SAE AMS3940 Fiberboard, Hard-Pressed, Structural
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来源:标准资料网
Product Code:SAE AMS3940
Title:Fiberboard, Hard-Pressed, Structural
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers hard-pressed fiberboard in the form of flat panels. This product has been used typically for parts requiring moderate strength, such as panelling and sheathing of shipping containers, but usage is not limited to such applications.
上一篇:
SAE AMS3903/5 Cloth, Organic Fiber, High Modulus, Epoxy Resin Impregnated, Oc Style 120, 80 (180)下一篇:
SAE AMS3903/8 Cloth, Organic Fiber, High Modulus, Epoxy Resin Impregnated, Oc Style 328, 80 (180)【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-RadioFrequencyIdentificationEquipmentoperatingintheband865MHzto868MHzwithpowerlevelsupto2W-Part2:HarmonizedENcoveringessentialrequirementsofarticle3.2oftheR&T
【原文标准名称】:电磁兼容性和无线电频谱物质(ERM).功率小于2W在865MHz～868MHz频带上运行的无线电频谱识别设备.第2部分:包括R&TTE指令第3.2条款基本要求协调一致的EN标准(英文版本EN302208-2V1.3.1(2010-02)核准本作为德国标准)
【标准号】:DINEN302208-2-2010
【标准状态】:作废
【国别】:德国
【发布日期】:2010-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:频带;电磁兼容性;电磁兼容性(EMC);频率;识别;测量仪器;测量技术;功率等级;无线电工程;射频识别;无线电频率识别;RFID;规范(验收);电信;无线通信业务
【英文主题词】:Bandoffrequencies;Electromagneticcompatibility;EMC;Frequencies;Identification;Measuringinstruments;Measuringtechniques;Powerlevels;Radioengineering;RadioFrequencyIdentification;Radiofrequencyidentifications;RFID;Specification(approval);Telecommunications;Wirelesscommunicationservices
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_060_20
【页数】:2P;A4
【正文语种】:德语
Product Code:SAE AIR1168/4
Title:Ice, Rain, Fog, and Frost Protection
Issuing Committee:Ac-9c Aircraft Icing Technology Committee
Scope: The ability of aircraft to fly in adverse weather conditions is a requirement for most military and commercial aircraft. Ice buildups in critical areas can affect flight safety by adding drag and weight and thus adversely affecting stability. Supercooled water droplets may exist in clouds at ambient temperatures far below the freezing point. When the droplets are disturbed by an aircraft flying through them, the droplets will impinge and may freeze on airfoil surfaces, radomes, engine inlets, windshields, and other areas, resulting in weight and drag penalties or obstruction of vision through transparent surfaces. Some means, therefore, must be provided to prevent large ice buildups in critical areas. The inner surfaces of most cockpit transparencies are susceptible to condensation in the form of fog or frost during most normal aircraft operation, particularly when descending from high altitude flight, unless fog and frost protection systems are provided. Fog will form on the inside surface of the windshield whenever that surface is below the cockpit air dew point. If the surface temperature is below 32 degrees F, frost will form. Removal of rain from the windshields to maintain pilot visibility is accomplished by hot air jet blast or by windshield wipers. A rain repellent fluid is sometimes used in conjunction with either system for increased rain removal efficiency.
Rationale: The ability of aircraft to fly in adverse weather conditions is a requirement for most military and commercial aircraft. Ice buildups in critical areas can affect flight safety by adding drag and weight and thus adversely affecting stability. Supercooled water droplets may exist in clouds at ambient temperatures far below the freezing point. When the droplets are disturbed by an aircraft flying through them, the droplets will impinge and may freeze on airfoil surfaces, radomes, engine inlets, windshields, and other areas, resulting in weight and drag penalties or obstruction of vision through transparent surfaces. Some means, therefore, must be provided to prevent large ice buildups in critical areas. The inner surfaces of most cockpit transparencies are susceptible to condensation in the form of fog or frost during most normal aircraft operation, particularly when descending from high altitude flight, unless fog and frost protection systems are provided. Fog will form on the inside surface of the windshield whenever that surface is below the cockpit air dew point. If the surface temperature is below 32 degrees F, frost will form. Removal of rain from the windshields to maintain pilot visibility is accomplished by hot air jet blast or by windshield wipers. A rain repellent fluid is sometimes used in conjunction with either system for increased rain removal efficiency.
