The Peña Dahu, named for the legendary French mountain animal, is a French amateur-built aircraft that was designed by Louis Peña of Dax, Landes and made available in the form of plans for amateur construction.^[1][2]

The Dahu is intended for mountain flying, aero-towing gliders and touring. It features a cantilever low-wing, a four-seat enclosed cockpit, fixed conventional landing gear and a single engine in tractor configuration.^[1][2]

The Dahu is made from wood. Its 9 m (29.5 ft) span wing has an area of 15 m² (160 sq ft) and mounts flaps. The recommended engines range in power from 120 to 200 hp (89 to 149 kW) and include the 160 hp (119 kW) Lycoming O-320, 180 hp (134 kW) Lycoming O-360 and the fuel-injected 200 hp (149 kW) Lycoming IO-360 four-stroke powerplants. When equipped with a 120 hp (89 kW) engine the gross weight is limited to 900 kg (1,984 lb) instead of 1,200 kg (2,646 lb).^[1][2]

Reviewers Roy Beisswenger and Marino Boric described the design in a 2015 review as "unashamedly rustic".^[2]

Data from Bayerl and Tacke^[1][2]

General characteristics

• Crew: one
• Capacity: three passengers
• Wingspan: 9 m (29 ft 6 in)
• Wing area: 15 m² (160 sq ft)
• Empty weight: 600 kg (1,323 lb)
• Gross weight: 1,200 kg (2,646 lb) 900 kg (1,984 lb) when equipped with a 120 hp (89 kW) engine
• Fuel capacity: 200 litres (44 imp gal; 53 US gal)
• Powerplant: 1 × Lycoming O-360 four cylinder, air-cooled, four stroke aircraft engine, 130 kW (180 hp)
• Propellers: 2-bladed metal constant speed propeller

Performance

• Maximum speed: 310 km/h (190 mph, 170 kn)
• Cruise speed: 230 km/h (140 mph, 120 kn)
• Stall speed: 80 km/h (50 mph, 43 kn)
• Rate of climb: 6 m/s (1,200 ft/min)
• Wing loading: 80.0 kg/m² (16.4 lb/sq ft)

• Official website