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Scout X-4
Part of Scout Family
Scout X4
Scout X4
Scout X4 - COSPAR 1964-084
American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x Altair 2

Status: Retired 1965. First Launch: 1963-06-28. Last Launch: 1965-12-06. Number: 13 . Payload: 103 kg (227 lb). Thrust: 513.40 kN (115,417 lbf). Gross mass: 17,250 kg (38,020 lb). Height: 25.00 m (82.00 ft). Diameter: 1.01 m (3.31 ft). Apogee: 185 km (114 mi).

LEO Payload: 103 kg (227 lb) to a 185 km orbit. Flyaway Unit Cost 1985$: 8.610 million.

Stage Data - Scout X-4

  • Stage 1. 1 x Algol 2. Gross Mass: 11,600 kg (25,500 lb). Empty Mass: 1,650 kg (3,630 lb). Thrust (vac): 564.245 kN (126,847 lbf). Isp: 255 sec. Burn time: 47 sec. Isp(sl): 232 sec. Diameter: 1.01 m (3.31 ft). Span: 1.01 m (3.31 ft). Length: 9.09 m (29.82 ft). Propellants: Solid. No Engines: 1. Engine: Algol 2. Status: Out of Production.
  • Stage 2. 1 x 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. Status: Out of Production.
  • Stage 3. 1 x Antares 2. Gross Mass: 1,400 kg (3,000 lb). Empty Mass: 300 kg (660 lb). Thrust (vac): 93.094 kN (20,928 lbf). Isp: 293 sec. Burn time: 36 sec. Isp(sl): 233 sec. Diameter: 0.78 m (2.55 ft). Span: 0.78 m (2.55 ft). Length: 2.90 m (9.50 ft). Propellants: Solid. No Engines: 1. Engine: X-259. Status: Out of Production.
  • Stage 4. 1 x Altair 2. Gross Mass: 275 kg (606 lb). Empty Mass: 37 kg (81 lb). Thrust (vac): 22.241 kN (5,000 lbf). Isp: 266 sec. Burn time: 28 sec. Isp(sl): 242 sec. Diameter: 0.64 m (2.09 ft). Span: 0.64 m (2.09 ft). Length: 2.53 m (8.30 ft). Propellants: Solid. No Engines: 1. Engine: X-258. Status: Out of Production.


More at: Scout X-4.

Family: all-solid, orbital launch vehicle. Country: USA. Engines: Sert-I Cesium, Sert-I Mercury. Spacecraft: Transit, Injun, S-55, GRS, ADE, ESRS, IE, Beacon, San Marco satellite, IQSY, FRANCE satellite. Projects: Explorer. Launch Sites: Wallops Island, Vandenberg, Wallops Island LA3, Vandenberg SLC5, Wallops Island LA3A. Stages: Algol 2, Altair 2, Antares 2, Castor 1. Agency: Vought.
Photo Gallery

ScoutScout
Credit: © Mark Wade



1963 June 28 - . 21:19 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-4.
  • GRS - . Payload: CRL 1. Mass: 99 kg (218 lb). Nation: USA. Agency: USAF AFC. Class: Earth. Type: Magnetosphere satellite. Spacecraft: GRS. Decay Date: 1983-12-14 . USAF Sat Cat: 612 . COSPAR: 1963-026A. Apogee: 1,306 km (811 mi). Perigee: 413 km (256 mi). Inclination: 49.7000 deg. Period: 102.10 min. Geophysical Research Satellite; space gas data. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1963 December 19 - . 18:49 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 19 - . Payload: ADE A. Mass: 7.00 kg (15.40 lb). Nation: USA. Agency: NASA Langley. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: ADE. Decay Date: 1981-05-10 . USAF Sat Cat: 714 . COSPAR: 1963-053A. Apogee: 2,391 km (1,485 mi). Perigee: 597 km (370 mi). Inclination: 78.6000 deg. Period: 115.90 min.

    In its first NASA use from Vandenberg AFB a Scout rocket (#122) was successfully launched. The 18-pound Explorer 19 atmosphere density satellite was successfully injected into orbit. 12 foot dia. balloon; identical to Explorer 9; atmospheric density studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).


1964 June 4 - . 03:50 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Transit 5C-1 - . Payload: Transit 5C / OPS 4412. Mass: 54 kg (119 lb). Nation: USA. Agency: USN. Program: Transit. Class: Navigation. Type: Navigation satellite. Spacecraft: Transit. USAF Sat Cat: 801 . COSPAR: 1964-026A. Apogee: 898 km (557 mi). Perigee: 825 km (512 mi). Inclination: 90.5000 deg. Period: 102.20 min. Operational prototype similar to the 5A series but with some redesign to improve performance. Operated successfully until 23 August 1965..

1964 June 25 - . 01:40 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4. FAILURE: Second stage exploded.. Failed Stage: 2.
  • ESRS - . Payload: CRL 2. Mass: 79 kg (174 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: ESRS. Decay Date: 1964-06-25 . Environmental Sciences Research Satellite..

1964 July 20 - . 10:53 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3A. LV Family: Scout. Launch Vehicle: Scout X-4.
  • SERT 1 Technology mission - . Nation: USA. Agency: NASA. Apogee: 4,002 km (2,486 mi).

