August 28, 1945
1st Navy Technical Arsenal
List of Prototype Rocket Engines
| Manufacturing Location | Designation | Type | Revolutions | Full Length | Diameter | Weight | Performance (Static Ground) | Characteristics | Equipped (Planned) Airframes | Status | |||
| Production | Prototype | Thrust | FC | ||||||||||
| per min | mm | mm | kg | kg | l/hr | Navy | Army | ||||||
| Technical HQ Arsenals | 1st Technical Arsenal | Ne-20 | Turbine Rocket [Turbojet] | 11000 | 2700 | 620 | 470 | 475 | 900 | Turbine rocket that drives compressor by gas turbine | Kikka Ōka Model 43 | /// | Performance and durability testing complete, undergoing flight testing, in transition to production since 7/1945 |
| /// | Ishikawajima Shibaura Turbine | Ne-130 | Turbine Rocket [Turbojet] | 9000 | 3850 | 850 | 900 | 900 | 1600 | Turbine rocket that drives compressor by gas turbine | /// | /// | Undergoing performance testing |
| /// | Hitachi Manufacturing, 1st Munitions Arsenal | Ne-230 | Turbine Rocket [Turbojet] | 8100 | 3430 | 914 x 762 | 870 | 885 | 1630 | Turbine rocket that drives compressor by gas turbine | /// | /// | Undergoing performance testing |
| /// | Mitsubishi Engines | Ne-330 | Turbine Rocket [Turbojet] | 7600 | 4000 | 1180 x 880 | 1200 | 1300 | 2530 | Turbine rocket that drives compressor by gas turbine | /// | /// | Undergoing ground testing preparations |
| Technical HQ Arsenals | 1st Technical Arsenal | Toku-Ro Mk.2 | Liquid-Fuel Rocket | Pump: 14500 | 2500 | width: 900 x height: 650 | 170 | 1500 | Kō Liquid: 0.7 Otsu Liquid: 2.0 (kg/s) | Liquid-fuel rocket by combustion of Kō liquid (hydrogen peroxide) and Otsu liquid (hydrazine hydrate + methanol) | Shūsui | Performance and durability testing complete, undergoing flight testing, in transition to production since 7/1945 | |
| Hitachi Aircraft | 1st Technical Arsenal | Tsu-11 | Engine Rocket [Motorjet] | Engine: 3000 Fan: 9000 | 2200 | 640 | 200 | 200 | 1200 | Engine rocket that drives compressor by Hatsukaze engine | Ōka Model 22 | /// | Performance and durability testing complete, flight testing also largely finished, in transition to production since 6/1945 |
| /// | 1st Technical Arsenal | Maru-Ka (Provisional) | Intermittent Combustion Rocket [Pulsejet] | /// | 3700 | 580 | 150 | 300 | 1600 | Intermittent combustion rocket | /// | /// | Testing completed with small prototype, practical unit undergoing ground testing preparations |