Diesel piston engines are becoming popular in the aeronautical field for the high efficiency and the possibility to work with the jp4 and jp8 fuels. This paper updates a secondary advantage of piston engine: the Meredith's effect. An accurate tuning and design of the cooling system can add a significant additional thurst to the engine plant. This effect, well known since the beginning of WWII, is being refined in this paper. Optimization of the diffuser and the nozzle has been performed and a new radiator, with wing section tubes, has been developed. As an example, this new cooling system has been applied to the VD007 hybrid turbodiesel engine. This power plant has been designed for the C130J airplanes. The curves of additional thrust vs. speed has been calculated along with size and shape.
The bonus of aircraft piston engines, an update of the Meredith effect / L. Piancastelli; M. Pellegrini. - In: INTERNATIONAL JOURNAL OF HEAT AND TECHNOLOGY. - ISSN 0392-8764. - STAMPA. - 25:(2007), pp. 51-56.
The bonus of aircraft piston engines, an update of the Meredith effect
PIANCASTELLI, LUCA;PELLEGRINI, MARCO
2007
Abstract
Diesel piston engines are becoming popular in the aeronautical field for the high efficiency and the possibility to work with the jp4 and jp8 fuels. This paper updates a secondary advantage of piston engine: the Meredith's effect. An accurate tuning and design of the cooling system can add a significant additional thurst to the engine plant. This effect, well known since the beginning of WWII, is being refined in this paper. Optimization of the diffuser and the nozzle has been performed and a new radiator, with wing section tubes, has been developed. As an example, this new cooling system has been applied to the VD007 hybrid turbodiesel engine. This power plant has been designed for the C130J airplanes. The curves of additional thrust vs. speed has been calculated along with size and shape.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
