Ki-77 отличали чистота аэродинамики и крыло очень большого размаха, расчетная дальность полета составляла 18000 км.
Powered by two 1,000hp. Nakajima engines similar to those used in the Zero fighter, the Tachikawa A-26 had a top speed of 273 m.p.h. For maximum range it cruised at 186 m.p.h.
The prototype Ki-77-I made its first flight on November 18, 1942, and in January 1943 it undertook a successful test flight between Tachikawa, near Tokyo, and Fukuoka on Kyushu.

Самолёты на фотографии: Aircrafts on the photo: Tachikawa Ki.77 - ЯпонияJapan - 1942

Japanese engineers gather around one of the two Ki-77s before another test flight circa 1943.
The Tachikawa Ki.77-I long-range research machine landing following its record flight in Manchuria in July 1944.

Самолёты на фотографии: Aircrafts on the photo: Tachikawa Ki.77 - ЯпонияJapan - 1942

Initial design work on the Ki-77 specified a “sealed oxygen cabin”, unpressurised but sealed to prevent loss of oxygen, so as to minimise the use of oxygen masks for the crew on flights of extremely long duration; in the event, the crew did have to use masks fed from cylinders loaded aboard, as seen here.

Самолёты на фотографии: Aircrafts on the photo: Tachikawa Ki.77 - ЯпонияJapan - 1942

Tachikawa Ki-77/A-26

Самолёты на фотографии: Aircrafts on the photo: Tachikawa Ki.77 - ЯпонияJapan - 1942

Tachikawa Ki-77

Самолёты на фотографии: Aircrafts on the photo: Tachikawa Ki.77 - ЯпонияJapan - 1942