p1: fig

p1/specific_energy_comparison.py

@@ -79,29 +79,29 @@ class LaunchSite:
 # 预定义的发射场
 LAUNCH_SITES = {
     # 赤道参考
-    '赤道': LaunchSite("Equator (参考)", 0.0),
+    '赤道': LaunchSite("Equator", 0.0),
     
     # 法属圭亚那 (接近赤道)
-    'Kourou': LaunchSite("Kourou (French Guiana)", 5.2),
+    'Kourou': LaunchSite("French Guiana", 5.2),
     
     # 印度
-    'SDSC': LaunchSite("Satish Dhawan (India)", 13.7),
+    'SDSC': LaunchSite("Satish Dhawan", 13.7),
     
     # 美国
-    'Texas': LaunchSite("Boca Chica (Texas)", 26.0),
-    'Florida': LaunchSite("Cape Canaveral (Florida)", 28.5),
-    'California': LaunchSite("Vandenberg (California)", 34.7),
-    'Virginia': LaunchSite("Wallops (Virginia)", 37.8),
-    'Alaska': LaunchSite("Kodiak (Alaska)", 57.4),
+    'Texas': LaunchSite("Texas", 26.0),
+    'Florida': LaunchSite("Florida", 28.5),
+    'California': LaunchSite("California", 34.7),
+    'Virginia': LaunchSite("Virginia", 37.8),
+    'Alaska': LaunchSite("Alaska", 57.4),
     
     # 中国
-    'Taiyuan': LaunchSite("Taiyuan (China)", 38.8),
+    'Taiyuan': LaunchSite("Taiyuan", 38.8),
     
     # 新西兰
-    'Mahia': LaunchSite("Mahia (New Zealand)", -39.3),  # 南半球
+    'Mahia': LaunchSite("Mahia", -39.3),  # 南半球
     
     # 哈萨克斯坦
-    'Baikonur': LaunchSite("Baikonur (Kazakhstan)", 45.6),
+    'Baikonur': LaunchSite("Kazakhstan", 45.6),
 }
 
 
@@ -535,8 +535,12 @@ def plot_latitude_effects(
         mission_plot = mission
         title_suffix = " (Target: Equatorial Orbit)"
     
-    # Golden ratio aspect: width=10, height=10*0.618
-    fig, ax = plt.subplots(figsize=(10, 10 * 0.618))
+    # Golden ratio aspect: 缩小尺寸使字体相对更大
+    fig, ax = plt.subplots(figsize=(8, 8 * 0.618))
+    
+    # 中低饱和度配色
+    color_curve = '#52796F'      # 暗绿色 - 曲线
+    color_point = '#8E7B9A'      # 灰紫色 - 数据点
     
     # Continuous latitude range
     latitudes = np.linspace(0, 65, 100)
@@ -549,29 +553,32 @@ def plot_latitude_effects(
         fuel_ratios.append(result['fuel_ratio'])
     
     # Plot continuous curve
-    ax.plot(latitudes, fuel_ratios, 'g-', linewidth=2, label='Fuel Ratio vs Latitude')
+    ax.plot(latitudes, fuel_ratios, color=color_curve, linewidth=2, label='Fuel Ratio vs Latitude')
     
     # Mark launch sites with custom offsets to avoid overlap with curve
     # Offsets: (x, y) in points - positive y moves text up, positive x moves right
+    # 纬度参考: Equator(0), French Guiana(5.2), Satish Dhawan(13.7), Texas(26), 
+    #          Florida(28.5), California(34.7), Virginia(37.8), Taiyuan(38.8), 
+    #          Mahia(39.3), Kazakhstan(45.6), Alaska(57.4)
     label_offsets = {
         '赤道': (5, -15),          # Below curve
-        'Kourou': (5, 8),          # Above curve
-        'SDSC': (5, -15),          # Below curve
-        'Texas': (-50, 8),         # Left and above
-        'Florida': (5, 8),         # Above curve
-        'California': (-60, -8),   # Left
-        'Virginia': (5, 8),        # Above curve
-        'Taiyuan': (-45, -12),     # Left and below
-        'Mahia': (5, 8),           # Above curve
-        'Alaska': (5, -15),        # Below curve
-        'Baikonur': (5, 8),        # Above curve
+        'Kourou': (-75, 15),       # Left above (French Guiana)
+        'SDSC': (8, -15),          # Below right (Satish Dhawan)
+        'Texas': (-38, -15),       # Left below
+        'Florida': (8, -15),       # Right below
+        'California': (8, -15),    # Right below
+        'Virginia': (8, 12),       # Right above
+        'Taiyuan': (-52, 12),      # Left above (避开California)
+        'Mahia': (8, -18),         # Right below
+        'Alaska': (8, 8),          # Right above
+        'Baikonur': (8, 8),        # Right above (Kazakhstan)
     }
     
     for name, site in LAUNCH_SITES.items():
         abs_lat = abs(site.latitude)
         site_temp = LaunchSite(site.name, abs_lat)
         result = ground_launch_specific_energy_with_latitude(engine, mission_plot, site_temp, constants)
-        ax.plot(abs_lat, result['fuel_ratio'], 'mo', markersize=8)
+        ax.plot(abs_lat, result['fuel_ratio'], 'o', color=color_point, markersize=8)
         # Simplified label
         label = site.name.split('(')[0].strip()
         # Get custom offset for this site, default to (5, 8)
@@ -583,7 +590,7 @@ def plot_latitude_effects(
     ax.set_ylabel('Fuel / Payload Mass Ratio', fontsize=12)
     # ax.set_title(f'Fuel Requirement vs Launch Latitude{title_suffix}', fontsize=13)
     ax.grid(True, alpha=0.3)
-    ax.set_xlim(0, 65)
+    ax.set_xlim(-2, 65)
     
     plt.tight_layout()
     plt.savefig(save_path, dpi=150, bbox_inches='tight')