Extended Operation Testing of Stirling Convertors in Support of Stirling Radioisotope Power System Development

Lewandowski, Edward J.; Schreiber, Jeffrey G.; Wilson, Scott D.; Oriti, Salvatore M.; Cornell, Peggy A.; Schifer, Nicholas A.

doi:10.2514/6.2008-5791

Cited by 7 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Substituting Equation ( 14) into Equation (11), the working pressure is represented based on a Taylor series of order three…”

Section: Dynamic Modelmentioning

confidence: 99%

“…Therefore, the FPSE has attracted considerable attention from researchers worldwide. In the 1990s, NASA and MTI developed a 25‐kW FPSE for the Space Power Demonstrator Engine program, which consisted of two 12.5‐kW FPSEs and was applied in space exploration engineering 10,11 . Since 2003, NASA has conducted research on a 110‐W FPSE for a radioisotope power system program, and a pair of 55‐W FPSEs have been tested in a vacuum environment 12,13 .…”

Section: Introductionmentioning

confidence: 99%

“…engineering. 10,11 Since 2003, NASA has conducted research on a 110-W FPSE for a radioisotope power system program, and a pair of 55-W FPSEs have been tested in a vacuum environment. 12,13 Sunpower developed a 160-W FPSE as a portable power charger for military applications.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Influences of nonlinear parameters on the performance of a free‐piston Stirling engine

Ye,

Wang,

Yan

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

This study presents a thermodynamic–dynamic model of a free‐piston Stirling engine (FPSE) with nonlinear coefficients of spring, load damping, and pressure for working spaces. The effects of the nonlinear coefficients of hardening and softening springs on the movement and operating frequency of a displacer and piston are investigated. Subsequently, the influences of the nonlinear pressure terms of the working space and buffer spaces, as well as the nonlinear coefficients of the load on the amplitudes of the two pistons, frequency, and output powers are discussed. The results indicate that the low nonlinear coefficients of the spring have a minor effect on the amplitudes and frequency. As the high nonlinear coefficients of the hardening spring increase, the amplitudes and output power decrease, while the frequency increases. As the nonlinear terms of the softening spring increase, the amplitudes and output power reach maximum values, but the frequency is reduced by 3.55%. The effects of the nonlinear pressure terms on the amplitudes and output power are not evident. However, an increase in the nonlinear load leads to a significant decrease in the FPSE's performance.

show abstract

“…Substituting Equation ( 14) into Equation (11), the working pressure is represented based on a Taylor series of order three…”

Section: Dynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%