Scout X1

4 stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair

Manufacturer: Vought. Launches: 8. Failures: 4. Success Rate: 50.00%. First Launch Date: 1960-07-02. Last Launch Date: 1962-03-01. Launch data is: complete. LEO Payload: 59 kg (130 lb). to: 185 km Orbit. Associated Spacecraft: S-55, S-56. Liftoff Thrust: 427.100 kN (96,016 lbf). Total Mass: 16,240 kg (35,800 lb). Core Diameter: 1.01 m (3.31 ft). Total Length: 25.00 m (82.00 ft). Flyaway Unit Cost $: 8.910 million. in: 1985 unit dollars.

4 stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair

LEO Payload: 59 kg (130 lb). to: 185 km Orbit. Liftoff Thrust: 427.100 kN (96,016 lbf). Total Mass: 16,240 kg (35,800 lb). Core Diameter: 1.01 m (3.31 ft). Total Length: 25.00 m (82.00 ft).

5 stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair + 1 x Cetus

Apogee: 220 km (130 mi). Liftoff Thrust: 440.000 kN (98,910 lbf). Total Mass: 17,000 kg (37,000 lb). Total Length: 22.00 m (72.00 ft).

• Stage Number: 1. 1 x Stage: Algol 1. Gross Mass: 10,705 kg (23,600 lb). Empty Mass: 1,900 kg (4,100 lb). Thrust (vac): 470.934 kN (105,870 lbf). Isp: 236 sec. Burn time: 40 sec. Isp(sl): 214 sec. Diameter: 1.01 m (3.31 ft). Span: 1.01 m (3.31 ft). Length: 9.12 m (29.92 ft). Propellants: Solid. No Engines: 1. Engine: Algol 1. Other designations: Senior. This rocket started as a Polaris test motor with a 40 inch diameter, which at the time was the largest solid motor ever tested. It had a nominal performance rating of 45 seconds duration and 45,000 kgf thrust. Variations included Algol I, I-D, II, II-A, II-B and possibly others. Another popular rating was 40KS-115,000 (52,000 kgf for 40 seconds), also known as Senior.

• Stage Number: 2. 1 x Stage: Castor 1. Gross Mass: 3,852 kg (8,492 lb). Empty Mass: 535 kg (1,179 lb). Thrust (vac): 286.001 kN (64,296 lbf). Isp: 247 sec. Burn time: 27 sec. Isp(sl): 232 sec. Diameter: 0.79 m (2.59 ft). Span: 0.79 m (2.59 ft). Length: 5.92 m (19.42 ft). Propellants: Solid. No Engines: 1. Engine: M33-20-4.

• Stage Number: 3. 1 x Stage: Antares 1A. Gross Mass: 1,225 kg (2,700 lb). Empty Mass: 294 kg (648 lb). Thrust (vac): 60.497 kN (13,600 lbf). Isp: 256 sec. Burn time: 39 sec. Isp(sl): 233 sec. Diameter: 0.78 m (2.55 ft). Span: 0.78 m (2.55 ft). Length: 3.38 m (11.08 ft). Propellants: Solid. No Engines: 1. Engine: X-254.

• Stage Number: 4. 1 x Stage: Altair 1A. Gross Mass: 390 kg (850 lb). Empty Mass: 181 kg (399 lb). Thrust (vac): 13.788 kN (3,100 lbf). Isp: 255 sec. Burn time: 40 sec. Isp(sl): 232 sec. Diameter: 0.46 m (1.50 ft). Span: 0.46 m (1.50 ft). Length: 2.50 m (8.20 ft). Propellants: Solid. No Engines: 1. Engine: X-248A.

1960 July 2 - 00:04 GMT - Launch Site: Wallops Island. Launch Complex: LA3. Launch Vehicle: Scout X-1. LV Configuration: Scout X-1 ST-1. FAILURE: Failure.

• Test mission Nation: USA. Class: Earth. Type: Magnetosphere. Agency: NASA. Apogee: 1,380 km (850 mi). NASA Radiation Probe References: 5, 126, 799.

• USAF Radiation Probe (Radiation Probe) Nation: USA. Class: Earth. Type: Magnetosphere. Agency: NASA. Apogee: 5,600 km (3,400 mi). COSPAR: 19601004S. Decay Date: 1960-10-04. References: 0.

• Explorer (9) S 56 Nation: USA. Program: Explorer. Payload: S-56. Mass: 6.00 kg (13.20 lb). Class: Earth. Type: Atmosphere. Spacecraft: S-56. Agency: NASA. COSPAR: F601204A. Decay Date: 1960-12-04. References: 5, 126.

• Explorer 9 Nation: USA. Program: Explorer. Payload: S-56A. Mass: 7.00 kg (15.40 lb). Class: Earth. Type: Atmosphere. Spacecraft: S-56. Agency: U.S. Air Force. Perigee: 757 km (470 mi). Apogee: 2,433 km (1,511 mi). Inclination: 38.80 deg. Period: 118.00 min. COSPAR: 1961-Delta-1. USAF Sat Cat: 81. Decay Date: 1964-04-09. 12 foot dia. balloon; atmospheric density studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). References: 1, 2, 5, 6.

• Explorer (13) S 55 Nation: USA. Program: Explorer. Payload: S-55. Mass: 84 kg (185 lb). Class: Earth. Type: Micrometeoroid. Spacecraft: S-55. Agency: NASA. Apogee: 172 km (106 mi). COSPAR: F610630A. Decay Date: 1961-06-30. Micrometeorite counter satellite (S-55). References: 5, 126.

• Explorer 13 Nation: USA. Program: Explorer. Payload: S-55A. Mass: 86 kg (189 lb). Class: Earth. Type: Micrometeoroid. Spacecraft: S-55. Agency: NASA. Perigee: 125 km (77 mi). Apogee: 1,164 km (723 mi). Inclination: 37.70 deg. Period: 97.50 min. COSPAR: 1961-Chi-1. USAF Sat Cat: 180. Decay Date: 1961-08-28. Useless orbit; micrometeoroid research. Partial Failure. References: 1, 2, 5, 6.

• P-21 Nation: USA. Class: Technology. Type: Military. Agency: NASA. Apogee: 6,855 km (4,259 mi). COSPAR: 19611019S. Decay Date: 1961-10-19. References: 0.

• Reentry 1 re-entry vehicle test flight Nation: USA. Class: Technology. Type: RV. Agency: NASA. Apogee: 214 km (132 mi). References: 5, 799.

• McDowell, Jonathan, Jonathan's Space Home Page, Harvard University, 1997-present. Jonathan McDowell's complete on-line listing of all objects orbited and over 20,000 rocket launches Accessed at: http://www.planet4589.org/jsr.html.

• Wilson, Andrew, Spaceflight, "Scout - NASA's Small Satellite Launcher", 1979, Volume 21, page 446.