飞机美学刍议

飞机美学还是一个新名词,但作为飞机这个物体,不仅要求安全可靠,还应是美好的,很值得一读,并在工作中予以实现。本文从航空(航天)工业生产实际需要出发,系统地阐述了建立飞机(飞行器)美学的理由,研究对象和基本内容等,经初步研究,提出了飞机美学新学科的基本框架。同时论述了此学科对航空(航天)工业建设的重要性和应用价值,为此也提到对深入研究和普及教育等方面的对策和建议,相信读者会从中受到启示的。     

航空拾零四则

最近,据俄罗斯航空界权威人士称,不久将推出一种具有向后交战能力的苏-35单座战斗机和双座多用途改型机。 目前,苏-35的全部性能已经试飞完毕,其实用升限为18000米,高空最大时速为2500公里近地最大时速为1400公里,最大航程4000公里,空中加油一次的航程6500公里以上。最大作战载重为8000千克,可载     

用于恶劣天气条件下飞机着陆的雷达视景合成系统

描述了一种用于在恶劣天气情况下辅助飞机着陆的视景合成系统（ＳＶＳ），该系统由一个扫描毫米波雷达，平显和实时信号处理硬件组成，采用一套快速处理算法来增强和显示图像。该系统已在实际的恶劣天气情况进行了大量的高塔与飞行演示验证。此项工作的重要性在于它验证了系统的整体概念和信号处理算法的新颖性。     

俄罗斯Gascom公司计划发射4颗低轨遥感卫星

据俄新社2007年2月7日报道，俄罗斯Gascom通信公司将发射4颗Smotr低轨遥感卫星。这些卫星可获取有关环境灾害方面的精确信息，监视输油管道状况，协助进行资源勘测，并使得地界核准、突发事件监视和环境破坏评估等陆地应用变得更有效。     

The Suess-Urey mission (return of solar matter to Earth)

The Suess-Urey (S-U) mission has been proposed as a NASA Discovery mission to return samples of matter from the Sun to the Earth for isotopic and chemical analyses in terrestrial laboratories to provide a major improvement in our knowledge of the average chemical and isotopic composition of the solar system. The S-U spacecraft and sample return capsule will be placed in a halo orbit around the L1 Sun-Earth libration point for two years to collect solar wind ions which implant into large passive collectors made of ultra-pure materials. Constant Spacecraft-Sun-Earth geometries enable simple spin stabilized attitude control, simple passive thermal control, and a fixed medium gain antenna. Low data requirements and the safety of a Sun-pointed spinner, result in extremely low mission operations costs.     

Leg venous hemodynamics and leg volumes during a 42 day -6 degrees head-down bedrest

Seven healthy subjects were submitted to a 42-day head down bedrest, where leg venous compliance (venous distensibity index VDI) and leg volumes were assessed by mercury strain gauge plethysmography with venous occlusion and optoelectronic plethysmography, respectively. Plethysmographic and volometric measurements were made, before, during (at days 1, 4, 7, 14, 21, 26, 34 and 41), and after bedrest (days 1, 4, 7, 11 and 30 of the recovery period). Results showed a continuous decrease in leg volumes throughout bedrest, when VDI increased until day 26 of bedrest, and then decreased afterwards. The recovery period was characterized by a rapid return of VDI to prebedrest levels while leg volumes progressively normalised. These results showed that leg venous compliance changes are not always dependant upon skeletal muscle changes, and that factors other than size of muscle compartment are able to determine increases in leg venous compliance during long-term bedrest.     

The effect of head-down tilt on brain potentials related to visual attention

To study the possible effect of simulated weightlessness on brain function state, the brain event-related potentials (ERPs) in a simple visual selective response task were compared between HDT and HUT in 9 normal subjects. The results were: The Target(T) and non-Target(NT) flash signals both induced significant slow positive potentials which were supposed to related to the attention state; the amplitude of the positive potentials in frontal regions decreased significantly especially for NT-ERPs during HDT comprared with that during HUT. The data reported provide new evidence indicating that more attention should be paid on the brain function study during space flight.     

中国公务机如何起飞──就公务飞行标准访民航总局飞标司副司长饶绍武

对中国的公务飞行的采访过程中， 公务机的运行安全管理成为运营人关注的焦点问题之一。为此，记者走访了民航总局飞行标准司副司长饶绍武。 飞行员出身的饶副司长直接切入主题：中国的公务机和小飞机运输的运行安全管理，很快会有一整套的规章作为依据，这就是今年即将发布的ＣＣＡＲ９１部和预计明年出台的ＣＣＡＲ１３５部。饶副司长介绍，美国是世界上航空运输业最发达的国家，国土面积与我国相当，因而美国的航空管理模式是我们的一个重要参考。由于我国的公共运输发展相对更加迅速，运行安全管理也更为重要，因此中国民航总局首先抓了…     

不断超越自我,志与世界比肩─—中国航空工业巡礼之五

面对世界航空列强激烈的市场角逐和先进航空技术飞速发展的挑战，哈尔滨飞机工业集团在引进法国“海豚”直升机生产专利并最终在直－９上实现国产化；让国产运－１２轻型多用途飞机跻身于强手纷争的国际航空产品市场；凭借自己技术实力参与国外先进ＥＣ１２０直升机合作研制计划，以及创立航空工业股份公司，以真正意义上的航空高科技产品投入资本运营市场等方面，开创了一个又一个国内航空工业界的发展先河