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气艇通信日本科学家设计出一种用来代替通信卫星的充气飞艇。这种充有氦气的飞艇,可以在2万米的高度飞行,并将移动电话信号反射回地球。由于它的高度比卫星低得多,因此,不需要大功率的送话器,电话可以做得小而轻。现在,日本已经发射了3艘长8米的小型实验充氦飞艇。用于通信的飞艇的长度可以达到20米,用涂有聚乙烯的高强度膜分为几层制造。充人的气体为10％的
Gas Boat Communication Japanese scientists have designed an inflatable airship that replaces a communications satellite. This helium-filled airship can fly at an altitude of 20,000 meters and reflect the mobile phone signal back to Earth. Since its height is much lower than that of a satellite, a high-powered microphone is not required and the telephone can be made small and light. Now, Japan has already launched three small experimentally charged airships that are 8 meters long. The airships used for communications can reach a length of 20 meters and are made of several layers of high-strength polyethylene-coated membranes. The filling gas is 10%