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Small Aircraft Infrared Radiation Measurements Supporting the Engine Airframe Aero-thermal Integration
摘要： The large, EU Supported ESPOSA (Efficient Systems and propulsion for Small Aircraft) project has developed new small gas turbines for small aircraft. One of the important tasks was the engine - airframe aero-thermal radiation integration that included task of minimizing the infrared radiation of the small aircraft, too. This paper discusses the factors influencing on the aircraft infrared radiation, its possible simulation and measurements and introduces the results of small aircraft infrared radiation measurements. The temperature of aircraft hot parts heated by engines were determined for validation of methodology developed and applied to engine - aircraft thermal integration.
关键词： aircraft,engine - airframe thermal integration,radiation measurements,infrared radiation
更新于2025-09-23 15:23:52
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The role of plasmonic excitations in the optical activity of periodic structures with configurational chirality
摘要： Broken mirror symmetry of chiral structures imposes a lack of mirror symmetry in the scattering pro?le. When an energy dissipation channel is introduced in the system, an overall optical activity arises. Plasmonic nanostructures, therefore, are an ideal platform to induce optical activity by means of constitutional or con?gurational chirality. We experimentally investigate the mechanism of plasmonically induced con?gurational chirality in a periodic monoclinic hole array with a broken mirror symmetry. The resulting optical activity of the structure is studied by using k-space leakage radiation measurements.
关键词： k-space leakage radiation measurements,plasmonic excitations,periodic structures,optical activity,configurational chirality
更新于2025-09-23 15:21:01