Extra EA300 / Extra 300

The Extra Flugzeugbau EA300 is a two-seat aerobatic monoplane capable of Unlimited category competition. It was designed in 1987 by Walter Extra, a German aerobatic pilot, and built by Extra Flugzeugbau.

Design and Development

Design of the Extra 300 was based on the Extra 230, an early 1980s monoplane having a wing made of wood. The Extra 300 has a welded steel tube fuselage covered in aluminium and fabric. The midset wing has a carbon fiber composite spar and carbon composite skins. [1] A symmetrical airfoil, mounted with a zero angle of incidence, provides equal performance in both upright and inverted flight. The landing gear is fixed taildragger style with composite main legs and fiberglass wheel pants. The powerplant is a fuel-injected Lycoming AEIO-540 which produces 300 horsepower (224 kW).

Specifications

General characteristics

Crew: 1 or 2
Length: 6.9 m (22 ft 8 in)
Wingspan: 8 m (26 ft 3 in)
Height: 2.6 m (8 ft 6 in)
Wing area: 10.7 m2 (115 sq ft)
Airfoil: root: MA 15S ; tip: MA 12S
Empty weight: 660 kg (1,455 lb) equipped
Max takeoff weight: 950 kg (2,094 lb) 2-pilot normal (+6g / -3g)
                                 870 kg (1,918 lb) 2-pilot aerobatic (+8g / -8g)
                                 820 kg (1,808 lb) 1-pilot aerobatic (+10g / -10g)
Fuel capacity: 189 l (50 US gal; 42 imp gal) (usable normal: 187 l (49 US gal;41 imp gal) ; usable aerobatic 67 l (18 US gal; 15 imp gal))
Powerplant: 1 × Lycoming AEIO-540-L1B5 6-cylinder air-cooled horizontallyopposed piston engine, 224 kW (300 hp)
Propellers: 3 or 4-bladed MT-Propeller composite constant-speed propeller

Performance

Cruise speed: 317 km/h (197 mph, 171 kn)
Stall speed: 102 km/h (63 mph, 55 kn) (VS) at 820 km/h (510 mph; 440 kn) 111 km/h (69 mph; 60 kn) at 950 km/h (590 mph;510 kn)
Never exceed speed: 407 km/h (253 mph, 220 kn)
Manoeuvring speed: (Va){820 km/h (510 mph; 440 kn)

Specifications (EA-300LP)

Ferry range: 944 km (587 mi, 510 nmi) with auxiliary fuel
Service ceiling: 4,875 m (15,994 ft)
g limits: 2-pilot normal +6 -3
              2-pilot aerobatic +8 -8
              1-pilot aerobatic +10 -10
Roll rate: 400°/s
Rate of climb: 16 m/s (3,100 ft/min)
Power/mass: 3.6 kg/kW (5.9 lb/hp) in typical solo configuration