scholarly journals Technological methods for science intensive product life increase

2021 ◽  
Vol 2021 (7) ◽  
pp. 3-11
Author(s):  
Vladislav Smolentsev ◽  
Sergey Kovalev ◽  
Natalia Potashnikova
Keyword(s):  
Thermal Insulation ◽  
Protective Coating ◽  
Jet Engines ◽  
Combustion Chambers ◽  
Resistant Material ◽  
Heat Resistant Material ◽  
Analysis Of Results ◽  
Technological Impact ◽  
Technological Methods ◽  
Operation Characteristics

The analysis of results of technological impact research upon operation characteristics of science intensive products and the ways to increase parts life of a hot area in aircraft and rocket jet engines is shown. It is shown that the basic factor of promising products for life increase consists in thermal-insulation increase and cooling jet nozzles and combustion chambers. For this the investigations are carried out for new heat-resistant material and protective coating development.

Practical Bypass Mixing Systems for Fan Jet Aero Engines

1966 ◽  
Vol 17 (2) ◽  
pp. 141-160 ◽  
Author(s):  
T. H. Frost
Keyword(s):  
Gas Turbines ◽  
Minimum Weight ◽  
Jet Engines ◽  
Metal Interface ◽  
Combustion Chambers ◽  
Propulsion Systems ◽  
Jet Engine ◽  
Aero Engines ◽  
Corrugated Metal ◽  
Constant Static Pressure

SummaryMixing systems have many applications in gas turbines and aircraft jet propulsion, e.g. mixing zones in combustion chambers, ejectors for jet lift thrust augmentors and supersonic propulsion systems. A further application similar to that of combustion chamber mixing is that of mixing the cold and hot exhausts of a bypass jet engine. These are both characterised by mixing at constant static pressure and approximately constant total pressure as opposed to the more general case of unequal pressures in ejector systems (Fig. 1).The exhaust mixing process as used in Rolls-Royce bypass jet engines, e.g. Spey and Conway, enables the potential of the bypass principle, in terms of minimum weight and fuel consumption, to be exploited by a simple practical device.This is achieved by mixing the two streams in a common duct of fairly short dimensions with a corrugated metal interface on the inlet side. The consideration of these practical systems forms the main topic of this paper.

scholarly journals Spatial-temporal diagnostics of the system of a plasma stream interacting with a surface of heat resistant material

2018 ◽  
Vol 946 ◽  
pp. 012174 ◽  
Author(s):  
V F Chinnov ◽  
M A Sargsyan ◽  
M Kh Gadzhiev ◽  
M A Khromov ◽  
D I Kavyrshin ◽  
...  
Keyword(s):  
Plasma Stream ◽  
Resistant Material ◽  
Heat Resistant ◽  
Heat Resistant Material

scholarly journals Latest Science News

2017 ◽  
Vol 5 (01) ◽  
Author(s):  
Deepak Kohli
Keyword(s):  
Rice Straw ◽  
Honey Bee ◽  
Aloe Vera ◽  
Resistant Material ◽  
Scientific World ◽  
The World ◽  
Heat Resistant Material ◽  
Science News ◽  
Cancer Medicine ◽  
Bionic Leaf

The article embodies informations regarding latest scientific researches all over the world. World’s best heat resistant material, Sweet paper removing bacteria from water, micro microscope, odour of Neem and Aloe vera in fabric, world’s first solar road in France, a new star to be born in year 2022, selfi alert app will alert regarding suicidal selfie, costliest wax found in sea, wood from rice straw, formation of new age computers from D.N.A., tools get energy from ice cold wire, useful grass for flying in future, bionic leaf helpful in fertilizer production, cancer medicine from ‘Rampatri’, eyes of honey bee more sharper than expectation, vehicle will not collide with animals on road, bag shaped sea animals are ancient ancestors, blackhole emitting fuel, incurable diseases are treated with D.N.A. editing, testing of new medicine via 3D chip, robot will depute and sort, bandage will predict the healing of wound without opening it, etc. are the main topics covered in the aritcle. It fulfills the aim to provide latest knowledge about scientific world.

Digital technologies in detecting inhomogeneous concentration zones in heat-resistant nickel alloys structure, including those obtained by selective laser melting

2021 ◽  
pp. 32-47
Author(s):  
A. N. Raevskikh
Keyword(s):  
Nickel Alloys ◽  
Integrated Approach ◽  
Thermal Study ◽  
Resistant Material ◽  
Initial State ◽  
Electron Microscopic ◽  
Heat Resistant ◽  
Heat Resistant Material ◽  
Nickel Base ◽  
The Impact

This work presents the experimental data obtained using an integrated approach in the study of the chemical, crystallographic and morphological homogeneity of the structure of a heat-resistant material on a nickel base with carbide-intermetallic hardening and an increased content of the γ-phase, synthesized on single-crystal substrates of various compositions with CHO <001> in Z-direction. Using the proposed method for studying the capabilities and certification of different-level structural structures of samples in the initial state and after thermal study of the impact. The analysis was carried out using the system for EBSD analysis integrated into the scanning electron microscope and the software package for the analysis of electron microscopic images. 

Assessment of Heat Resistant Concrete of Magnesia-Phosphate

2013 ◽  
Vol 800 ◽  
pp. 341-344
Author(s):  
Lin Chun Zhang
Keyword(s):  
Heat Resistance ◽  
Refractory Concrete ◽  
Setting Time ◽  
Potassium Phosphate ◽  
Resistant Material ◽  
Heat Resistant ◽  
Repair Materials ◽  
Heat Resistant Material ◽  
Early Strength ◽  
Short Setting Time

In this paper, we choose heat resistant material wollastonite and corundum to get the concrete which has heat resistance up to 600 centigrade. SEM reveals that at the temperature of 400 centigrade and 600 centigrade, the material is very dense. But when the temperature gets 800 centigrade and 1000 centigrade, the SEM reveals cracks. The refractory concrete made by magnesium potassium phosphate as the binder and wollastonite and corundum as aggregate has short setting time, early strength and rapid hardening. And it is suitable for emergency repair materials for the kiln.

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