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The purpose of this paper is to design the novel oil–air distributor (N-OAD). Its structure design, oil feeding reliability, service life and viscosity properties of air bubble (AB) oil were analyzed. Meanwhile, the formation mechanism of AB oil was established based on Kelvin–Helmholtz instability.

First, oil–air distributor (OAD) and N-OAD were randomly selected for testing when the air pressure was 0.25 MPa and oil feeding was 100 times per hour. Then, the bubbles were found in the lubricant during the experiment, and the void fraction and viscosity properties of AB oil were tested by image processing method and the MARS 40 rheometer, respectively.

N-OAD has longer service life and higher working reliability than OAD. The key factors of AB oil formation were air pressure and oil feeding. And the void fraction of AB oil has different results on the viscosity at high and low shear rates.

The outcome of this research paper gives an insight to improve the reliability of oil–air lubrication systems and the safety factor of machine tool spindle operation.

The Air Navigation Directions, 1928 (A.N.D. 7) stipulate that the certification of an aircraft, in accordance with paragraph 8 of Schedule II of the Air Navigation Order, shall be made, in respect of the aircraft itself, by a ground engineer licensed in category “A” and in respect of the engines and engine installations, by a ground engineer licensed in category “C.”

THE ENGINES The two engines are B.M.W.801 type, each 14‐cylinder air‐cooled radials in two staggered rows, the top cylinder of the rear row being vertical (fig 9). A card in the cockpit gave the following information:

To achieve a full understanding of the role of marketing from plan to profit requires a knowledge of the basic building blocks. This textbook introduces the key concepts in the art or science of marketing to practising managers. Understanding your customers and consumers, the 4 Ps (Product, Place, Price and Promotion) provides the basic tools for effective marketing. Deploying your resources and informing your managerial decision making is dealt with in Unit VII introducing marketing intelligence, competition, budgeting and organisational issues. The logical conclusion of this effort is achieving sales and the particular techniques involved are explored in the final section.

THE ELCO CORPORATION of Denison Avenue, Cleveland, Ohio, have recently carried out some very exhaustive tests to demonstrate the suitability of multipurpose gear lubricants compounded with their Elco 11 additive in worm gear axles and transmissions under normal and severe operating conditions. Selection of worm axles and use of the lubricant in transmissions of the vehicles concerned were based on excellent results with hypoid and spiral bevel axle gears in earlier tests.

Marketing-managing customer relationship, market positioning, target marketing, product strategy, distribution, retailing and supply chain management, integrated marketing communications.

Undergraduate and graduate students in international marketing; business administration; strategic decision making and general management courses.

The case study focuses on the current scenario within the Indian automotive lubricants industry, in order to provide an understanding of the marketing challenges, especially in retailing and distribution, faced by organisations within this highly competitive sector. The case examines the implementation of marketing strategies into practice and provides an insight into the importance of branding, market segmentation, market positioning, product and pricing strategies and customer relationship management (CRM).

The case study enables the students to understand and analyse: the current business environment and dynamics of emergence in the Indian automotive lubricants market; the critical success factors for doing business in the Indian automotive lubricants market and the associated opportunities and challenges; the importance of distribution and retailing strategies in the Indian context; Izo's growth and expansion strategy in India; and Izo's sales management and CRM systems and there importance to the success of the business.

Teaching note.

THE Engineering, Marine, Welding and Nuclear Energy Exhibition opens at Olympia on April 16th and runs until April 30. It is open from 10 a.m. to 6 p.m. each day (except Sundays), with the exception of April 27th, 28th, and 29th, when it remains open until 8 p.m. Price of admission is 3s. There are well over 500 stands and of these between 60 and 70 are showing products that should be of interest to most readers of Scientific Lubrication, since they concern some type of lubrication equipment. Amongst these are the following, and the illustrations reproduced here concern items which will be exhibited on the stands. Items in bold type describe new products or products being exhibited for the first time.

World business, multinational company, and world enterprise are all terms being used with more frequency as a significantly larger number of businesses become international both in philosophy and in scope of operations. For a continually growing number of firms, the entire world is considered a marketplace for their products.

AT the end of the war in Europe, Germany had two aircraft jet engines in operational use; the Junkers Jumo 004, which has already been described, and the BMW 003 which forms the subject of this article. Compared with the Junkers 004 the BMW engine can be described as having gone one stage further in the development of the axial compressor engine, but production figures were not as great as those of the Junkers. Several hundred had been built, mainly for the Heinkel He 162 Volksjäger—the high‐speed fighter with the engine mounted over the fuselage. The engines made in the 003 series are the 003‐A0, ‐Al, ‐A2, ‐E1 and ‐E2. These are all similar and have much the same performance. The latest in this series, the 003‐A2, is shown in fig. 1, and although production was planned on a large scale, only a few of this type were actually made.

THE first essential in the design of an efficient exhaust system is that the exhaust gases should be carried away from the engine and clear of the aircraft without undue increase in exhaust back pressure. A further consideration of equal importance is the elimination of noise.