Encyclopedia Astronautica
J-1 F2



j115a.jpg
J-1 F2
Japanese all-solid orbital launch vehicle. Lower cost alternate to the original J-1 design. Uses the SRB-A of the H-2A vehicle as the first stage, the second and third stages of the J-1, with updated avionics.

LEO Payload: 850 kg (1,870 lb) to a 250 km orbit at 30.00 degrees. Payload: 600 kg (1,320 lb) to a 407 km 51.6 deg orbit.

Stage Data - J-1 F2

  • Stage 1. 1 x H-2A SRB-A. Gross Mass: 76,400 kg (168,400 lb). Empty Mass: 10,400 kg (22,900 lb). Thrust (vac): 2,250.000 kN (505,820 lbf). Isp: 280 sec. Burn time: 101 sec. Isp(sl): 230 sec. Diameter: 2.50 m (8.20 ft). Span: 2.50 m (8.20 ft). Length: 15.20 m (49.80 ft). Propellants: Solid. No Engines: 1. Engine: SRB-A. Status: In production. Comments: Shorter monolithic motor using filament-wound case technology from Thiokol. Version for J-1 has 1,000 kg less propellant and 1,200 kg less empty mass.
  • Stage 2. 1 x J-1-2. Gross Mass: 12,800 kg (28,200 lb). Empty Mass: 2,400 kg (5,200 lb). Thrust (vac): 524.802 kN (117,980 lbf). Isp: 282 sec. Burn time: 73 sec. Isp(sl): 0.0000 sec. Diameter: 1.40 m (4.50 ft). Span: 1.40 m (4.50 ft). Length: 2.70 m (8.80 ft). Propellants: Solid. No Engines: 1. Engine: M-23-J. Other designations: M-23. Status: In production. Comments: Version for J-1 F2 has 300 kg heavier empty mass.
  • Stage 3. 1 x J-1-3. Gross Mass: 3,600 kg (7,900 lb). Empty Mass: 300 kg (660 lb). Thrust (vac): 132.085 kN (29,694 lbf). Isp: 294 sec. Burn time: 87 sec. Isp(sl): 0.0000 sec. Diameter: 1.50 m (4.90 ft). Span: 1.50 m (4.90 ft). Length: 2.70 m (8.80 ft). Propellants: Solid. No Engines: 1. Engine: M-3B-J. Other designations: M-3B. Status: In production.

Status: In development.
Gross mass: 91,500 kg (201,700 lb).
Payload: 850 kg (1,870 lb).
Height: 26.20 m (85.90 ft).
Diameter: 2.50 m (8.20 ft).
Thrust: 1,800.00 kN (404,600 lbf).
Apogee: 250 km (150 mi).

More... - Chronology...


Associated Countries
See also
  • J All-solid rocket motor launch vehicle. Because of the high cost, the original J-1 design was superseded by an alternate J-1 F2 with a different booster stage. More...

Associated Manufacturers and Agencies
  • Nissan Japanese manufacturer of rocket engines and rockets. Nissan, Japan. More...

Associated Stages
  • H-2A SRB-A Solid propellant rocket stage. Loaded/empty mass 76,400/10,400 kg. Thrust 2,250.00 kN. Vacuum specific impulse 280 seconds. More...
  • J-1-2 Solid propellant rocket stage. Loaded/empty mass 12,800/2,400 kg. Thrust 524.80 kN. Vacuum specific impulse 282 seconds. Version for J-1 F2 has 300 kg heavier empty mass. More...
  • M-3B Solid propellant rocket stage. Loaded/empty mass 3,590/310 kg. Thrust 132.12 kN. Vacuum specific impulse 294 seconds. More...

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