工业部门和政府机构两个方面都必须对航空试验设备的规划和研制工作有个明确的指导思想。这种指导思想必须根据基本技术发展趋势,仔细地把发展件设备规划同技术目标和商业目标联系起来。规划获准的环境条件会对这样的规划产生强烈的影响。通常,最困难的问题是能否及早筹集大笔

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问题     工业部门和政府机构两个方面都必须对航空试验设备的规划和研制工作有个明确的指导思想。这种指导思想必须根据基本技术发展趋势,仔细地把发展件设备规划同技术目标和商业目标联系起来。规划获准的环境条件会对这样的规划产生强烈的影响。通常,最困难的问题是能否及早筹集大笔基建投资,以便适时提供设备,满足实际研制工作的需要。
    人们通常根据飞行任务的类型来考察各种各样的未来航空器,并试图从下述五个重要方面来判断基本的技术发展趋势:总重、尺寸、飞行高度、最大飞行进度以及提供的推力与功率。在所有这五个方面都存在着明显的发展趋势,它们强烈显示出对新设备的需求。

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答案It is necessary for the industrial sector and government agencies to institute explicit guiding ideology for the planning, research and manufacture of aeronautical test facilities. This guiding ideology has to connect planning and development of facilities with both technical and commercial goals, following the trend of basic technological development. The condition for the approval of planning exerts a strong influence over it. Normally, the most difficult part is to raise a large sum of fund for capital construction as soon as possible so that equipment will be provided in time and research needs fulfilled. Various future aircrafts are usually examined on the basis of flight mission types, and basic technological development trend is predicted based on following five crucial factors; total weight, size, flight altitude, maximum flight speed and propulsive force and power. Distinct development trend has been evident in all these five factors, showing a strong need for new facilities.

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