makes of matters could only be approached in this way by a more or less rule accessories fitted. Every effort will be made to ensure that all the data of thumb adaptation of well-known methods of attacking somewhat given is as accurate and reliable as possible and it is our intention to analogous problems in more conventional engineering structures. It bring the sheets up to date from time to time by issuing them in re­ is no doubt to a large extent an historical fact that it is only in this way vised form. that a general theory enabling a fundamental approach to the new We would welcome comments and criticisms, whether in the science of analysing stressed-skin structures has been gradually built form of suggestions for the incorporation of additonal information up over the past decade or so. or for the omission of details that may be readily available else­ However that may be, it has in the few years immediately past where. been borne in upon us that what was required was a clear and general These first two examples should, indeed, be looked upon largely statement of the basic principles on which the stressing of modern as exemplifications of the sort of thing we are aiming at rather than aeroplane structures was founded. It had also frequently been pointed the finished product and, as we have said, we shall be glad of every out to us that pages of abstruse mathematics had a definitely deter­ assistance in making the series in its ultimate form of the maximum rent, not to say alarming, effect on readers and it was suggested that possible value to those concerned. Unfortunately, owing to the need the most helpful type of article at this time would be one of the widest for going to press unwontedly early with the September issue, in possible scope in which mathematics was kept to the barest view of the opening date of the S.B.A.C. Display, the Dove article will minimum. already be in print by the time these words appear—too late for modifications to be incorporated—but all suggestions will be borne The Solution in mind for future use. If there should prove to be sufficient demand we shall make the sheets available, after publication in AIRCRAFT The result has been the series by MR W. S. HEMP which is con­ ENGINEERING, in the form of separate reprints. cluded in this issue. MR HEMP has gone even further than our most S.B.A.C. DISPLAY FARNBOROUGH SEPTEMBER 6-11 We invite our readers to visit us at STAND NO 154. Bound volumes of AIRCRAFT ENGINEERING will be available for consultation, recent issues and various books and reprints on sale and booklets and pamphlets obtainable

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Aug 1, 1949

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