1957 – The Year the
Space Age Began
Roger L. Easton, retired Naval Research Laboratory
Linda Hall Library Kansas City MO 6 September 2007
Conditions in 1957
z Much different from now, slower, more optimistic in some ways
z Simpler, yet very frightening, time
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1957 in Politics
z January 20: Second
Presidential Inauguration of Dwight Eisenhower
1957 in Toys
z First “Frisbee” from
Wham-O
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1957 in Sports
z Third Year of Major League Baseball in
Kansas City
z the “Athletics,” not the “Royals”
1957 in Sports
z No pro football in
Kansas City
z AFL was three years in future
z no Chiefs until 1963
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1957 at Home
z No microwave ovens
z (TV dinners since 1954)
z Few color television sets
z (first broadcasts late in 1953)
z No postal Zip Codes z Circular phone diales
z No cell phones z (heck, no Area Codes, no direct long-distance dialing!)
z No Internet, no personal computers z Music recorded on vinyl discs, not compact or computer disks
1957 in Transportation
z Gas cost 27¢ per gallon
z September 4:
Introduction of the
Edsel by Ford
Motor Company
z cancelled in 1959 after loss of $250M
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1957 in Transportation
z October 28: rollout of first production Boeing 707
1957 in Science
z International Geophysical Year (IGY)
z (actually, “year and a half”)
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IGY Accomplishments
z South Polar Stations established
z Operation Deep Freeze
z Discovery of mid-ocean submarine ridges
z evidence of plate tectonics
z USSR and USA pledged to launch artificial satellites (“man-made moons”)
z discovery of Van Allen radiation belts
1957: “First” Year of Space Age
z Space Age arguably began in 1955
z President Eisenhower announced that USA would launch small unmanned earth-orbiting satellite as part of IGY
z Project Vanguard
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Our Story:
z The battle to determine who would launch the first artificial satellite:
z Werner von Braun of the U.S. Army Redstone
Arsenal, Huntsville AL
z Milton Rosen of the U.S. Naval Research
Laboratory, Washington DC
Rockets in WWII
z German V-2 Missiles attacked London
z German missile experts brought to USA for Operation “Paperclip”
z Best known was Dr.
Werner Von Braun
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Post WWII Rocket Experiments
z Milton Rosen used V-2s as launch vehicles for scientific experiments
z Needed more performance z Proposed improved vehicle
z led to Viking Rocket
Viking Rocket
z 1949, built for NRL by Glenn L. Martin Co. z Important innovations in Viking:
z gimbaled rocket motor for steering z aluminum as principal structural material z intermittent gas jets for stabilizing vehicle after the main power cutoff
z Launches
z Viking No. 1, spring 1949, 50-mile altitude z Viking No. 4, May 1950 from ship, 104 miles
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Scientific Results from Viking
z NRL Electron Optics Branch
z ion chambers and photon counters to measure radiation from sun at x-ray and ultraviolet wavelengths
z Single-Axis Phase-Comparison Angle-Tracking Unit
z antecedent of Minitrack
z Continuous tracking of small instrumented body in space
z Viking 10, April 1954, 136 miles, measured ion composition z Viking 11, May 1954, altitude of 158 miles radio
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Viking Results
z Five years of successes z Total cost less than $6 million z Encouraged NRL to propose a more powerful rocket engine and added upper stages to build vehicle capable of launching an artificial earth satellite
Project Vanguard
z Grew out of NRL Proposal z Led by Dr. John P. Hagen
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Vanguard Launcher & Satellite
z Efficient Three-stage launch vehicle
z Stage 1: based on Viking z Stage 2: based on Aerobee Sounding
Rocket z Stage 3: new solid-fuel rocket
z Innovative, Miniaturized Scientific
Payload z Planned IGY use: measure locations of Pacific islands
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Planned Vanguard Trajectory
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Solar Cell Batteries
z 6 units on sphere
Later Vanguard Spacecraft
z Larger spheres z More scientific equipment
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Plan for Tracking Vanguard
Satellite
z Remember, no worldwide tracking stations
z no communication network, not even telephones
z Would be difficult to ascertain whether satellite had orbited (hence, Project
Moonwatch)
z Satellite Tracking Program in Project
Vanguard:
z Minimum Trackable Satellite = Minitrack
Minitrack Antenna Array
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Minitrack Station, Blossom
Point, MD
Tracking Computer
z Vanguard
Computing Center
z in downtown DC
z IBM 704 “Electronic
Data-Processing Machine”
z Magnetic core memory (not vacuum tubes) z 40,000 = 40 × 103 instructions per second z fastest 2007 computers
z 300,000,000,000 =
300 × 109
Washington Post, July 10, 1957
instructions/second
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Competitor to Vanguard:
Project Orbiter
z Proposal by U.S. Army, led by Werner Von
Braun
z Believed his project was certain to be chosen
Orbiter Satellite & Launcher
z Launched by Army Redstone IRBM
z range of 200 miles, 55-mile vertical height
z Subsequent boost from 3 Rotating (for stability) clusters of unguided solid-fuelled Loki anti-aircraft rockets
z 2nd Stage: Bundle of 24 Loki, burns for < 2 sec z 3rd Stage: Bundle of 6 Loki
z 4th Stage: 1 Loki
z Switched to following Loki stage at intervals of 2.5 seconds (!)
