Survivability enhanced by armor allocated to protect pilot / crewspaces and / or critical operating systems.
Incorporates two or more engines, enhancing survivability and / or performance.
Inherent ability of airframe to take considerable damage.
Can accelerate to higher speeds than average aircraft of its time.
Can reach and operate at higher altitudes than average aircraft of its time.
EXTENDED RANGE PERFORMANCE
Capability to travel considerable distances through onboard fuel stores.
Design covers the three all-important performance categories of speed, altitude, and range.
Manual process of allowing its pilot and / or crew to exit in the event of an airborne emergency.
Features partially- or wholly-enclosed crew workspaces.
Features retracting / retractable undercarriage to preserve aerodynamic efficiency.