Birdman TL 1

Design and development

The TL-1's fuselage is nothing more than a boom connecting a set of wings with a V-tail. The pilot's seat and a pedestal carrying the pusher engine are attached to the top of the boom just forward of the wing. Flight control is provided by a series of spoilers.

Construction is of wood covered with Monokote and the aircraft was designed to be quickly dismantled for transport or storage. With an empty weight of 122 lb (55 kg), it is held to be the lightest aircraft to have been flown at the time.

Variants

TL-1A

Base model with longer span wing.

RB-1

Later model with shorter 28 ft (8.5 m) span wing and simplified landing gear. The empty weight of this model is 122 lb (55 kg), gross weight 350 lb (159 kg), the same as the TL-1A.

Specifications (TL-1)

General characteristics

Crew: one pilot

Length: 19 ft 5 in (5.92 m)

Wingspan: 34 ft 0 in (10.37 m)

Height: 7 ft 2 in (2.18 m)

Wing area: 145 ft² (13.5 m²)

Empty weight: 122 lb (55 kg)

Gross weight: 350 lb (159 kg)

Powerplant: 1 × McCulloch MC101 one-cylinder two-cycle piston engine, 15 hp (11 kW)

Performance

Maximum speed: 55 mph (89 km/h)

Range: 200 miles (322 km)

Service ceiling: 5,500 ft (1,680 m)

Rate of climb: 200 ft/min (1.0 m/s)