This page is a list of all the known rocket & jet engines for aircraft that were developed by Japan during World War II, including production, prototypes, and paper.

*Tables scroll on mobile!

Rocket:

Turbojet (‘Turbine Rocket’):

Engine Jet (‘Motor Turbine Propeller Rocket’):

Motorjet (‘Engine Rocket’):

Turboprop (‘Gas Turbine Propeller Rocket’):

Ramjet (‘Dynamic Pressure Rocket’):

Pulsejet (‘Intermittent Combustion Rocket’):

Navy Solid Rocket Naming System

• 1st Number: Type designation
• Lettering:
  • F = ‘Funshin-ki’ 噴進器 (Rocket) [?? otherwise English ‘for’]
    • R = ‘Ririku’ 離陸 (Takeoff) [takeoff booster use]
    • H = ‘Hikouki’ 飛行機 (Airplane) [mid-air booster use]
• 2nd Number: Mark designation
• Remaining Numbers: Model designation

Examples:
4FR110 = Type 4 Mark 1 Rocket Model 10 (for Takeoff)
4FH120 = Type 4 Mark 1 Rocket Model 20 (for Airplane)

Army Early Jet Engine Naming System (Before Autumn 1944)

• Prefix:
  • ‘Ne’ = ‘Nenshō Funsha Suishin-ki’ 燃焼噴射推進器 (Combustion Jet – Jet Engine)
• First Number:
  • no = low power class engine
  • 10 = medium power class engine
  • 20 = high power class engine
• Last Number:
  • Number in the series, starting from 1

Examples:
Ne-2 = low power class engine 2
Ne-201 = high power class engine 1

(note – this explanation is the author’s theory.)

Navy Early Jet Engine Naming System (Before Autumn 1944)

• Prefix:
  • ‘TR’ = Tābin Roketto タービンロケット (Turbine Rocket – Turbojet)
• First Number:
  • none = made by Kūgishō
  • 1 = made by Ishikawajima Shibaura Turbine
  • 2 = made by Hitachi/Nakajima
  • 3 = made by Mitsubishi
• Mid Number:
  • 1 = 1,000hp class equivalent
  • 2 = 2,000hp class equivalent
  • 3 = 3,000hp class equivalent
  • 4 = 4,000hp class equivalent
• Last Number:
  • Engine variant in that series, starting from 0

Examples:
TR10 = Kūgishō 1,000hp-class jet, variant 1.
TR12 = Kūgishō 1,000hp-class jet, variant 3.
TR140 = Ishikawajima 4,000hp-class jet, variant 1.

Army/Navy Unified Jet Engine Naming System (After Autumn 1944)

• Prefix:
  • ‘Ne’ ネ = ‘Nenshō Funshin-ki’ 燃焼噴進器 (Combustion Jet – Jet Engine)
  • ‘Ka’ カ = ‘Kanketsu Nenshō Roketto’ 間歇燃焼ロケット (Intermittent Combustion Rocket – Pulsejet)
  • ‘Tsu’ ツ = Unknown (Motorjet)
• First Number:
  • none = made by Kūgishō
  • 1 = made by Ishikawajima Shibaura Turbine
  • 2 = made by Hitachi/Nakajima
  • 3 = made by Mitsubishi
• Mid Number:
  • 1 = 1,000hp class equivalent
  • 2 = 2,000hp class equivalent
  • 3 = 3,000hp class equivalent
  • 4 = 4,000hp class equivalent
• Last Number:
  • Engine variant in that series, starting from 0

Examples:
Ne-20 = Kūgishō 2,000hp-class jet, variant 1.
Ne-330 = Mitsubishi 3,000hp-class jet, variant 1.