Improving The High Altitude Performance of Tail -Controlled Endoatmospheric Missiles
Improving The High Altitude Performance of Tail -Controlled Endoatmospheric Missiles
复制标题
提高尾控大气层导弹的高空性能
DOI：
10.2514/6.2002-4770
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Joel Alpert
中科院分区：
文献类型：
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作者：
P. Zarchan;E. Greenberg;Joel Alpert
研究表明，无论采用比例导引还是采用最优制导，尾控气动导弹在高空飞行时，由于机身传递函数中存在低频右半平面零点，其性能都会下降。通过数值计算，提出了一种考虑机身零点的新制导律，并证明了其在较高高度具有优于现有制导律的性能。虽然没有给出导引律的闭合解，但在现有的机载飞控计算机中，导引律控制域的结果数值可以很容易地以多维表的形式存储。给出了两种计算制导律控制增益的方法。背景大气内拦截导弹最初是针对飞机威胁而设计的。由于最大威胁高度是由空气动力学决定的，导弹的设计不会远远高于有人驾驶飞机的高度限制。海湾战争表明，战术弹道导弹威胁也很重要。无意中的螺旋上升使这些威胁很难被追捕的拦截者击中。由于螺旋现象发生在密度较高的大气中，因此可以通过尝试在较高的a高度(即，在螺旋现象发生之前)进行拦截来避免螺旋状威胁。然而，超高空拦截给尾控大气层内拦截器带来了新的问题。问题
It is demonstrated that at high altitude the performan ce of a tail -controlled aerodynamic missile can degrade because of the existence of low frequency right-half plane zeroes in the airframe transfer function when either proportional navigation or optimal guidance is used. A new guidance law that accounts f or the airframe zeroes is developed numerically and shown to have superior performance to existing guidance laws at the higher altitudes. Although no closed -form solution for the guidance law is presented, the resultant numerical values for the control ga ins of the guidance law can easily be stored as a multidimensional table in existing on -board flight control computers. Two methodologies for computing the guidance law control gains are presented. Background Endoatmospheric interceptor missiles were originally designed against aircraft threats. Since the maximum threat altitude was governed by aerodynamics, missiles were not designed to operate much above the altitude limits of piloted aircraft. The Gulf War has shown that tactical ballistic mi ssile threats are also important. Unintentional spiraling made these threats difficult to hit by the pursuing interceptor. Since spiraling occurs in the more dense atmosphere one can avoid the spiraling threats by trying to perform intercepts at higher a ltitudes (i.e., before spiraling occurs). However, very high altitude intercepts cause new problems for tail -controlled endoatmospheric interceptors. Problem