At the end of the war, Ivan Ivanovich Makhonin, with the support of the French Aviation Ministry, built in 1947 a 4-seat Mak.123 aircraft based on the same principles as his predecessors Mak.10 and Mak.101.
A device with a variable wing length (the wing length varied from 13 to 21 m, and the area from 20 to 36 sq.m) and a captured BMW 801 engine with a power of 1800 hp. tested in the same year.
First flying in 1947, the original feature of the aircraft was the cabin with a tandem landing (one behind the other) of all four crew members.
It was assumed that Mak.123 could become the base model for a promising reconnaissance aircraft, but the inventor failed to continue research and the project was terminated after it crashed and not re-built.
Engine: BMW 801, 1800 hp
Wingspan: 13.00 – 21.00 m
Wing area: 20.00 – 36.00 sq.m
Empty weight: 7000 kg
Normal take-off weight: 10,000 kg
Maximum speed: 300 km/h
Practical ceiling: 5500 m
Seats: 4
All Aero 