论文部分内容阅读
9月3日纪念抗战胜利70周年的大阅兵中,直升机悬挂着两面旗帜,以每小时180千米的速度飞过天安门。这是中国利用神舟飞船返回着陆的降落伞技术制造的巨幅国旗和军旗。要让国旗、军旗在阅兵时不仅不能随意摆动,还要处于舒展状态,并且高速飞行后丝毫无破损,曾是阅兵筹备中的一大难题。高速飞行中,挂在飞机钢索上的红旗会受到巨大的气流冲击,承受的风力超过超强台风,日常使用的红旗远
On September 3, in the parade commemorating the 70th anniversary of the victory of the war of resistance against Japan, two flags were hoisted by helicopters, flying over Tiananmen Square at 180 kilometers per hour. This is a huge flag and flag made by China’s parachute technology using Shenzhou spacecraft to return to land. In order to allow the national flag and military flag to not only be paraphrased during the parade, but also be in a state of stretch, and without any damage after the high-speed flight, it was once a major challenge in the preparations for parade. During the high-speed flight, the red flag hanging on the wireline of the aircraft will be hit by huge air currents, and the wind force that it will withstand will exceed the super typhoon. The red flag of daily use