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Encyclopedia > Vanguard rocket
Vanguard
Launch of Vanguard rocket. (U.S. Navy)
Launch of Vanguard rocket. (U.S. Navy)
Fact sheet
Function Satellite launch vehicle
Manufacturer Martin
Country of origin United States
Size
Height 75 feet
Diameter 3.74 feet
Mass 22,156 lb (10,050 kg)
Stages 3
Capacity
Payload to LEO 20 lb
Launch History
Status Retired
Launch sites LC-18A, Cape Canaveral
Total launches 12
Successes 3
Failures 8
Partial failures 1
Maiden flight October 23, 1957
Last flight September 18, 1959
First Stage - Vanguard
Engines 1 X-405
Thrust 30,303 lbf (134.79 kN)
Specific impulse 248 lbf·s/lb
Burn time 2 min 25 s
Fuel LOX/kerosene
Second Stage - Delta
Engines 1 AJ10-118
Thrust 7,599 lbf (33.80 kN)
Specific impulse 261 lbf·s/lb
Burn time 1 min 55 s
Fuel Nitric acid/UDMH
Third Stage - Grand Central
Engines 1 Solid
Thrust 2,599 lbf (11.56 kN)
Specific impulse 230 lbf·s/lb
Burn time 31 s
Fuel Solid

The Vanguard rocket was intended to be the first launch vehicle the United States would use to place a satellite into orbit. Instead, the Sputnik crisis caused by the surprise launch of Sputnik 1 led the U.S. to quickly orbit the Explorer 1 satellite using a Juno I rocket, making Vanguard I the second U.S. orbital launch. Vanguard rocket (U.S. Navy) Launched by the U.S. Navy 1957-59 File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A Saturn V launch vehicle sends Apollo 15 on its way to the moon. ... The Glenn L. Martin Company was an aircraft company founded by aviation pioneer Glenn L. Martin on August 16, 1912. ... In military aircraft or space exploration, the payload is the carrying capacity of an aircraft or space ship, including as cargo, munitions, scientific instruments or experiments, or external fuel, although internal fuel is usually not included. ... A low Earth orbit (LEO) is an orbit in which objects such as satellites are below intermediate circular orbit (ICO) and far below geostationary orbit, but typically around 350 - 1400 km above the Earths surface. ... The Bumper V-2 was the first missile launched at Cape Canaveral on July 24, 1950. ... is the 296th day of the year (297th in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ... is the 261st day of the year (262nd in leap years) in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Specific impulse (usually abbreviated Isp) is a way to describe the efficiency of rocket and jet engines. ... Lox can stand for any of several things: Lox (salmon) - a type of salmon produce LOx (oxidizer) - liquid oxygen used as oxidizer in aerospace The Lox - was a Yonkers, NY-based rap trio This is a disambiguation page — a list of articles associated with the same title. ... For other uses, see Kerosene (disambiguation). ... Specific impulse (usually abbreviated Isp) is a way to describe the efficiency of rocket and jet engines. ... The chemical compound nitric acid (HNO3), also known as aqua fortis and spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ... Unsymmetrical dimethylhydrazine (UDMH) (1,1-Dimethylhydrazine) is a hypergolic rocket fuel ingredient, often used in combination with the oxidiser nitrogen tetroxide. ... Grand Central may refer to: Grand Central Terminal - a train station in Manhattan, New York, USA Grand Central Station - a train station in Chicago; also the name of the predecessor to Grand Central Terminal (following Grand Central Depot) in Manhattan, New York. ... ... Specific impulse (usually abbreviated Isp) is a way to describe the efficiency of rocket and jet engines. ... ... A Saturn V launch vehicle sends Apollo 15 on its way to the moon. ... This article is about artificial satellites. ... Sputnik 1 The Sputnik crisis was a turn point of the Cold War that began on October 4, 1957 when the Soviet Union launched the Sputnik 1 satellite. ... Sputnik 1 (Russian: , Satellite-1, or literally Co-traveler-1 byname ПС-1 (PS-1, i. ... Explorer-I, officially known as Satellite 1958 Alpha, was the first United States Earth satellite and was sent aloft as part of the United States program for the International Geophysical Year 1957-1958. ... The Jupiter-C Intermediate Range Ballistic Missile (IRBM) was designed by the Army Ballistic Missile Agency (ABMA) The vehicle consists of a modified Redstone ballistic missile with three solid-propellant upper stages. ... Vanguard 1 is the oldest still orbiting artificial satellite, though there is no longer communication with it. ...


Vanguard rockets were used by Project Vanguard from 1957 to 1959. Of the eleven Vanguard rockets which the project attempted to launch, three successfully placed satellites into orbit. Vanguard Rocket Project Vanguard was a program managed by the United States Naval Research Laboratory (NRL), which intended to launch the first artificial satellite into Earth orbit using a Vanguard rocket as the launch vehicle. ...

