Coverage for /opt/hostedtoolcache/Python/3.11.9/x64/lib/python3.11/site-packages/hypervehicle/hangar/hifire4.py: 92%

1import numpy as np 

2from hypervehicle import Vehicle 

3from hypervehicle.generator import Generator 

4from hypervehicle.components import Wing, Fin, RevolvedComponent, common 

5from hypervehicle.geometry import Vector3, Line, Polyline, Arc 

6 

7 

8class ParametricHIFiRE4(Generator): 

9 """Parametric generator for mock-up of the HIFiRE 4. 

10 

11 Dimensions have been approximated based on vehicle's visual proportions. 

12 

13 References 

14 ---------- 

15 https://arc.aiaa.org/doi/10.2514/6.2011-2275 

16 """ 

17 

18 def __init__(self, **kwargs) -> None: 

19 # Vehicle parameters 

20 self.x_curve_mult = 0.3 

21 self.y_curve_mult = 0.5 

22 self.R = 0.2 

23 self.L_n = 2 

24 self.L_b = 4 

25 

26 # Complete instantiation 

27 super().__init__(**kwargs) 

28 

29 def create_instance(self) -> Vehicle: 

30 # Initialise 

31 hifire4 = Vehicle() 

32 hifire4.configure( 

33 name="HIFiRE4", 

34 verbosity=1, 

35 ) 

36 

37 L_t = self.L_n + self.L_b 

38 

39 # Construct tangent ogive nose 

40 # -------------------------------------------------- 

41 rho = (self.R**2 + self.L_n**2) / (2 * self.R) 

42 y_o = lambda x: round(np.sqrt(rho**2 - (self.L_n - x) ** 2) + self.R - rho, 6) 

43 a_o = Vector3(x=0, y=0) 

44 b_o = Vector3(x=-self.L_n, y=y_o(self.L_n)) 

45 c_o = Vector3(x=b_o.x, y=b_o.y - rho) 

46 ogive_arc = Arc(a_o, b_o, c_o) 

47 

48 # Construct body 

49 b0 = b_o 

50 b1 = b0 - Vector3(x=self.L_b, y=0) 

51 b2 = b1 - Vector3(x=0, y=self.R) 

52 bL1 = Line(b0, b1) 

53 bL2 = Line(b1, b2) 

54 

55 # Construct fuselage Polyline 

56 fuseline = Polyline([ogive_arc, bL1, bL2]) 

57 

58 # Construct curvature functions 

59 def curv_x(x, y): 

60 "Curvature in x-direction (about y-axis)" 

61 return self.x_curve_mult * 0.05 * x**2 

62 

63 def curv_xd(x, y): 

64 return self.x_curve_mult * 0.05 * 2 * x 

65 

66 def curv_y(x, y): 

67 "Curvature in y-direction (about x-axis)" 

68 return self.y_curve_mult * 0.1 * y**2 

69 

70 def curv_yd(x, y): 

71 return self.y_curve_mult * 0.1 * 2 * y 

72 

73 # Create curvature operations chain 

74 curvatures = [("x", curv_x, curv_xd), ("y", curv_y, curv_yd)] 

75 

76 fuselage = RevolvedComponent( 

77 revolve_line=fuseline, 

78 stl_resolution=20, 

79 ) 

80 

81 # Create wing body 

82 # -------------------------------------------------- 

83 # --- |---B0------________________B1 

84 # | | | ----____ 

85 # | | | ----_____ 

86 # | | | --____B2 

87 # --- |---A0----------------------A1----------------------TT 

88 # 

89 # |------------------- wing_L ---------------------| 

90 

91 wing_L = 0.8 * L_t 

92 wing_thickness = 0.25 * self.R 

93 wing_span = 3.5 * self.R 

94 flap_length = 0.1 * L_t 

95 flap_angle = 0 

96 wing_LE_shift = Vector3(x=0.3, y=0) 

97 

98 # Required points 

99 A0 = a_o - Vector3(x=wing_L, y=0) 

100 A1 = Vector3(x=A0.x + 0.5 * wing_L, y=0) 

101 TT = Vector3(x=A0.x + wing_L, y=0) - wing_LE_shift 

102 B0 = Vector3(x=A0.x, y=wing_span) 

103 

104 # Construction points 

105 B1 = Vector3(x=A1.x, y=0.95 * B0.y) 

106 B2 = Vector3(x=TT.x, y=0.15 * wing_span) 

107 

108 # Leading edge line 

109 B0B1 = Line(p0=B0, p1=B1) 

110 B1B2 = Line(p0=B1, p1=B2) 

111 B2TT = Line(p0=B2, p1=TT) 

112 Line_B0TT = Polyline([B0B1, B1B2, B2TT]) 

113 

114 wing = Wing( 

115 A0=A0, 

116 A1=A1, 

117 TT=TT, 

118 B0=B0, 

119 Line_B0TT=Line_B0TT, 

120 top_tf=common.uniform_thickness_function(wing_thickness, "top"), 

121 bot_tf=common.uniform_thickness_function(wing_thickness, "bot"), 

122 flap_length=flap_length, 

123 flap_angle=np.deg2rad(flap_angle), 

124 stl_resolution=3, 

125 ) 

