The high level of noise in helicopter cabins considerably compromises the comfort and safety pilot passengers. To verify feasibility effectiveness microperforated panel composite sound absorption structures for suppression cabins, simulation experimental studies were conducted on a model light cabin. First, three cabin wall designed. Then, finite element main gear/body acoustic vibration coupli...

physiologically thermal comfort condition is a limit of temperature and humidity. ,in which thermal control mechanism of human body is in its least activity . thermal comfort conditions not only have impact on sizes of heating and cooling equipment ,but also affects the thickness of insulation, and .energy, consumption of buildings. it is necessary to define thermal comfort condition for differ...

Although airports contribute to region’s economic development, they have a negative impact on the environment and on the communities around them. Environmental impacts such as noise, air and water pollution, and natural resources consumption are some of the implications resulting from the operation of airports that have the ability to constrain airports further development. In addition, increas...

Occupant comfort in buildings is one of the most crucial considerations designing a building. Accordingly, there growing interest this area. Aspects include thermal comfort, visual acoustic and indoor air quality (IAQ) satisfaction. The objective state-of-the-art review was to provide comprehensive, explicit, up-to-date literature on occupant buildings, since issue has great impact lifestyle, h...

Building science commonly studies comfort—a subjective concept—through quantitative methods. These methods are often not the most appropriate to study concepts because they struggle consider non-quantifiable factors that sometimes relevant in determination of people’s comfort. Complementing already used with qualitative ones can help illuminate some areas where former struggle...

Reviving natural ventilation (NV) for urban sustainability presents challenges indoor acoustic comfort. Active control and interference-based noise mitigation strategies, such as the use of loudspeakers, offer potential solutions to achieve comfort while maintaining NV. However, these approaches are not commonly integrated or evaluated from a perceptual standpoint. This study examines objective...

madam, cardamom, often referred to as queen of spices because of its very pleasant aroma and taste, has a history as old as human race. it is especially common in the indian subcontinent and is known for its delicious aroma, aphrodisiac properties and also as a common folk remedy to treat stomach aches.[1] both in middle east and india, it is used for flavoring hot beverages such as tea and cof...

the knowledge about climatic comfort plays an important role in the humans life and her activities. in fact many human activates are directly related with climatic comfort in every region. this paper analyzed the climatic comfort in province kurdistan (sanandaj, saghez, bijar, ghorve, zarine, marivan and bane meteorological stations). rates of climatic comfort analyzed in meteorological station...