The Japanese Air Technical Arsenal developed the TSU-11 for the Yokosuka MXY7 Navy Suicide Attacker Ohka Model 22 (Allied Code Name Baka). A Campini-type (partial jet) engine, the TSU-11 was as an interim development between the rocket-powered Ohka Model 11 and the Ne 20 turbojet-powered Ohka Model 43. The objective was to increase the Ohka's range so that it could be released by its delivery aircraft at a greater range from the intended target.

The TSU-11 consisted of a Hitachi Hatsukaze Ha 11 Model 11 four-cylinder, inverted in-line, air-cooled engine driving a single-stage axial-flow compressor. Four fuel burners located aft of the compressor provided afterburning. Three engines were built, and one flight was made in July 1945, when an Ohka 22 was launched from a Yokosuka P1Y Ginga (Allied Code Name Frances). But the war ended before the Ohka 22 became operational.

The engine is installed in the museum's Ohka Model 22 aircraft.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date World War II Country of Origin Japan Type PROPULSION-Turbines (Jet) Manufacturer Air Technical Arsenal, Japan
 Designer Hirth-Motoren G.m.b.H.
Hitachi
 Physical Description Type: Campini - partial jet engine Thrust: 1,779 N (400 lb) at 9,000 rpm Compressor: Single-stage axial Afterburner: Four fuel burners located aft of compressor Driver: 4-cylinder,112 kw (150 hp) at 3,000 rpm, air-cooled inverted Ha 11 Model 11 piston engine (through gearing) Weight: Unknown Dimensions Length 118.0 cm (43.4 in.), Width 44.2 cm (17.4 in.), Height 66.4 cm (26.1 in.) (dimensions for the Hitachi Hatsukaze 11, Ha 11 Model 11 reciprocating engine)
Length 222.5 cm, Diameter 60.0 cm (dimensions for Air Technical Arsenal TSU-11 jet-type engine)
 Inventory Number A19670065000 Credit Line Found in the collection Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.