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Project Orbiter Payload
z 5-pound, 20-inch diameter sphere
z no radio transmitter z would be tracked by optical telescopes ONLY
z difficult, not reliable
z No science – propaganda value only
z would only be able to say that USA had orbited a spacecraft
Launch Vehicle: Loki Rockets
z Unguided, solid-fueled rocket z Based on German Taifun from WWII z Loki failed in antiaircraft role
z replaced by Nike-Ajax in September 1955
z Loki later used as a sounding rocket z Small payload: 3.2 kg z Dimensions:
z booster: 2.63m long × 76mm dia. z payload “dart:” 1.02m long × 35mm dia.
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Loki Rocket
“Dart”
Booster
Selection by “Stewart Committee”
z Chaired by Homer Stewart of Jet
Propulsion Laboratory
z Eight members to select proposal for funding
z Vote on August 3, 1955
z 1 member absent z 3 votes for Vanguard z 2 votes for Orbiter z 2 other members (“not rocket scientists”) voted with majority z Final vote: 5 to 2
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Reasons for Decision:
Deficiencies of Project Orbiter
z Very Limited Weight Capacity – 5 lbs. z Uncertain Optical Detection of Successful
Orbit
z Untested Launch Vehicle z Problems had not been fixed (at least, not well enough)
z Technological world had changed, but von
Braun had not
Plusses for Vanguard
z Launch vehicle based on Viking
z no interference with research in ballistic missile weaponry
z less tied to military vehicle
zgood for propaganda purposes
z Much better tracking system z Better scientific value z Innovative vehicle and payload
z also a “minus” ⇒ uncertainty and complexity
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Second Hearing by Stewart
Committee
z August 15, 1955 (12 days later) z Army memo had been circulated that criticized NRL satellite program for low probability of success and time required to develop launch vehicle
z In short, von Braun could not believe he and the Army had lost
Project Orbiter Killed
z September 9, 1955 z Army forbidden from launching satellites z NRL forbidden from soliciting scientific data from military missile programs
z Vanguard team could not believe it had won
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Vanguard Launch Sequence Vanguard Launch Sequence
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October 4, 1957: News Flash
Sputnik successfully launched into orbit
Five Scientific Objectives of
Sputnik
z to test method for orbiting an artificial satellite; z to provide information on density of atmosphere by calculating orbital lifetime;
z to test radio and optical methods of orbital tracking;
z to determine effects of atmospheric radio wave propagation; and
z to check methods for pressurizing satellite
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Sputnik I Rocket Booster
Track as seen in Washington, DC on night of 15 October 1957
Easily visible to unaided eye
Sputnik Radio Transmitters
z 20.005 MHz and 40.002 MHz z NRL converted Minitrack receivers at
Blossom Point Tracking Station from 108 MHz in two days
z New Antennas and Receivers installed z Worked well until someone “tidied up” the site
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Minitrack System Calibration
z Opportunity provided by surprise launch of
Sputnik
z Satellite’s orbit computed using Doppler shifts of radio transmissions
z After orbit established, NRL proposed
“illuminating” Sputnik with FM transmitter at Fort Monmouth, NJ
z Reflected signal used for calibration
z Led to idea of using “bistatic” radar to track orbiting bodies z Naval Space Surveillance System “Fence”
Navspasur Radar Sites
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Reaction to Sputnik
z Pressure from Press/Public/Politicians for
Vanguard to launch
z Launch of “Test Vehicles” considered point of national pride
z Revived/modified plan from U.S. Army
Test Vehicle 3 (TV-3)
z December 6, 1957 z Nationally televised z First-stage guidance failed z Satellite survived in
“working” order
z now in NASM
z TV-3B, 5 February 1958, second stage did not ignite
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Army Backup Plan
z small spacecraft carried by fourstage Jupiter-C launch vehicle
z based on Jupiter IRBM
z Contained Vanguard electronics package to appear as a scientific experiment
Explorer-I Launch, January 31, 1958
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Explorer-I Launch, January 31, 1958
Pickering, Van Allen, von Braun
Next Vanguard Attempt
z March 1958 z Test-Vehicle 4 (TV-4) + small satellite
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- 28
HAVE BALL,
WILL ORBIT
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Vanguard Test Vehicle (TV-4)
z Successfully launched March 17,
1958
z Stable orbit
z apogee: 3969 km z perigee: 650 km z Early predicted orbital life: 200 years
z 7-cell mercury battery, two radio transmitters, temperature sensor, six clusters of solar cells
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