关键技术在155毫米榴弹炮发射药及装药技术的研究中,其关键技术主要有: 棒状发射药技术在尽可能采用制式发射药的配方及经典的弹道概念的前提下,发射药的选择对提高初速、增加射程具有重要作用。故从80年代初起,美国陆军开展了一系列高渐增性、高密度发射装药概念的研制工作,并提出了四种不同外形的棒状发射药。 The key technologies in the 155 mm howitzer propellant and drug technology research, the key technologies are: stick propellant technology as far as possible using standard projectile formula and the classic ballistic concept under the premise of the choice of propellant to improve Speed, increase the range has an important role. Therefore, starting from the early 1980s, the United States Army carried out a series of research work on the concept of high ascending and high-density launch chargers and proposed four different types of stick-shaped projectiles.