    Suborbital 30 minute test of NASA SERT ion engine. The early part of the flight was dedicated to attempts to operate the cesium engine. The cesium engine could not be started because of a high-voltage electrical short circuit. The mercury engine was started about 14 minutes into the flight. This engine was successfully operated for 31 minutes with 53 high-voltage recycle vents which were handled by the fault protection system. Each of the recycle events was only a few seconds duration. Major results from the test were the first demonstration of an ion engine in space, demonstration of effective ion beam neutralization, no EMI effects on other spacecraft systems, and effective recovery from electrical breakdowns. Thrust was measured using three independent measuring systems, and there were no major differences between in-space and ground test performance.


1964 August 25 - . 13:43 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 20 - . Payload: IE A (S-48 Ionosphere Explorer). Mass: 44 kg (97 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Ionosphere satellite. Spacecraft: IE. USAF Sat Cat: 870 . COSPAR: 1964-051A. Apogee: 999 km (620 mi). Perigee: 857 km (532 mi). Inclination: 79.9000 deg. Period: 103.60 min. Ionospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1964 October 10 - . 03:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 22 - . Payload: Beacon Explorer B. Mass: 52 kg (114 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Ionosphere satellite. Spacecraft: Beacon. USAF Sat Cat: 899 . COSPAR: 1964-064A. Apogee: 1,053 km (654 mi). Perigee: 872 km (541 mi). Inclination: 79.7000 deg. Period: 104.30 min. Ionospheric and geodetic data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space..

1964 November 6 - . 12:02 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 23 - . Payload: S-55C. Mass: 134 kg (295 lb). Nation: USA. Agency: NASA Langley. Program: Explorer. Class: Earth. Type: Micrometeoroid satellite. Spacecraft: S-55. Decay Date: 1983-06-29 . USAF Sat Cat: 924 . COSPAR: 1964-074A. Apogee: 980 km (600 mi). Perigee: 463 km (287 mi). Inclination: 51.9000 deg. Period: 99.20 min. Micrometeoroid data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1964 November 21 - . 17:09 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 24 - . Payload: ADE B. Mass: 9.00 kg (19.80 lb). Nation: USA. Agency: NASA Langley. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: ADE. Decay Date: 1968-10-18 . USAF Sat Cat: 931 . COSPAR: 1964-076A. Apogee: 2,498 km (1,552 mi). Perigee: 530 km (320 mi). Inclination: 81.4000 deg. Period: 116.30 min. 12 foot dia. balloon; atmospheric density studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .
  • Explorer 25 - . Payload: Injun 4. Mass: 40 kg (88 lb). Nation: USA. Agency: NASA Langley. Program: Explorer. Class: Earth. Type: Magnetosphere satellite. Spacecraft: Injun. USAF Sat Cat: 932 . COSPAR: 1964-076B. Apogee: 2,319 km (1,440 mi). Perigee: 526 km (326 mi). Inclination: 81.3000 deg. Period: 114.30 min. Radiation data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1964 December 15 - . 20:20 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3A. LV Family: Scout. Launch Vehicle: Scout X-4.
  • San Marco 1 - . Mass: 254 kg (559 lb). Nation: Italy. Agency: CRS. Class: Earth. Type: Atmosphere satellite. Spacecraft: San Marco satellite. Decay Date: 1965-09-11 . USAF Sat Cat: 957 . COSPAR: 1964-084A. Apogee: 842 km (523 mi). Perigee: 200 km (120 mi). Inclination: 37.8000 deg. Period: 95.10 min. Atmospheric density studies. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1965 April 29 - . 14:17 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3A. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 27 - . Payload: Beacon Explorer C. Mass: 60 kg (132 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Ionosphere satellite. Spacecraft: Beacon. USAF Sat Cat: 1328 . COSPAR: 1965-032A. Apogee: 1,309 km (813 mi). Perigee: 932 km (579 mi). Inclination: 41.2000 deg. Period: 107.70 min. Battery failed in 1968; ionospheric research and geodetic data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space..

1965 November 19 - . 04:48 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA3A. LV Family: Scout. Launch Vehicle: Scout X-4.
  • Explorer 30 - . Payload: Solar Explorer A. Mass: 57 kg (125 lb). Nation: USA. Agency: NRL. Program: Explorer. Class: Astronomy. Type: Solar satellite. Spacecraft: IQSY. USAF Sat Cat: 1738 . COSPAR: 1965-093A. Apogee: 856 km (531 mi). Perigee: 671 km (416 mi). Inclination: 59.7000 deg. Period: 100.10 min. Solar radiation data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1965 December 6 - . 21:05 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout X-4.
  • FRANCE 1 - . Payload: FR 1. Mass: 60 kg (132 lb). Nation: France. Agency: CNES. Class: Earth. Type: Ionosphere satellite. Spacecraft: FRANCE satellite. USAF Sat Cat: 1814 . COSPAR: 1965-101A. Apogee: 707 km (439 mi). Perigee: 696 km (432 mi). Inclination: 75.9000 deg. Period: 98.80 min.

    VLF wave propagation studies. Investigation of the properties of the ionized layers of the atmosphere by observation of the propagation of the properties of very low frequency waves in the ionosphere. First registered by the United States in A/AC.105/INF.125. Orbit given there was 99 .9 min, 749 x 753 km x 75.9 deg, with note: France provided the payload for 1965-101A.



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