With the continuous emergence of new weapons, backward weapons will inevitably be eliminated. The disposal of retired weapons and equipment is a very important issue for the armed forces of all countries. Because these weapons and equipment not only have lethality, but also contain the core military technology secrets of various countries, which can not be simply handed over to private institutions. In particular, military aircraft with many advanced technologies should be treated with caution. < / P > < p > so far, the armed forces of all countries have not found a completely safe way to deal with retired military aircraft. At present, there are three ways to deal with it. < / P > < p > the simplest thing is to dismantle and recycle valuable parts. Britain usually dismembers retired military aircraft, in which useful parts are either sold to make money, or directly installed in active combat aircraft to save military expenses. When Germany eliminated a batch of C-160 military transport aircraft, it directly used excavators to disassemble the C-160 into small pieces and transport it away for recycling. This simple and direct approach was also used by Ukraine to demolish the Tu-160 strategic bomber. < / P > < p > it should be noted that it is not easy to dismantle the scrapped aircraft. Cutting the aircraft body not only requires a lot of manpower and mechanical costs, but also in order to prevent the aircraft body from rusting or corroding and polluting the environment, the aircraft debris must be stored under specific temperature and humidity conditions. Strict environmental monitoring should be carried out for some aircraft that have carried nuclear bombs or participated in nuclear tests to prevent accidents. Of course, aircraft use high-quality metal materials, or they can be used as raw materials for new products or used in national economic construction. < / P > < p > the second is to seal and wait for the second use or reprocessing in the future. This is a common way of handling in the United States. There are several “graveyards” in the United States, where a large number of old fighters are parked, especially the Davis mount Air Force Base in Tucson, Arizona. This is the largest retired aircraft storage yard with the largest area and the largest number of aircraft in the world. There are about 4000 retired aircraft, covering about 70 aircraft models. Among them, the more famous are A-10 attack aircraft, F-14, F-15 and F-111 fighters. During the cold war, 300 B-52 strategic bombers were destroyed here, also known as “aircraft cemetery”. In fact, the official name of the base is “U.S. aerospace maintenance and regeneration center”. After the U.S. retired aircraft arrive, the center will conduct a comprehensive “physical examination” for the aircraft, and the test results will be recorded. The gun, ejection device and other important and dangerous parts of the aircraft will be removed and preserved, the fuel will be exhausted, and the engine air inlet and nozzle will be sealed. In addition, the cockpit and cabin door of the aircraft will be sealed, and the fuselage will be sprayed with protective film to prevent the fuselage and its electronic components from being corroded by harsh environment and damaged by animals. In theory, these treated military aircraft can be put into use again. < / P > < p > the third is refit and reuse. After the end of the Second World War, a large number of us transport aircraft were converted to civilian use and began to play a role in new fields. Chinese scientific research institutions have combined the turbojet-6 engine used by J-6 fighter with the chassis of type 59 tank to produce a snow sweeper with superior performance crawler type turbojet snowmobile. This kind of snowblower can easily remove snow and ice by using the nearly ten level wind force and high temperature generated by the turbojet engine. The tracked chassis of the tank also greatly enhances the trafficability of this type of snowblower in snow, mountain and other environments.