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At the end of this block of study, you should be able to:
5.14 Discuss the use of balloons for scientific research.
5.15 Discuss the Explorer 2.
In the early 1900s, unmanned scientific balloons were reaching altitudes of 20
miles and increasing mankind's knowledge of Earth's atmosphere. Some of the first studies
of solar energy were conducted at this time. Even though several unmanned
balloons had reached into the stratosphere, this region of Earth's atmosphere during the
1920s and 1930s was an unknown and mysterious place.
A resurgence of highaltitude manned flights began in the 1920s. Although by no means
free of risk, crude oxygen equipment made these flights safer than those of the nineteenth
century. Two things made people want to risk their lives on the edge of space. One was for
the scientific knowledge and the other was for the competition to reach the highest
possible altitude, The flight of the Explorer 2, launched from
the Stratobowl near Rapid City, South Dakota, marked another end to highaltitude
ballooning until the late 1950s. The Explorer 2 reached an altitude of 72,395
feet, setting a record that lasted for 20 years. However, the lack of money and
the limit of balloon technology caused the scientific community to revert again
exclusively to unmanned stratospheric flights.
At the end of this block of study, you should be able to:
5.16 Discuss the National Balloon Races.
5.17 Discuss the International Gordon Bennett Race.
5.18 Discuss the use of barrage balloons in World War II.
5.19 Summarize the Japanese balloon bombing of the United States during World War II.
The balloon corps of the United States Army in the early 1900s laid the foundation for
America's military aviation. During World War I, all the major powers, Including the
United States, used tethered observation balloons. These balloons were used to gather
information on troop locations and movements, artillery spotting, and communications. So
Important were these balloons (they were heavily defended by antiaircraft weapons),
fighter pilots were given credit toward becoming an ace. In fact, Frank Luke, the American
ace and Medal of Honor winner, was known as the "Arizona Balloon Buster."
Following World War I, a revival of sport ballooning began. In St. Louis,
Missouri, on October 11, 1919, the National Balloon Races began. This race was
the premier American balloon race which was used to send American balloonists to the
International Gordon Bennett Race. The first Bennett race was held in 1906, halted
during World War I, resumed on October 23, 1920, and continued until the late 1930s when
war clouds started forming over Europe. The United States won ten of the races, followed
by Belgium with seven, Poland four, Germany and Switzerland with two each, and France with
one win.
During World War II, barrage balloons were tethered with strong cables to ships,
buildings, and other structures to keep airplanes at a greater height thus making it more
difficult to hit targets. If an enemy pilot did get too low, it was possible for the
airplane to hit the cable which was holding the balloon down and damage the airplane or
even cause it to crash.
Probably the least publicized use of balloons, but potentially one that could have caused
great death and destruction, was when the Japanese used them to bomb the United
States. Beginning on November 3, 1944, and ending in April 1945, Japan launched
9,300 balloons against the United States. Each balloon carried two to four incendiary
bombs and one antipersonnel bomb. The objective was to start forest fires in the Western
states and to cause fear and panic in the American public. The operation failed; a few
small grass fires were started and six people in Oregon were killed. Due to wartime
censorship, a great majority of the American population never heard about, let alone saw,
an enemy balloon. Of the 9,300 balloons launched, 200 confirmed landings occurred in the
United States (including Hawaii and Alaska), 78 in Canada, and 1 in Northern Mexico. Most
of the balloons landed in Oregon, British Columbia, Montana, California, and Washington,
with two balloons reaching as far as Michigan.
At the end of this block of study, you should be able to:
5.20 Explain the purpose of the Man High Program, the Strato-Lab Program, the GHOST
Program, and the Stratoscope II Program.
5.21 Explain the significance of ECHO I and a II.
5.22 Discuss the significance of the Double Eagle II and V.
After World War II, interest in highaltitude balloon research again surfaced. The high costs that helped kill flights In the 1930s were overcome with the use of the inexpensive l/1,000th-ofaninch polyethylene. In the 1950s there were several important scientific experiments and findings in the areas of cosmic radiation, ozone concentrations, carbon dioxide, radioactive dust rallied from aboveground nuclear testing, longrange weather forecasting, and many others. Manned highaltitude balloon flights resumed. The ManHigh I Program flights were designed to test highaltitude escape equipment and procedures that would be used in the new generations of high-altitude airplanes. In the ManHigh II Program, experiments were conducted to investigate the nearspace environment and Its effects on humans in preparation for spaceflight.
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MANHIGH II Balloon Gondola |
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The Strato-Lab Program was designed to conduct aeromedical research on
flight crews, astrophysical investigations, and geophysical observations. In addition,
studies of air pollutants and spectrographic and photographic studies of the Sun and Venus
were conducted.
Continuing into the decade of the 1960s, the use of balloons continued to expand
scientific knowledge. The Global Horizontal Soundings Techniques (GHOST) Program
was designed to trace global air circulation patterns by allowing balloons to drift with
wind currents at various altitudes.
The Stratoscope II Program was designed to repeatedly launch and retrieve
a 3 1/2ton astronomical observatory. It obtained high resolution celestial photos and
infrared spectral data on the Moon, Mars, and some redgiant stars.
Balloons went into space when the first one was launched by rocket on August 12,1960. Echo
I was a 100footdiameter, aluminumcovered, spherical balloon that was
put into orbit 1,000 miles above the Earth. This passive communications satellite was used
to bounce voice, music, and pictures from one part of the United States to another. It was
expected to stay up for one year but lasted for over eight years. Echo I was
followed by Echo II and other balloon satellites.
By 1970, there were over 500 yearly scientific highaltitude manned and unmanned balloon
launches in the United States. These flights were used to study aeronomy, solar physics,
astronomy, magnetic fields, cosmic dust, biology, and other areas of scientific interest.
The military again looked into using balloons for warfare. In the Pacific Northwest,
balloons were and are still used in logging operations. With a combination of cables and
pulleys, balloons are used to haul logs out of rugged and mountainous terrain.
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Scientific balloon launch from Antarctica |
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The first successful transatlantic balloon flight occurred on August 10, 1978, when Ben
Abruzzo, Maxie Anderson, and Larry Newman flew in the Double Eagle II.
It was launched from Presque Isle, Pennsylvania, and landed 3,120 miles and 137 hours
later in Miserey, France.
Opening the decade of the 1980s, Ben Abruzzo, Larry Newman, Ron Clark and Rocky Aoki made
the first successful manned balloon crossing of the Pacific Ocean. The Double
Eagle V was launched from Nagashima, Japan, and landed in Coorla,
California, during the middle of November 1981. The flight lasted 84 hours and covered
5,070 miles.
The use of balloons in weather forecasting, science, and sports continued in the 1980s and
early 1990s. Hotair ballooning has become an extremely popular and safe flying sport.
Tethered balloons are used to help stop drug smuggling in Puerto Rico and Texas. It
appears that those devices that first took men into the air will continue to do so far
into the future.
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Updated: 17 February, 1999