?? variabledefination.m
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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,計算馬赫數影響時用)
% ACL = Cl correction constant (升力系數修正因子)
% Azero = lift curve slope (升力線斜率)
% AF = Airfoil designator (integer) (翼型 ?)
% afname = airfoil designation (翼型 ?)
% AFds(i)= array of airfoil names (所選翼型序號)
% Ads = temporary register (暫存)
% AIRFOILNAME = name of airfoil used on the prop (所選翼型名號)
% Alpha(i,j) = angle of attack at Xi & Jj (進距比Jj時Xi處的攻角--rad)
% ALPHADEG(I,J) = angle of attack in degrees (進距比Jj時Xi處的攻角--degrees)
% ANS = input integer 'decision' varibles
% BCD = Cd correction constant (阻力系數修正因子)
% Beta(i) = blade angle at X(i) (DEG) (槳葉角--degrees)
% C(i) = chord at X(i) (INCHES) (弦長)
% CF = sine of angle phi (sin(φ))
% CL = lift coefficient (升力系數)
% CP(j) = Cp at J(j) (J(j)時功率系數)
% CT(j) = Ct at J(j) (J(j)時推力系數)
% COLS = number of columns in a matrix (矩陣列數)
% C0 = constant pi^3/8 (常數因子)
% C1, C2 = constants (常數)
% DQ(i,j) = d(CQ)/dX at X(i) and J(j) (進距比Jj時Xi處的d(CQ)/dX)
% DR = conversion, degrees to radians (度-- 變化-- 弧度)
% DT(i,j) = d(CT)/dX at X(i) and J(j) (進距比Jj時Xi處的d(CT)/dX)
% D1,D2 = temporary variables (暫時變量)
% ETA(j) = efficiency at j (進距比J時槳的效率)
% Fzero = thickness routine flag (厚度……標志)
% F1 = jmin flag (jmin標志)
% F2 = jmax flag (jmax標志)
% F3 = general flag ?
% F4 = change routine flag ?
% F5 = convergence flag (收斂?標志)
% F6 = airfoil selection input flag (翼型輸入標志)
% FX = input to subroutine (子程序輸入變量)
% FY = output from subroutine (子程序輸出變量)
% F(i,j) = matrix of spline fit coefficients (擬合系數)
% GP(i) = geometric pitch at X(i) (X(i)處的幾何螺距)
% H = altitude in thousands of feet (飛行高度--thousands of feet)
% I = counter or dummy variable (記數變量)
% II= row number in matrix (行號)
% ikey= logical unit identifier for keyboard (鍵盤設備號)
% imon= logical unit identifier for monitor (顯示器設備號)
% INPUTDATAFILE = file name for input data (輸入文件名)
% J, JJ = counter or dummy variable (記數變量)
% Jar(i) = advance ratio (進距比)
% Jmax = Advance ratio maximum (最大進距比)
% Jmin = Advance ratio minimum (最小進距比)
% Kgold = goldstein constant (goldstein常數)
% K(i,j) = array of goldstein constants (goldstein常數向量)
% KK=column number in matrix (矩陣列號)
% LDA = indicator of lift/drag adjustments (integer)
% =1 no CL/CD corrections
% =2 mach no. adjustments (glauert) (LDA=2馬赫數調整)
% =3 Re adjustment (LDA=3雷諾數調整)
% =4 mach and Re adjustment (LDA=4 馬赫數,雷諾數調整)
% MF = Conversion, MPH to FPS (英里/小時--英尺/秒)
% MPH = Miles per hour (飛行速度--Miles per hour)
% MT = mach number at tip (corrected for induced velocity) (槳尖馬赫數,經誘導速度修正后)
%C MTUC = mach number at tip uncorrected(槳尖馬赫數,經誘導速度修正前)
% 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(動黏度)
% PHI = angle of flow incident to blade(氣流角)
% PI= 3.14159....
% PROPNAME = string variable identifier for prop(螺旋槳名稱)
% Pn = 10^n; weird little variable used in rounding numbers
% R0-R8 = variables used in aerodynamic coefficient corrections
% Radius = propeller radius (inches)(直徑--inches)
% RA = indication of analysis refinement (integer)
% =1 simple blade element theory(計算方法標志,RA=1,用simple blade element theory)
% =2 include induced velocity(計算方法標志,RA=2,用include induced velocity)
% =3 include induced velocity and tip losses(計算方法標志,RA=2,用 include induced velocity and tip losses)
% RE(i,j) = Reynolds number(雷諾數矩陣)
% REAFD = Reynolds number of the airfoil data(翼型臨界雷諾數)
% RD = conversion, radians to degrees (弧度-- 變化-- 度)
% R(i) = radius inputs NONDIMENSIONAL(i.e.fraction of radius)(無量綱半徑輸入)
% RHO = atmospheric density(空氣密度)
% ROWS= number of rows in a matrix
% RPM = revolutions per minute(轉速-- revolutions per minute)
% S(i) = solidity at i ?
% SF = sine of angle phi(sin(φ))
% T(i) = thickness ratio at X(i) NONDIMENSIONAL(相對厚度)
% (i.e. thickness/local chord)
% Theta = induced angle of attack(誘導速度修正角)
% Ufixed = RPM - MPH indicator (integer)
% =1 MPH fixed
% =2 RPM fixed
% X(i) = % radial location
% Z(ijk) = table of airfoil aerodynamic coefficients(翼型氣動系數表)
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