Contents

Overview

In 1955, the USA announced plans to put a scientific satellite in orbit for the International Geophysical Year (IGY) in 1957/58. At that time there were three possible candidates for the launch vehicle: the Air Force's SM-65 Atlas, a derivative of the Army's SSM-A-14 Redstone, and a Navy proposal for a three-stage rocket based on the RTV-N-12a Viking sounding rocket. However, the Atlas and Redstone ballistic missiles were top-priority military projects, which were not to be slowed by pursuing a secondary space launch mission. Therefore the Navy's project, named Vanguard, was selected in September 1955 as the first satellite launch vehicle of the USA. The Martin company, which had also built the Viking, became prime contractor for the launch vehicle. The International Geophysical Year or IGY was an international scientific effort that lasted from July 1, 1957, to December 31, 1958. ... Mercury Atlas 9 rocket and capsule on pad The Atlas is a venerable line of space launch vehicles built by Lockheed Martin. ... First launched in 1953, the American Redstone rocket was a direct descendant of the German V-2. ... Based on its experiments with captured German V-2 rockets after WWII, the United states decided to develop its own liquid fueld rocket. ...


Politics also played a major role in the selection of Vanguard. The Army's Redstone-based proposal would likely be ready earlier for a first satellite launch. However, Vanguard was a project of the NRL (Naval Research Laboratory), which was regarded more as a scientific than a military organization. This helped to emphasize the non-military goals of the satellite program. This was considered important, because a discussion whether overflights of foreign countries by satellites were legal or not was to be avoided. Bust of Thomas Edison at the front gate of the Naval Research Laboratory. ...


The Vanguard rocket was designed as a three-stage vehicle. The first stage was a General Electric y-405 liquid-fueled engine (designated XLR50-GE-2 by the Navy), derived from the engine of the RTV-N-12a Viking. The second stage was the Aerojet General AJ10-37 (XLR52-AJ-2) liquid-fueled engine, a variant of the engine in the RTV-N-10 Aerobee. Finally, the third stage was a solid-propellant rocket motor. All three-stage Vanguard flights except the last one used a motor built by the Grand Central Rocket Company. Vanguard had no fins, and the first and second stages were controlled by gimballed nozzles. The second stage also housed the vehicle's telemetry system, the inertial guidance system and the autopilot. The third stage was spin stabilized, the spin being imparted by a turn-table on the second stage before separation.


Launch summary

The first two flights of the Vanguard program, designated Test Vehicle (TV)-0 and -1, were actually the last two remaining RTV-N-12a Viking rockets. TV-0, launched on December 8, 1956, primarily tested new telemetry systems, while TV-1 on May 1, 1957 was a two-stage vehicle testing separation and ignition of the solid-fueled upper stage of Vanguard. TV-2, launched on October 23, 1957 after several abortive attempts, was the first real Vanguard rocket. The second and third stages were inert, but the flight successfully tested 1st/2nd-stage separation and spin-up of the third stage. However, by that time, the Soviet Union had already placed the "Sputnik" satellite into orbit, and therefore project Vanguard was more or less forced to launch its own satellite as soon as possible. Therefore, a very small experimental satellite (called the "grapefruit" and weighing only 1.8 kg (4 lb)) was added to TV-3, which was to be the first test of an all-up Vanguard rocket. Although the NRL and Martin tried to emphasize that the TV-3 mission was a pure test flight (and one with several "firsts"), everyone else saw it as the first satellite launch of the Western world. When TV-3 exploded a few seconds after lift-off on December 6, 1957, this was accordingly viewed, at least in the eye of the general public, as a major embarrassment and a disaster for the U.S. space program. is the 342nd day of the year (343rd in leap years) in the Gregorian calendar. ... A car from 1956 Year 1956 (MCMLVI) was a leap year starting on Sunday (link will display full calendar) of the Gregorian calendar. ... is the 121st day of the year (122nd in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ... is the 296th day of the year (297th in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ... Sputnik 1 The Sputnik program was a series of unmanned space missions launched by the Soviet Union in the late 1950s to demonstrate the viability of artificial satellites. ... Vanguard TV3 was the first U.S. attempt to launch a satellite into orbit around the Earth. ... is the 340th day of the year (341st in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ...


