grads用于画站点图

SPH 源代码，用于科研计算，是光滑粒子流体动力学-一种无网格粒子法书后的源代码(SPH source code, for scientific computing, is a smoothed particle hydrodynamics -- a source code after a meshless particle method.)

可用来计算直杆上一维热扩散问题，可以更改初值(Implicit scheme)

说明：  ls—dyna侵彻K文件，花岗岩的冲击模拟(LS-DYNA penetration K file, impact simulation of granite)

可以将旧版的Fortran77语言转换为新版的Fortran90，方便使用(A program to convert FORTRAN 77 source form to Fortran 90 source *)

飞机刹车时的PID程序，控制滑移率，保证不打滑(PID at the time of the aircraft braking procedures and control slip rates,guarantees of non-skid)

NSEG是美国兰利研究中心推出的飞行器起飞、爬升、巡航、加速、下降、减速和着陆等各个过程分析软件。(NSEG was developed to perform rapid aircraft mission analyses. It is based upon the use of approximate equations of motion whose form varies with the type of flight segment. Flight segments considered are takeoff, accelerations, climbs, cruises, descents, decelerations, and landings. Layered atmosphere options are available. The program can also be used for flight envelope mapping. NSEG provides the capability to analyze aircraft missions from low to hypersonic speeds. Realistic and detailed vehicle characteristics are input to NSEG to permit accurate mission analysis. NSEG allows engine scaling so as to fit the design under analysis. NSEG contains several approximate flight path optimization capabilities based on Rutowski energy-like criteria for considering minimum time or fuel flight segments and maximum range segments during climb or descent. Takeoff and landing analysis is based on the Air Force Flight Dynamics Laboratory DATCOM method of high lift aerodynamic modelling)

说明：  EGM2008球谐函数计算程序，展开到2160阶。(EGM2008 HarmonicSynthesissoftware)

PSCAD仿真环境下，单相PCS的VF模式(PSCAD simulation environment, the single-phase PCS VF mode)

先定义各个失效模式下的刚度矩阵，如基体拉伸失效就定义dagmatrix（nblock），按照你的退化方式用if语句判断，符合条件就把相应刚度赋予折减后的值(Define the stiffness matrix of each failure mode first, if the matrix tensile failure defines the dagmatrix (nblock), according to your degradation mode judged by if statement, accord with the conditions of the corresponding stiffness given reduced value)

GIVE THE WIND FARM SCIG INDCUTION GENERATOR Farm design and attached controls given in one file of PSCAD simulations that bcould be connected to other files