scholarly journals Small Aircraft Infrared Radiation Measurements Supporting the Engine Airframe Aero-thermal Integration

2018 ◽  
Vol 47 (1) ◽  
pp. 51-63 ◽  
Author(s):  
Jozsef Rohacs ◽  
Istvan Jankovics ◽  
Istvan Gal ◽  
Jerzy Bakunowicz ◽  
Giuseppe Mingione ◽  
...  
Keyword(s):  
Thermal Radiation ◽  
Infrared Radiation ◽  
Gas Turbines ◽  
Factors Influencing ◽  
Thermal Integration ◽  
Radiation Measurements ◽  
Small Aircraft

The large, EU Supported ESPOSA (Efficient Systems and propulsion for Small Aircraft) project has developed new small gas turbines for small aircraft. One of the important tasks was the engine - airframe aero-thermal radiation integration that included task of minimizing the infrared radiation of the small aircraft, too. This paper discusses the factors influencing on the aircraft infrared radiation, its possible simulation and measurements and introduces the results of small aircraft infrared radiation measurements. The temperature of aircraft hot parts heated by engines were determined for validation of methodology developed and applied to engine - aircraft thermal integration.

Potential solar thermal integration in Spanish combined cycle gas turbines

2014 ◽  
Vol 37 ◽  
pp. 36-46 ◽  
Author(s):  
J. Antonanzas ◽  
E. Jimenez ◽  
J. Blanco ◽  
F. Antonanzas-Torres
Keyword(s):  
Gas Turbines ◽  
Combined Cycle ◽  
Solar Thermal ◽  
Thermal Integration

Analysis of CO2 Plasma Infrared Radiation Measurements

2016 ◽  
Author(s):  
Sayaka Nishimura ◽  
Adrien Lemal ◽  
Hiroki Takayanagi ◽  
Satoshi Nomura ◽  
Shingo Matsuyama ◽  
...  
Keyword(s):  
Infrared Radiation ◽  
Radiation Measurements ◽  
Co2 Plasma

Design and Development of Small Aircraft Gas Turbines in France

1965 ◽  
Vol 69 (655) ◽  
pp. 459-466 ◽  
Author(s):  
Joseph Szydlowski
Keyword(s):  
Gas Turbines ◽  
Second World War ◽  
Jet Engines ◽  
World War ◽  
Design And Development ◽  
The Creation ◽  
Second World ◽  
Small Aircraft

To Describe the development in France of small gas turbines of necessity confines one to the products of the Turbomeca Company. It is therefore not through lack of modesty that I speak of those engines which have been designed and built under my direction.After the Second World War our aims were quite ambitious. We envisaged the creation of jet engines up to 6000 kg (13200 lb) thrust, as well as the aircraft to suit. We soon realised that such ideas were far beyond the industrial and financial possibilities of the time.

scholarly journals Combining continuous spatial and temporal scales for SGD investigations using UAV-based thermal infrared measurements

2018 ◽  
Author(s):  
Ulf Mallast ◽  
Christian Siebert
Keyword(s):  
Thermal Radiation ◽  
Infrared Radiation ◽  
Thermal Infrared ◽  
Dead Sea ◽  
Flow Dynamics ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Infrared Measurements ◽  
Spatiotemporal Behavior ◽  
Aerial Vehicle

Abstract. Submarine groundwater discharge (SGD) is highly variable in spatial and temporal terms due to interplay of several terrestrial and marine processes. While discrete in-situ measurements provide a continuous temporal scale to investigate underlying processes and thus accounts for temporal heterogeneity, remotely sensed thermal infrared radiation sheds light on the spatial heterogeneity as it provides a continuous spatial scale. Here we report results of the combination of both, the continuous spatial and temporal scales, using the ability of an Unmanned Aerial Vehicle to hover above a predefined location and the continuous recording of thermal radiation of a coastal area at the Dead Sea (Israel). With a flight altitude of 65 m above the water surface resulting in a spatial resolution of 13 cm and a thermal camera (FLIRTau2) which measures the upwelling long-wave infrared radiation at 4 Hz resolution we are able to generate a time sequence of thermal radiation images which allows us to analyse spatiotemporal SGD dynamics. In turn, we are able to enhance focused SGD spots otherwise being camouflaged by strong lateral flow dynamics that may not be observed on single thermal radiation images. Plus, we show the spatiotemporal behavior of a SGD induced thermal radiation pattern to vary in size and over time by up to 55 % for focused SGDs and by up to 600 % for diffuse SGDs due to different underlying flow dynamics. These flow dynamics even display a short-term periodicity in the order of 20 to 78 s for diffuse SGD which we attribute to an interplay of conduit maturity/geometry and wave setup.

Thermal radiation measurements of downward spreading flames

2019 ◽  
Vol 160 ◽  
pp. 114022
Author(s):  
Grayson Lange ◽  
Luca Carmignani ◽  
Subrata Bhattacharjee
Keyword(s):  
Thermal Radiation ◽  
Radiation Measurements
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