Flight TV-3BU (BU = Backup) on February 5, 1958 broke up after 57 seconds because of a control system malfunction, but TV-4 on March 17, 1958 finally succeeded in placing a "Grapefruit"-type satellite into orbit. By that time, however, the Army's Juno (Jupiter-C) had already launched the United States' first satellite. The TV-4 satellite, labeled Vanguard 1, had reached a relatively high orbit (3966 km (2465 miles) x 653 km (406 miles)) and is currently the oldest human artifact in space. The following four flights, TV-5 and SLV (Satellite Launch Vehicle)-1 through -3 all failed, but on February 17, 1959, SLV-4 launched Vanguard 2 (weighing 10.8 kg (23.7 lb)) into orbit. The SLVs were the "production" Vanguard rockets. SLV-5 and -6 also failed, but the final flight on September 18, 1959 successfully orbited the 23.6 kg (52 lb) Vanguard 3 satellite. That last mission was designated TV-4BU, because it used a remaining test vehicle, which had been upgraded with a new third stage, the Allegheny Ballistics Lab X-248A2 Altair. This more powerful motor enabled the launch of the heavier payload. The combination of the AJ10 liquid engine and X-248 solid motor was also used, under the name Able, as an upper stage combination for Thor and Atlas space launch vehicles. is the 36th day of the year in the Gregorian calendar. ... Jan. ... is the 76th day of the year (77th in leap years) in the Gregorian calendar. ... Jan. ... The Jupiter-C Intermediate Range Ballistic Missile (IRBM) was designed by the Army Ballistic Missile Agency (ABMA) The vehicle consists of a modified Redstone ballistic missile with three solid-propellant upper stages. ... The Jupiter-C Intermediate Range Ballistic Missile (IRBM) was designed by the Army Ballistic Missile Agency (ABMA) The vehicle consists of a modified Redstone ballistic missile with three solid-propellant upper stages. ... Explorer-I, officially known as Satellite 1958 Alpha, was the first United States Earth satellite and was sent aloft as part of the United States program for the International Geophysical Year 1957-1958. ... Vanguard 1 was the fourth artificial satellite launched, and is the oldest still orbiting Earth, though there is no longer any communication with it. ... is the 48th day of the year in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... // Vanguard 2 or Vanguard II was an earth-orbiting satellite designed to measure cloud-cover distribution over the daylight portion of its orbit. ... is the 261st day of the year (262nd in leap years) in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Mission Objectives Vanguard 3 was launched by a Vanguard rocket from the Eastern Test Range into a geocentric orbit. ...


Mission

In August 1955, the DOD Committee on Special Capabilities chose the NRL proposal as it appeared most likely, by spring 1958, to fulfill the following: Year 1955 (MCMLV) was a common year starting on Saturday (link displays the 1955 Gregorian calendar). ... The United States Department of Defense (DOD or DoD) is the federal department charged with coordinating and supervising all agencies and functions of the government relating directly to national security and the military. ... Jan. ...

  1. Place a satellite in orbit during the IGY
  2. Accomplish a scientific experiment in orbit
  3. Track the satellite and ensure its attainment of orbit

Project Vanguard was chosen from three proposals presented by the United States Air Force, the United States Army, and the United States Navy. The Army's ABMA under Dr. Wernher von Braun had suggested using a modified Redstone rocket (see: Juno I) while the Air Force had proposed using the untested Atlas rocket. Two bodies with a slight difference in mass orbiting around a common barycenter. ... The International Geophysical Year or IGY was an international scientific effort that lasted from July 1, 1957, to December 31, 1958. ... A magnet levitating above a high-temperature superconductor demonstrates the Meissner effect. ... In the scientific method, an experiment (Latin: ex- periri, of (or from) trying) is a set of observations performed in the context of solving a particular problem or question, to retain or falsify a hypothesis or research concerning phenomena. ... USAF redirects here. ... The United States Army is the largest, and by some standards oldest, established branch of the armed forces of the United States and is one of seven uniformed services. ... USN redirects here. ... Hermann Oberth (front) with officials of the ABMA in 1956. ... For other uses of von Braun, see von Braun (disambiguation). ... First launched in 1953, the American Redstone rocket was a direct descendant of the German V-2. ... The Jupiter-C Intermediate Range Ballistic Missile (IRBM) was designed by the Army Ballistic Missile Agency (ABMA) The vehicle consists of a modified Redstone ballistic missile with three solid-propellant upper stages. ... Mercury Atlas 9 rocket and capsule on pad The Atlas is a venerable line of space launch vehicles built by Lockheed Martin. ...


Launches

Vanguard launched 3 satellites out of 11 launch attempts:

Vanguard rocket explodes shortly after launch at Cape Canaveral (December 6, 1957).
Vanguard rocket explodes shortly after launch at Cape Canaveral (December 6, 1957).

