fuselage_desig: - add mass estimation of emergency slides

fuselage_design/fuselage_design_lib/accommodation_definitions.xml

@@ -571,6 +571,23 @@
 					<unit>kg</unit>
 				</mass>
 			</slide>
+			<slide id="2" description="Description of the emergency slide.">
+				<name description="Name of the emergency slide.">
+					<value>OWE_slide</value>
+				</name>
+				<length description="Length of the emergency slide.">
+					<value>700</value>
+					<unit>inch</unit>
+				</length>
+				<width description="Width of the emergency slide.">
+					<value>100</value>
+					<unit>inch</unit>
+				</width>
+				<mass description="Empty mass of the emergency slide..">
+					<value>140</value>
+					<unit>kg</unit>
+				</mass>
+			</slide>
 	</emergency_slides>
 	<cabin_interior_masses description="Description of different cabin interior masses.">
 		<acoustic_and_thermal_insolation description="Mass of cabin floor covering in kg per m^2.">