diff options
| -rw-r--r-- | creator.py | 31 | ||||
| -rw-r--r-- | evaluator.py | 31 | ||||
| -rw-r--r-- | generator.py | 20 | ||||
| -rw-r--r-- | main.py | 14 |
4 files changed, 81 insertions, 15 deletions
@@ -221,8 +221,8 @@ class Airfoil(Coordinates): def info_print(self, round): super().info_print(round) - print('x_c the camber x-coordinates:\n', np.around(self.x, round)) - print('z_c the camber z-coordinates:\n', np.around(self.x, round)) + print('x_c the camber x-coordinates:\n', np.around(self.x_c, round)) + print('z_c the camber z-coordinates:\n', np.around(self.z_c, round)) return None @@ -237,6 +237,10 @@ class Spar(Coordinates): self.thickness = float() self.z_start = [] self.z_end = [] + self.dx = float() + self.dz = float() + self.dP_x = float() + self.dP_z = float() def add_coord(self, airfoil, x_loc_percent): ''' @@ -274,15 +278,15 @@ class Spar(Coordinates): self.mass = len(self.x) * mass return None - def add_webs(self, skin_thickness): + def add_webs(self, thickness): '''Add webs to spars.''' for _ in range(len(self.x)): self.x_start.append(self.x[_][0]) self.x_end.append(self.x[_][1]) - self.thickness = skin_thickness self.z_start.append(self.z[_][0]) self.z_end.append(self.z[_][1]) + self.thickness = thickness return None @@ -292,7 +296,16 @@ class Stringer(Coordinates): def __init__(self): super().__init__(parent.chord, parent.semi_span) + self.x_start = [] + self.x_end = [] + self.thickness = float() + self.z_start = [] + self.z_end = [] self.area = float() + # self.dx = float() + # self.dz = float() + # self.dP_x = float() + # self.dP_z = float() def add_coord(self, airfoil, stringer_u_1, stringer_u_2, @@ -364,7 +377,15 @@ class Stringer(Coordinates): return None def add_webs(self, thickness): - pass + '''Add webs to stringers.''' + + for _ in range(len(self.x) // 2): + self.x_start.append(self.x[_]) + self.x_end.append(self.x[_ + 1]) + self.z_start.append(self.z[_]) + self.z_end.append(self.z[_ + 1]) + self.thickness = thickness + return None def info_print(self, round): super().info_print(round) diff --git a/evaluator.py b/evaluator.py index c2429d1..05900e9 100644 --- a/evaluator.py +++ b/evaluator.py @@ -76,6 +76,8 @@ class Evaluator: print('I_x:\n', np.around(self.I_[0], 3)) print('I_z:\n', np.around(self.I_[1], 3)) print('I_xz:\n', np.around(self.I_[2], 3)) + print('Spar dP_x:\n', self.spar.dP_x) + print('Spar dP_z:\n', self.spar.dP_z) print(num_of_dashes * '-') print('Rectangular lift along semi-span:\n', np.around(self.lift_rectangular, round)) @@ -113,7 +115,8 @@ class Evaluator: return L_prime def get_lift_elliptical(self, L_0): - L_prime = [L_0 * sqrt(1 - (y / self.semi_span) ** 2) + L_prime = [L_0 / (self.semi_span * 2) + * sqrt(1 - (y / self.semi_span) ** 2) for y in range(self.semi_span)] return L_prime @@ -196,18 +199,40 @@ class Evaluator: return(I_x, I_z, I_xz) - def analysis(self): + def analysis(self, V_x, V_z): '''Perform all analysis calculations and store in class instance.''' + def get_dp(xDist, zDist, V_x, V_z, I_x, I_z, I_xz, area): + denom = float(I_x * I_z - I_xz ** 2) + z = float() + for _ in range(len(xDist)): + z += float(- area * xDist[_] * (I_x * V_x - I_xz * V_z) + / denom + - area * zDist[_] * (I_z * V_z - I_xz * V_x) + / denom) + return z + + def get_dx(component): + return [x - self.centroid[0] for x in component.x_start] + + def get_dz(component): + return [x - self.centroid[1] for x in component.x_start] + self.drag = self.get_drag(10) - self.lift_rectangular = self.get_lift_rectangular(1000) + self.lift_rectangular = self.get_lift_rectangular(13.7) self.lift_elliptical = self.get_lift_elliptical(15) self.lift_total = self.get_lift_total() self.mass_dist = self.get_mass_distribution(self.mass_total) self.centroid = self.get_centroid() self.I_ = self.get_inertia_terms() + self.spar.dP_x = get_dp(get_dx(self.spar), get_dz(self.spar), V_x, 0, + self.I_[0], self.I_[1], self.I_[2], + self.spar.cap_area) + self.spar.dP_z = get_dp(get_dx(self.spar), get_dz(self.spar), 0, V_z, + self.I_[0], self.I_[1], self.I_[2], + self.spar.cap_area) return None diff --git a/generator.py b/generator.py index 6a87b7e..7ad2cf3 100644 --- a/generator.py +++ b/generator.py @@ -14,3 +14,23 @@ # along with this program. If not, see <https://www.gnu.org/licenses/>. import creator + + +class Population: + '''Collection of random airfoils.''' + + def __init__(self, size): + self.size = size + self.gen_number = 0 # incremented for every generation + + def mutate(self, prob_mt): + '''Randomly mutate the genes of prob_mt % of the population.''' + + def crossover(self, prob_cx): + '''Combine the genes of prob_cx % of the population.''' + + def reproduce(self, prob_rp): + '''Pass on the genes of the fittest prob_rp % of the population.''' + + def fitness(): + '''Rate the fitness of an individual on a relative scale (0-100)''' @@ -70,7 +70,7 @@ def main(): # Define NACA airfoil coordinates and mass af.add_naca(NACA_NUM) af.add_mass(AIRFOIL_MASS) - # af.info_print(2) + af.info_print(2) af.info_save(SAVE_PATH, _) # Create spar instance @@ -82,7 +82,7 @@ def main(): af.spar.add_spar_caps(SPAR_CAP_AREA) af.spar.add_mass(SPAR_MASS) af.spar.add_webs(SPAR_THICKNESS) - # af.spar.info_print(2) + af.spar.info_print(2) af.spar.info_save(SAVE_PATH, _) # Create stringer instance @@ -96,20 +96,20 @@ def main(): af.stringer.add_area(STRINGER_AREA) af.stringer.add_mass(STRINGER_MASS) af.stringer.add_webs(SKIN_THICKNESS) - # af.stringer.info_print(2) + af.stringer.info_print(2) af.stringer.info_save(SAVE_PATH, _) # Plot components with matplotlib - # creator.plot_geom(af) + creator.plot_geom(af) # Evaluator object contains airfoil analysis results. eval = evaluator.Evaluator(af) # The analysis is performed in the evaluator.py module. - eval.analysis() - # eval.info_print(2) + eval.analysis(1, 1) + eval.info_print(2) eval.info_save(SAVE_PATH, _) evaluator.plot_geom(eval) - # evaluator.plot_lift(eval) + evaluator.plot_lift(eval) # Print final execution time print("--- %s seconds ---" % (time.time() - start_time)) |