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portada An Investigation of the Icing and Heated-Air De-Icing Characteristics of the R-2600-13 Induction System (in English)
Type
Physical Book
Publisher
Language
Inglés
Pages
24
Format
Paperback
Dimensions
24.6 x 18.9 x 0.1 cm
Weight
0.06 kg.
ISBN13
9781289228279

An Investigation of the Icing and Heated-Air De-Icing Characteristics of the R-2600-13 Induction System (in English)

Nasa Technical Reports Server (Ntrs) (Author) · Gilbert E. Chapman (Author) · Bibliogov · Paperback

An Investigation of the Icing and Heated-Air De-Icing Characteristics of the R-2600-13 Induction System (in English) - Nasa Technical Reports Server (Ntrs) ; Chapman, Gilbert E.

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Synopsis "An Investigation of the Icing and Heated-Air De-Icing Characteristics of the R-2600-13 Induction System (in English)"

A laboratory investigation was made on a Holley 1685-HB carburetor mounted on an R-2600-13 supercharger assembly to determine the icing characteristics and the heated-air de-icing requirements of this portion of the B-25D airplane induction system. Icing has been found to be most prevalent at relatively small throttle openings and, consequently, all runs were made at simulated 60-percent normal rated power condition. Icing characteristics were determined during a series of 15-minute runs over a range of inlet-air conditions. For the de-icing investigation severe impact ice was allowed to form in the induction system and the time required for the recovery of 95 percent of the maximum possible air flow at the original throttle setting was then determined for a range of wet-bulb temperatures. Results of these runs showed that ice on the walls of the carburetor adapter and on the rim of the impeller-shroud portion of the supercharger diffuser plate did not affect engine operation at 60-percent normal rated power. Ice that adversely affected the air flow and the fuel-air ratio was formed only on the central web of the carburetor and then only when the inlet air was saturated or contained free moisture in excess of saturation. No serious ice formations were observed at inlet-air temperatures above 66 0 F or with an inlet-air enthalpy greater than 34 Btu per pound. The maximum temperature at. which any trace of icing could be detected was 1110 F with a relative humidity of approximately 28 percent, The air-flow recovery time for emergency de-icing was 0.3 minute for.an enthalpy of 35 Btu per pound or wet-bulb temperature of 68 0 F. Further increase in enthalpy and wet-bulb temperature above these values resulted in very slight improvement in recovery time.

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The book is written in English.
The binding of this edition is Paperback.

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