Both candidates to power the Eclipse 500 are similar in size and weight. Fuel consumption for the guaranteed range will increase by about 38 litres (10 USgal), and fuel capacity by 76 litres.
Maximum take-off weight will increase by around 350kg (775lb) to 2,500kg. This will require "minor" thickening of the wing spar caps, increased brake disc thickness and strengthened tyres. Increased span and redesigned tracks will improve flap effectiveness to retain a 64kt (118km/h) stall speed.
The shorter, fatter engines will be mounted 240mm (9.5in) further forward and 75mm further outboard, but no change in flying qualities is expected. A 28V starter-generator replacing the power conditioning units is required by the EJ22's power magnet generator. The air-conditioning system will move from wing root to nose.
High-speed cruise is estimated at 377kt, climb rate at 2,993ft/ min (15.2m/s) and single-engine climb at 1,100ft/min. Useful load will increase to accommodate the extra fuel without making an impact on the passenger and baggage load.
Source: Flight International
