Engineering Designer

The ID function involves a great deal more than appearance design. The designer is often called on to create the very concept of the product. In doing so, they will consider the utility, cost, innovation and human engineering aspects of the proposed product that relates to its basic appeal to the end-user. 

Human engineering. While the designer usually regards the problems of space limitations as being appearance related, they are most often the outcome of the ID s concern for human engineering, or the proper relationship of the product to the human body. For example, personal computers should be small enough to be carried by many people, coffee-cup handles should be comfortable to the hand, eyeglass frames should be easy on the ears, etc. 

Human engineering requirements often dictate the size, weight, and form of a product. This translates to smaller, lighter and contoured products as the ID works from the outside to its interior. Often this results in conflict with the company s engineering designer, who works basically from the interior to its outside. Compromise becomes an important factor as they all bring their require- 

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W. C. Davis, "Detonation Phenomena," ia / 2th A.nnual Symposium on Behaniour and Efiliation of Explosives in Engineering Design, University of New Mexico, Albuquerque, 1972. 

Military Pyrotechnics, AMCP 706-185 to 189, Engineering Design Handbook Series, U.S. Army Material Command (AMC), Alexandria, Va., 1974. 

S. A. Moses, "Explosive Components for Aerospace Systems," in Behaviour and Utilisation ofiExplosives in Engineering Design,... 

J. H. McLain, Principles of Explosive Behavior, Engineering Design Handbook, AMC 706-180, AMC, Alexandria, Va., 1972. 

Interior Ballistics of Guns, Engineering Design Handbook, AMCP 706—150, DARCOM, 1965. 

J. D. Griffin and R. E. Skochdopole, ia E. Baer, ed.. Engineering Design for Plastics, Reinhold Publishing Corp., New York, 1964. 

Knock is caused by unwanted chemical reactions in the combustion chamber. These reactions are a function of the specific chemical species which make up the fuel and the environmental conditions to which the fuel is subjected during the compression and power stroke in the engine. Therefore, both the chemical makeup of the fuel and the engine design parameters must be considered when trying to understand knock. 

J. H. Eaupel and E. E. Eisher, Engineering Design, McGraw Hill Book Co., Inc., New York, 1982. 

R. D. McCarty,. Hord, H. M. Roder, S elected Properties of Hydrogen (Engineering Design Data). U.S. Dept, of Commerce, National Bureau of Standards, Washington, D.C., 1981, pp. 6—291. 

R. A. Wadden and P. A. Scheff, Engineering Design for the Control of Workplace Hazards, McGraw-HiU Book Co. Inc., New York, 1987. 

JRMCP 706-133, Engineering Design Handbook, Maintainability Engineering Theory and Practice, U.S. Army Materiel Command, Washington, D.C., 1976. 

K. C. Kapur and L. R. Lamberson, Reliability in Engineering Design, John Wiley Sons, Inc., New York, 1977. 

U. S. Army Materiel Command, Engineering Design Handbooks-Development Guide forReliability, Part 2 Design for Reliability (AMCP 706-196) Part 3 Reliability Prediction (AMCP 706-197) Part 4 Reliability Measurement (AMCP 706-298), National Technical Information Service, Springfield, Va., 1976. 

Hz unit. To accommodate the higher firing temperatures and mass flows, these units employ advanced alloys, coatings, and modified cooling schemes. Many features of these units were derived from aircraft engine designs. 

Minimization of impingement risks focuses on site-specific analyses of potentially vulnerable species and selection of engineering designs which, within acceptable cost limits, keep impingement deaths low. 

Viscosity is an important property of calcium chloride solutions in terms of engineering design and in appHcation of such solutions to flow through porous media. Data and equations for estimating viscosities of calcium chloride solutions over the temperature range of 20—50°C are available (4). For example, at 25°C and in the concentration range from 0.27 to 5.1 molal (2.87—36.1 wt %) CaCl2, the viscosity increases from 0.96 to 5.10 mPa-s (=cP). 

R. J. Wakeman and Fan Deshun, Chemical Engineering Design Research 69(A5), 403 (1991). 

If the product is an engineering service, then the price is determined by the availabiHty, reputation, and price of competitive providers, as well as the uniqueness and scope of the service. Examples iaclude engineering design, technical laboratory services, project management, and constmction. 

The operating air/fuel mixture of the two-stroke engine designs range from 1.3 to 2.0 stoichiometric. This lean mixture plus the characteristic internal exhaust gas recirculation lowers the peak combustion temperatures and results in low NO formation. 

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