Adapt default AR

For the new reference aircraft, the default setting for the aspect ratio is changed from 10.3 to 9.5

wing_design/wing_design_conf.xml

@@ -147,7 +147,7 @@
 						<parameters description="Mode parameters">
 							<mode_0 description="user_defined">
 								<aspect_ratio description="user aspect ratio">
-									<value>10.3</value>
+									<value>9.5</value>
 									<unit>1</unit>
 									<lower_boundary>6</lower_boundary>
 									<upper_boundary>20</upper_boundary>