Alter A.1
# Alter A.1

The Alter A.1 was a single-seat biplane fighter aircraft first flown in February 1917. Built by Ludwig Alter-Werke of Darmstadt to a design by Kallweit and Ketterer, the A.1 was very similar in concept to the Nieuport 11, but not an exact copy.

## Design and development

Powered by a 110 hp Goebel Goe II 7-cylinder rotary engine, the A.1 had I-type inter-plane struts and a wood-framed, fabric and plywood covered fuselage, armed with twin, synchronised 7.92 mm LMG 08/15 machine guns.

Development was halted following demonstration to the Idflieg (Inspektion der Fliegertruppe), who judged its performance inadequate and its construction overly flimsy.

## Specifications (Alter A.I)

Data from Alter A.Ifr:Alter A.I

General characteristics

* Crew: 1
* Gross weight: 510 kg (1,124 lb)
* Powerplant: × Goebel Goe II 7-cylinder air-cooled rotary piston engine, 82 kW (110 hp)

Performance

* Maximum speed: 117 km/h (73 mph, 63 kn)
* Rate of climb: 3.91 m/s (770 ft/min)
* Time to altitude: 3,000m in 12.8min

Armament

