An Investigation Of Aircraft Heaters
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| Author | : Llewellyn Michael Kraus Boelter |
| Publisher | : |
| Total Pages | : 666 |
| Release | : 1948 |
| Genre | : Airplanes |
| ISBN | : |
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An analysis is presented of the factors determining the power efficiency of radiation thermopiles of that type in which the receivers consist either of parts of the conductors themselves or of coatings or other electrically insulating materials in intimate contact with these conductors. On the basis of this analysis, which is applicable to thermopiles of a wide variety of constructions and materials, criterions for maximum power efficiency can be calculated. Such criterions are obtained for a silver-constantan plated-type thermopile. The design and construction of thermopiles in accordance with these criterions are described, and test data are reported, showing agreement between actual and predicted performance.
| Author | : Llewellyn Michael Kraus Boelter |
| Publisher | : |
| Total Pages | : |
| Release | : 1942 |
| Genre | : Aerodynamic heating |
| ISBN | : |
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| Author | : L. M. K. Boelter |
| Publisher | : |
| Total Pages | : 15 |
| Release | : 1951 |
| Genre | : Airplanes |
| ISBN | : |
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Experimental results on the thermal performance of an aircraft combustion-type heater are presented. Evaluation of the thermal effectiveness of the heater reveals that the effects of gaseous radiation and turbulence due to combustion are negligible.
| Author | : L.M.K. Boelter |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 1944 |
| Genre | : |
| ISBN | : |
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| Author | : Llewellyn Michael Kraus Boelter |
| Publisher | : |
| Total Pages | : 46 |
| Release | : 1949 |
| Genre | : Hot-wire anemometer |
| ISBN | : |
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By means of a hot-wire method, the thermal conductivity of air was measured from air temperatures of 50 degrees to 99 degrees F and the thermal conductivity of gasoline-engine exhauset gases were measured from gas temperatures of 250 degrees to 900 degrees F. The values obtained for air are in good agreement with other data that are available. The values of exhaust gases from an engine operating on fuel-air ratios between 0.056 to 0.085 are practically the same as those for air at the same temperature, but the richer mixtures (fuel-air ratios of 0.10 to 0.15) show increasingly larger values of thermal conductivity, the largest being approximately 30 percent greater than that of air. The thermal conductivity data obtained are shown in graphs at the end of this report.
| Author | : R.C. Martinelli |
| Publisher | : |
| Total Pages | : 69 |
| Release | : 1942 |
| Genre | : |
| ISBN | : |
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| Author | : R. C. Martinelli |
| Publisher | : |
| Total Pages | : 58 |
| Release | : 1942 |
| Genre | : Airplanes |
| ISBN | : |
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This report was written in an attempt to clarify the basic factors of heat transfer applied specifically to aircraft heating and to guide the experimenter in planning experiments to obtain further data. In the absence of exact test results, the authors have studied the literature and tentatively present equations and charts for the various thermal resistances encountered in aircraft work. These recommendations will be changed as more is known about the various components of the system under consideration.
| Author | : |
| Publisher | : |
| Total Pages | : 81 |
| Release | : 1942 |
| Genre | : |
| ISBN | : |
Download An Investigation of Aircraft Heaters. 1. Elementary Heat Transfer Consideratin in an Airplane Book in PDF, Epub and Kindle
| Author | : L. M. K. Boelter |
| Publisher | : |
| Total Pages | : 15 |
| Release | : 1951 |
| Genre | : |
| ISBN | : |
Download Preliminary Investigation of a Combustion-type Aircraft Heater Book in PDF, Epub and Kindle
| Author | : Llewellyn Michael Kraus Boelter |
| Publisher | : |
| Total Pages | : 28 |
| Release | : 1944 |
| Genre | : Air ducts |
| ISBN | : |
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A method of graphical analysis is outlined which allows the prediction of prediction of the thermal and aerodynamic performance of a ram-operated heater and duct system, for cabin heating or wing de-icing, at any altitude and airplane speed. This performance may be predicted from the isothermal total pressure drop across the components of the duct system at several ventilating air rates, and the thermal output of the heater at various air and exhaust gas rates.
