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📄 variabledefination.m

📁 用MATLAB编写关于飞机设计的matlab程序
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      subroutine propeller(altitude, Radius,Jar,CP,CT)


%	*****  Program  NDProp *****
%
%	Adaptation of the program
%	'Propeller 1.2.3' by Barry Young
%
%	***  Variable Usage   ***
%
%	A,Acousvel = speed of sound                                      (音速,计算马赫数影响时用)
%	ACL = Cl correction constant                                     (升力系数修正因子)
%	Azero = lift curve slope                                         (升力线斜率)
%	AF = Airfoil designator (integer)                                (翼型  ?)
%	afname = airfoil designation                                     (翼型  ?)
%	AFds(i)= array of airfoil names                                  (所选翼型序号)
%	Ads = temporary register                                         (暂存)
%	AIRFOILNAME = name of airfoil used on the prop                   (所选翼型名号)
%	Alpha(i,j) = angle of attack at Xi & Jj                          (进距比Jj时Xi处的攻角--rad)
%	ALPHADEG(I,J) = angle of attack in degrees                       (进距比Jj时Xi处的攻角--degrees)
%	ANS = input integer 'decision' varibles
%	BCD = Cd correction constant                                     (阻力系数修正因子)
%	Beta(i) = blade angle at X(i) (DEG)                              (桨叶角--degrees)
%	C(i) = chord at X(i) (INCHES)                                    (弦长)
%	CF = sine of angle phi                                           (sin(φ))
%	CL = lift coefficient                                            (升力系数)
%	CP(j) = Cp at J(j)                                               (J(j)时功率系数)
%	CT(j) = Ct at J(j)                                               (J(j)时推力系数)
%	COLS = number of columns in a matrix                             (矩阵列数)
%	C0 = constant pi^3/8                                             (常数因子)
%	C1, C2 = constants                                               (常数)
%	DQ(i,j) = d(CQ)/dX at X(i) and J(j)                              (进距比Jj时Xi处的d(CQ)/dX)
%	DR = conversion, degrees to radians                              (度-- 变化-- 弧度)
%	DT(i,j) = d(CT)/dX at X(i) and J(j)                              (进距比Jj时Xi处的d(CT)/dX)
%	D1,D2 = temporary variables                                      (暂时变量)
%	ETA(j) = efficiency at j                                         (进距比J时桨的效率)
%	Fzero = thickness routine flag                                   (厚度……标志)
%	F1 = jmin flag                                                   (jmin标志)
%	F2 = jmax flag                                                   (jmax标志)
%	F3 = general flag                                                  ?
%	F4 = change routine flag                                           ?
% 	F5 = convergence flag                                             (收敛?标志)
%	F6 = airfoil selection input flag                                 (翼型输入标志)
%	FX = input to subroutine                                          (子程序输入变量)
%	FY = output from subroutine                                       (子程序输出变量)
%	F(i,j) = matrix of spline fit coefficients                        (拟合系数)
%	GP(i) = geometric pitch at X(i)                                   (X(i)处的几何螺距)
%	H = altitude in thousands of feet                                 (飞行高度--thousands of feet)
%	I = counter or dummy variable                                     (记数变量)
%	II= row number in matrix                                          (行号)
%	ikey= logical unit identifier for keyboard                        (键盘设备号)      
%	imon= logical unit identifier for monitor                         (显示器设备号)        
%	INPUTDATAFILE = file name for input data                          (输入文件名)
%	J, JJ = counter or dummy variable                                 (记数变量)
%	Jar(i) = advance ratio                                            (进距比)
%	Jmax = Advance ratio maximum                                      (最大进距比)
%	Jmin = Advance ratio minimum                                      (最小进距比)
%	Kgold = goldstein constant                                        (goldstein常数)
%	K(i,j) = array of goldstein constants                             (goldstein常数向量)
% 	KK=column number in matrix                                        (矩阵列号)
% 	LDA = indicator of lift/drag adjustments (integer) 
%		=1  no CL/CD corrections
%		=2  mach no. adjustments (glauert)                        (LDA=2马赫数调整)
%		=3  Re adjustment                                         (LDA=3雷诺数调整)
%		=4  mach and Re adjustment                                (LDA=4 马赫数,雷诺数调整)
%	MF = Conversion, MPH to FPS                                       (英里/小时--英尺/秒)
%	MPH = Miles per hour                                              (飞行速度--Miles per hour)
%	MT = mach number at tip (corrected for induced velocity)          (桨尖马赫数,经诱导速度修正后)
%C	MTUC = mach number at tip uncorrected(桨尖马赫数,经诱导速度修正前)
%	N0= mach/reynolds number correction flag
%	N = number of radial data points
%	NB = number of blades
%	NAIRFOILS = number of airfoils in the AIRFOIL data file
%	NU = Kinematic viscosity(动黏度)
%	PHI = angle of flow incident to blade(气流角)
%	PI= 3.14159....
%	PROPNAME = string variable identifier for prop(螺旋桨名称)
%	Pn = 10^n; weird little variable used in rounding numbers
%	R0-R8 = variables used in aerodynamic coefficient corrections
%	Radius = propeller radius (inches)(直径--inches)
%	RA = indication of analysis refinement (integer)
%		=1  simple blade element theory(计算方法标志,RA=1,用simple blade element theory)
%		=2  include induced velocity(计算方法标志,RA=2,用include induced velocity)
%		=3  include induced velocity and tip losses(计算方法标志,RA=2,用 include induced velocity and tip losses)
%	RE(i,j) = Reynolds number(雷诺数矩阵)
%	REAFD = Reynolds number of the airfoil data(翼型临界雷诺数)
%	RD = conversion, radians to degrees	(弧度-- 变化-- 度)
%	R(i) = radius inputs NONDIMENSIONAL(i.e.fraction of radius)(无量纲半径输入)
%	RHO = atmospheric density(空气密度)
%	ROWS= number of rows in a matrix
%	RPM = revolutions per minute(转速--  revolutions per minute)
%	S(i) = solidity at i       ?
%	SF = sine of angle phi(sin(φ))
%	T(i) = thickness ratio at X(i) NONDIMENSIONAL(相对厚度)
%		(i.e. thickness/local chord)
%	Theta = induced angle of attack(诱导速度修正角)
%	Ufixed = RPM - MPH indicator (integer)
%           =1 MPH fixed
%           =2 RPM fixed
%	X(i) = % radial location
%	Z(ijk) = table of airfoil aerodynamic coefficients(翼型气动系数表)

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