2017
DOI: 10.18280/ijht.350311
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Validation of a simplified method for the evaluation of pressure and temperature on a RR Merlin XX head

Abstract: Material behavior depends on average peak temperature, stress magnitude and stress gradient. This assumption is valid since temperatures varies slowly when compared to pressure (stress). In this paper, a RR Merlin head is simulated with a few mathematical models used in Formula 1 racing. These extremely simplified models make it possible to evaluate temperatures and pressures starting from very few data. The method is described in detail, along with the many experimental coefficients available from several yea… Show more

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Cited by 5 publications
(6 citation statements)
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“…Eqns. (1)(2)(3) are the "equivalent Mach speed method" in the International System of Units. In Eqns.…”
Section: The Corrected Mach Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Eqns. (1)(2)(3) are the "equivalent Mach speed method" in the International System of Units. In Eqns.…”
Section: The Corrected Mach Methodsmentioning
confidence: 99%
“…In the part 1 of this paper, the possibility of a simple variable-speed permanent-magnet generator in nominal conditions was positively evaluated. The efficiency of the turbogas APU (Auxiliary Power Units) depends on the turbogas true efficiency, the accessories and the electric generation system [3][4][5][6][7].…”
Section: Efficiencymentioning
confidence: 99%
“…A main layout difference is clearly visible by comparing Figure 1 and Figure 2. Figure 1 shows a "split-type" turbocharger with a long connecting shaft that allows the compressor and the turbine to be placed in the front and in the rear of the engine [5]. This solution allows shorter exhausts, with mechanical problems on the shaft design.…”
Section: The Power Unit: Exhaust System Layoutmentioning
confidence: 99%
“…Note that the viscosity of hydraulic oil may change with the temperature and pressure, leading to varying leakage rate of the hydraulic pump and hydraulic motor, which, in turn, affects the output flow of the pump and the input flow of the hydraulic motor. Therefore, the temperature and pressure must be compensated, that is, the leakage coefficients of the hydraulic pump and motor must be corrected [17,[20][21]. Here, the Vogel equation on viscosity-temperature relation is introduced:…”
Section: Multiparameter Coupling Mechanismmentioning
confidence: 99%