American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 3A + 1 x Castor 2 + 1 x Antares 3 + 1 x Star 20

AKA: Scout G. Status: Retired 1994. First Launch: 1979-10-30. Last Launch: 1994-05-09. Number: 17 . Payload: 210 kg (460 lb). Thrust: 395.50 kN (88,912 lbf). Gross mass: 20,930 kg (46,140 lb). Height: 26.00 m (85.00 ft). Diameter: 1.14 m (3.74 ft). Apogee: 185 km (114 mi).

LEO Payload: 210 kg (460 lb) to a 185 km orbit. Flyaway Unit Cost 1985$: 8.660 million.

Stage Data - Scout G

• Stage 1. 1
  x Algol 3.
  Gross Mass: 14,320 kg
   Empty Mass: 1,600 kg
  Thrust (vac): 471.905 kN  Isp: 284 sec.
  Burn time: 75 sec. Isp(sl): 238 sec.
  Diameter: 1.14 m 
  Span: 1.14 m 
  Length: 9.40 m
  . Propellants: Solid. No Engines: 1.
  Engine: Algol 3.
  Status: In Production.

• Stage 2. 1
  x Castor 2.
  Gross Mass: 4,424 kg
  Empty Mass: 695 kg
  Thrust (vac): 258.915 kN  Isp: 262 sec.
  Burn time: 37 sec. Isp(sl): 232 sec.
  Diameter: 0.79 m 
  Span: 0.79 m 
  Length: 6.04 m 
  Propellants: Solid. No
  Engines: 1. Engine: TX-354-3.
  Status: In Production.

• Stage 3. 1
  x Antares 3A.
  Gross Mass: 1,637 kg
  Empty Mass: 352 kg
  Thrust (vac): 80.796 kN  Isp: 295 sec.
  Burn time: 48 sec.
  Diameter: 0.76 m
  Span: 0.76 m 
  Length: 3.51 m 
  Propellants: Solid. No
  Engines: 1. Engine: X-259A.
  Status: Out of Production.

• Stage 4. 1
  x Altair 3.
  Gross Mass: 301 kg
  Empty Mass: 25 kg
  Thrust (vac): 27.400 kN . Isp: 280 sec
   Burn time: 27 sec. Isp(sl): 255 sec.
  Diameter: 0.64 m
  Span: 0.64 m 
  Length: 2.53 m
  Propellants: Solid. No
  Engines: 1. Engine: FW-4S, TEM640.
  Status: Out of Production.