Martin Sonka
Country
Czechia
Aircraft
Extra 300SR / Extra NG
Base
Tabor Airfield
Extra 300SR
The Extra 300SR is a modified version of the Extra 330SC using a specially designed high-lift wing for the Red Bull Air Race World Series.
The 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 fibre composite spar and carbon composite skins. 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 fibreglass wheel pants. The powerplant is a Lycoming AEIO-580 EXP which produces 325 horsepower.
The Extra 300 is stressed for ±10 G with one person on board and ±8 G with two. Some Extra 300s are certified in the experimental category in the U.S., while others are certified in the aerobatic category
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Extra NG
The Extra NG is a two-seat German aerobatic monoplane designed by Walter Extra and built by Extra Aerobatic Aircraft.
The NG is a two-seat low wing cantilever monoplane of carbon fibre construction. It has a fixed landing gear with a tail wheel and an enclosed cockpit with two seats in tandem (pilot in the rear and a passenger in the front). It is powered by a Textron-Lycoming AEIO-580-B1A engine with either a three or four-bladed tractor propeller.
The aircraft was presented to the public on 22 July 2019 at AirVenture. It received an EASA Type Certificate on 11 October 2019.
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