Approach to the Weight Estimation in the Conceptual Design of Hybrid-Electric-Powered Unconventional Regional Aircraft

Table 1

Mission requirements and relevant parameters.

Parameter	Symbol	Unit	Value
Range	R	nmi	900
Payload	P		100
Crew	Cr		5
Cruise Mach	M	-	0.5
Altitude	h	ft	25000
Reference surface			326.03
Total span	b	m	32.45
Total length	l	m	27.85
Aerodynamic efficiency (cruise)		-	19.0
Fuel consumption (cruise)	BSFC		211.0
Thermal chain efficiency (cruise)		-	0.35
Propeller efficiency (cruise)		-	0.90
Fuel specific energy			12.08