126 

127 # Create fins 

128 # -------------------------------------------------- 

129 # |--p1-----p2 

130 # | | \ 

131 # | | \ 

132 # | | \ 

133 # |--p0______________p3 

134 

135 fin_height = self.R 

136 fin_thickness = wing_thickness 

137 fin_length = 0.2 * wing_L 

138 

139 p0 = A0 - Vector3(x=flap_length, y=0) 

140 p1 = p0 + Vector3(x=0, y=fin_height) 

141 p2 = p1 + Vector3(x=0.5 * fin_length, y=-0.5 * fin_height) 

142 p3 = p0 + Vector3(x=fin_length, y=0) 

143 

144 # Modifty each point for curvature 

145 p0 += Vector3(x=0, y=-curv_x(p0.x, p0.y)) 

146 p1 += Vector3(x=0, y=-curv_x(p1.x, p1.y)) 

147 p2 += Vector3(x=0, y=-curv_x(p2.x, p2.y)) 

148 p3 += Vector3(x=0, y=-curv_x(p3.x, p3.y)) 

149 

150 # Add fins 

151 offset1 = lambda x, y, z: Vector3(x=0, y=wing_span) 

152 offset2 = lambda x, y, z: Vector3(x=0, y=-wing_span) 

153 offset3 = lambda x, y, z: Vector3(x=0, y=0, z=-0.95 * self.R) 

154 stl_res = 3 

155 fin1 = Fin( 

156 p0=p0, 

157 p1=p1, 

158 p2=p2, 

159 p3=p3, 

160 offset_func=offset1, 

161 fin_thickness=fin_thickness, 

162 fin_angle=np.deg2rad(-90), 

163 top_thickness_function=common.uniform_thickness_function( 

164 fin_thickness, "top" 

165 ), 

166 bot_thickness_function=common.uniform_thickness_function( 

167 fin_thickness, "bot" 

168 ), 

169 rudder_type="sharp", 

170 rudder_length=fin_thickness, 

171 stl_resolution=stl_res, 

172 ) 

173 fin2 = Fin( 

174 p0=p0, 

175 p1=p1, 

176 p2=p2, 

177 p3=p3, 

178 offset_func=offset2, 

179 fin_thickness=fin_thickness, 

180 fin_angle=np.deg2rad(-90), 

181 top_thickness_function=common.uniform_thickness_function( 

182 fin_thickness, "top" 

183 ), 

184 bot_thickness_function=common.uniform_thickness_function( 

185 fin_thickness, "bot" 

186 ), 

187 rudder_type="sharp", 

188 rudder_length=fin_thickness, 

189 stl_resolution=stl_res, 

190 ) 

191 fin3 = Fin( 

192 p0=p0, 

193 p1=p1, 

194 p2=p2, 

195 p3=p3, 

196 offset_func=offset3, 

197 fin_thickness=fin_thickness, 

198 fin_angle=np.deg2rad(-90), 

199 top_thickness_function=common.uniform_thickness_function( 

200 fin_thickness, "top" 

201 ), 

202 bot_thickness_function=common.uniform_thickness_function( 

203 fin_thickness, "bot" 

204 ), 

205 rudder_type="sharp", 

206 rudder_length=fin_thickness, 

207 stl_resolution=stl_res, 

208 ) 

209 

210 # Add components 

211 hifire4.add_component( 

212 fuselage, 

213 curvatures=curvatures, 

214 ) 

215 hifire4.add_component( 

216 wing, 

217 reflection_axis="y", 

218 curvatures=curvatures, 

219 ) 

220 hifire4.add_component(fin1) 

221 hifire4.add_component(fin2) 

222 hifire4.add_component(fin3) 

223 

224 return hifire4 

225 

226 

227if __name__ == "__main__": 

228 # To create the nominal geometry 

229 parametric_generator = ParametricHIFiRE4() 

230 hifire4 = parametric_generator.create_instance() 

231 hifire4.generate() 

232 hifire4.to_stl("hifire4")