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This study aims to seek a new economic and environmental protection fuel tank inerting method.

The principle that serves as the basis for the cooling inerting process is described, the workflow of the cooling inerting system is designed, the mathematical model of the cooling inerting system is established, and the important performance changes of cooling inerting in the flight package line and the influence of key parameters on it are simulated by using Modelica software.

The results show that the cooling inerting system can be turned on to quickly reduce the vapour concentration in the gas phase in the fuel space and reduce the temperature below the flammability limit. Within a certain range of pumping flow, the inerting effect is more obvious when the pumping flow is larger. Simply running the cooling inerting system on the ground can remain the tank in an inert state throughout the flight envelope.

However, cooling inerting is suitable for models with fewer internal heat sources. An excessive number of internal heat sources will lead to inerting failure.

This study provides theoretical support for the feasibility of cooling inerting. Cooling inerting does not require engine air, and the cooling is mainly accomplished with air, which places a small load on the cooling system and has a much lower cost than the airborne hollow fibre film inerting technology widely used at present. It is a promising new inerting technology.

THE bootstrap scheme of refrigeration is an open cycle system resembling a turbo‐jet engine in its mode of working, but the overall heat energy changes occur in a reversed sense.

A Selection of Equipment of Use in the Production and Maintenance of Aircraft, Missiles, Space Vehicles and their Components. One of the largest vacuum brazing furnaces in use in Europe, now gives a shorter brazing cycle following improvements in vacuum furnace design introduced by Efco Furnaces Ltd. The output of the furnace has been increased by 50 per cent and this increase has been achieved by modifications which speed the cooling of a charge.

In this contribution a linear thermal model for hybrid circuits is presented. Both the heat dissipated in screen printed resistors and in mounted components such as transistors and integrated circuits is taken into account.

Having taken up our position on the above definition of this fundamental point, which closes the long‐standing discussion between upholders of the airscrew and those of the reaction system (just as in earlier days the distinction between impulse and work closed the classic discussion between the followers of Leibnitz and Descartes), we must now admit, without going into details, that this supposed attainment of equal efficiencies cannot be considered easy, if even possible, for the normal speeds of flight. It must also be admitted that a power unit, consisting of engine, compressor and jet, is at first sight a unit more complex, heavier and more bulky than the ordinary engine‐airscrew unit which has now been reduced to a high degree of simplicity and neatness. There is no doubt at all that in the sphere of the sub‐acoustic velocities the airscrew will reign supreme.

A study by the National Transportation Safety Board showed that postcrash fires occurred in approximately 8.0 per cent of the 22,002 general aviation accidents during 1974–1978. About 59 per cent of the accidents involving postcrash fire resulted in fatalities, while fatalities were involved in only 13.3 per cent of those accidents without fire. A survey of state‐of‐the‐art technology has demonstrated that feasible techniques for the containment dramatically reduces fire injuries and deaths. The study has shown that there are few regulations dealing with the postcrash fire problem in general aviation aircraft. The Safety Board has made six recommendations to the Federal Aviation Administration for corrective action.

This is a case of a crisis project management which showcases the unpredictable nature of the project and the role of management in handling the crisis. It is the case of a very severe cyclonic storm hitting the city of Visakhapatnam plant during October, 2014. The whole city was devastated and so was the situation in the Steel plant as it was under zero power conditions for around 10 days. This case gives need for managing an integrated steel plant in case of very severe cyclonic storm and documents the sequence of events and managing unforeseen uncertainty using NTCP concepts.

POWDER coating technology has provided a means of applying resin coatings to substrates via processing techniques which have two distinct advantages over conventional coating procedures. The first and probably most significant advantage from an ecological standpoint is the elimination of solvent carriers. The absence of solvents eliminates the emission of fumes and vapours thereby providing an environment that is virtually free of pollutants. Safety standards are also improved because the hazard of fire is substantially reduced.

Discusses the manufacturing technology associated with the assembly of printed circuit boards [PCBs] covering photolithography, etching, manual assembly of PCBs and the soldering methods involved. Describes how all the stages of PCB assembly can be automated and also looks at how the boards are cleaned and tested. Concludes that many factors need to be taken into account when deciding which method of manufacturing printed circuits would be best suited to a company’s requirements.

Results of experiments by research experts in the food value of canned foods will shortly be published by the Ministry of Agriculture. According to the Ministry the point has now been reached when canned foods may be said to sell on their own merits, and not as a mere substitute for fresh foods. The most obvious attribute of canned foods was that they made available a permanent supply of foodstuffs which were otherwise limited to a season, as well as making available to consumers fruits which could not otherwise be obtained in their natural state. In view of the wide range of varieties of canned foods and vegetables now available any generalised statement as to their value was impracticable, but it might be broadly stated that their energy‐producing value, as expressed in calories, was never inferior to that of the same kinds for consumption fresh, or in some other prepared form. Recent research had shown that vitamins were not necessarily destroyed by canning, and indeed some canned foods—for instance, canned tomatoes—might be very nearly as rich in vitamins as the raw product. An outstanding example of the importance of the canned food industry was the market which had been created for British fresh picked peas. Here the farmers had profited by an expanding but controlled increase of acreage under crop, with prices remaining very stable for the last few years. It was probable that the same general tendency would be observable with plums, and with most other canning crops, as the industry developed. In this country an increased consumption of home‐canned goods, if secured at the expense of imported canned goods, or some other imported agricultural commodity, would mean that a new market had been created for British growers, while a similar benefit would be obtained if export markets were developed. This would not be true if home‐canned goods replaced other home‐grown crops, but in this case it might mean a change‐over from an unprofitable to a profitable crop.