Lange Antares 20E / Antares 23E / E1 Antares

The E1 Antares is a composite single-seat self-launching powered glider with an electric motor. The E1 Antares (also known as the “Antares 20E”) is an all new design with a shoulder-mounted 20 metre span wing with flaperons and winglets. The aircraft is constructed from CRP/GRP-composites, with a T-shaped horizontal tailplane with fin and elevator, Schempp-Hirth airbrakes on the upper wing, and wing water ballast tanks. The retractable landing gear is equipped with brake and spring suspension.

The EA 42 electric drive system consists of the electric motor EM42, power-electronics LE42, engine control system EDCS2 and the sensor, data and power cables. The 42kW brushless DC electric motor is powered by a SAFT lithium-ion battery system, spilt into two packs positioned in the leading edge of both wings and composite two-blade fixed-pitch two metre diameter propeller.

E1 Antares EASA Type Certificate A.092, and includes the EA 42 engine based on EASA Type Certificate E.015 and the LF-P42 propeller based on EASA Type Certificate P.015.

The Lange EA 42 is an electrical aero engine designed for self launching gliders. It is produced in Germany by Lange Aviation for their Antares 20E glider.

E1 Antares
Engine: Lange EA 42
Propeller: Lange LF-P42
MCTOW: 660 kg (with water ballast)
MCTOW: 602 kg (without)
No. of Seats: 1

Langdon Helicopter

The 1929 single-place Helicopter used a helical vane arrangement with a myriad of wires replacing the wings and stabilizers on a heavily-modified Curtiss JN-4D fuselage. US patent #1,694,880 was granted in 1928. The rotor was driven by a disc drive, with friction providing speed control.

The plane was apparently built, but flight info, if any, was unrecorded.

Engine: 150hp Hisso A
Rotor: 26’0″

Lang Skylark

The Skylark lightweight ultralight was deve¬loped by Ron Lang of Skylark engine fame. The double surface wings have leading and trailing edge spars made of aluminium tube which have compression struts diagonally braced with cables and formed tube ribs are riveted to the spars.

Engine: Skylark 28 hp.
Prop: 121 cm x 66 cm pitch.
Wing span: 8.5 m.
Econ cruise speed: 35-40 kts.
Stall: 22 kts.
Construction time: 30 hrs.