Vanguard TV3 was the first U.S. attempt to launch a satellite into orbit around the Earth. ... is the 340th day of the year (341st in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ... is the 36th day of the year in the Gregorian calendar. ... Jan. ... Vanguard 1 was the fourth artificial satellite launched, and is the oldest still orbiting Earth, though there is no longer any communication with it. ... is the 76th day of the year (77th in leap years) in the Gregorian calendar. ... Jan. ... is the 118th day of the year (119th in leap years) in the Gregorian calendar. ... Jan. ... is the 147th day of the year (148th in leap years) in the Gregorian calendar. ... Jan. ... is the 177th day of the year (178th in leap years) in the Gregorian calendar. ... Jan. ... is the 269th day of the year (270th in leap years) in the Gregorian calendar. ... Jan. ... // Vanguard 2 or Vanguard II was an earth-orbiting satellite designed to measure cloud-cover distribution over the daylight portion of its orbit. ... is the 48th day of the year in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... is the 103rd day of the year (104th in leap years) in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... is the 173rd day of the year (174th in leap years) in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Mission Objectives Vanguard 3 was launched by a Vanguard rocket from the Eastern Test Range into a geocentric orbit. ... is the 261st day of the year (262nd in leap years) in the Gregorian calendar. ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Image File history File links Download high resolution version (2400x3000, 1151 KB) Original image caption: Test of Vanguard launch vehicle for U.S. International Geophysical Year (IGY) program to place satellite in Earth orbit to determine atmospheric density and conduct geodetic measurements. ... Image File history File links Download high resolution version (2400x3000, 1151 KB) Original image caption: Test of Vanguard launch vehicle for U.S. International Geophysical Year (IGY) program to place satellite in Earth orbit to determine atmospheric density and conduct geodetic measurements. ... This article is about the area of Florida. ... is the 340th day of the year (341st in leap years) in the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ...

Specifications

  • Stage Number: 1 - Vanguard
    • Mass: 7,661 kg
    • Empty Mass: 811 kg
    • Thrust (vac): 134.7 kN
    • Isp: 270 s (2.6 kN·s/kg)
    • Burn time: 145 s
    • Isp (sea level): 248 s (2.4 kN·s/kg)
    • Diameter: 1.14 m
    • Span: 1.14 m
    • Length: 12.20 m
    • Propellants: Lox/Kerosene
    • Engines: X-405
  • Stage Number: 2 - Delta A
    • Mass: 2,164 kg
    • Empty Mass: 694 kg
    • Thrust (vac): 33.8 kN
    • Isp: 271 s (2.7 kN·s/kg)
    • Burn time: 115 s
    • Diameter: 0.84 m
    • Span: 0.84 m
    • Length: 5.36 m
    • Propellants: Nitric acid/UDMH
    • Engines: AJ10-118
  • Stage Number: 3 - Vanguard 3
    • Mass: 210 kg
    • Empty Mass: 31 kg
    • Thrust (vac): 11.6 kN
    • Isp: 230 s (2.3 kN·s/kg)
    • Burn time: 31 s
    • Isp (sea level): 210 s (2.1 kN·s/kg)
    • Diameter: 0.50 m
    • Span: 0.50 m
    • Length: 2.00 m
    • Propellants: Solid
    • Engines: GCRC

See also

Vanguard 1 was the fourth artificial satellite launched, and is the oldest still orbiting Earth, though there is no longer any communication with it. ... // Vanguard 2 or Vanguard II was an earth-orbiting satellite designed to measure cloud-cover distribution over the daylight portion of its orbit. ... Mission Objectives Vanguard 3 was launched by a Vanguard rocket from the Eastern Test Range into a geocentric orbit. ... The Explorer program was the United Statess first successful attempt to launch an artificial satellite . ... Sputnik redirects here. ... Based on its experiments with captured German V-2 rockets after WWII, the United states decided to develop its own liquid fueld rocket. ...

External links


  Results from FactBites:
 
Vanguard (779 words)
Vanguard 1 was the second American satellite and the third spacecraft overall to achieve Earth orbit.
Although the Vanguard project was short-lived and best remembered for one of the most spectacular failures in aerospace history, the Vanguard rocket was significant to the genesis of the American space program.
Vanguard technology even found its way into the Apollo program, with a modified Vanguard upper stage forming the basis of the second stage of the Atlas-Antares, a rocket used to test various Apollo reentry vehicle designs.
Vanguard rocket - Wikipedia, the free encyclopedia (1086 words)
Vanguard SLV 2 - June 26, 1958 - Failed to orbit 10.0 kg (22 lb) satellite
Vanguard SLV 3 - September 26, 1958 - Failed to orbit 10.0 kg (22 lb) satellite
Vanguard SLV 6 - June 22, 1959 - Failed to orbit 10.3 kg (22.7 lb) satellite
  More results at FactBites »


 

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