Glossary

Term	Definition
Reference	The reference aircraft is a DLR interpretation of an existing/real aircraft type, based on publicly available data. This aircraft serves as the basis of comparison to identify the performance improvements (amongst others environmental and economical KPIs) of our concept aircraft to current technology.
Baseline	The baseline aircraft is an evolutionary update of the reference aircraft with an identical entry-into-service year as the future concept aircraft. The baseline includes technology updates stemming from DLR’s internal technology roadmaps.
Future Concept	The future concept aircraft is a potential configuration that uses revolutionary technologies, designed to enter into service from 2035 onwards.

Term	Definition
Entry into Service	Year in which this aircraft type is expected to enter operational service.
Passengers	Design passenger capacity – the maximum number of passengers for which the aircraft is designed.
Range	Design range in kilometers. This is the maximum distance the aircraft can fly under typical conditions with a representative payload.
Wing Span	The distance from the tip of one wing to the tip of the opposite wing.
Maximum Take-Off Mass	Maximum mass of the aircraft during take-off.
Cruise Mach Number	Design Mach number during cruise. Mach number is the ratio of cruise speed to the speed of sound.
Cruise Speed	The speed at which the aircraft travels during the cruise phase of flight.
Energy Carrier	Type of energy source used by the aircraft, e.g. synthetic kerosene, hydrogen, battery, etc.
Energy Consumption	Energy consumption per passenger per 100 kilometers, measured in kWh/pax/100km.
Total Installed Power	Total installed power of all propulsion units combined, measured in Mega-Watts (MW).