THE MAGNIFICENT SEVEN
1. In September 1944 London was bombarded by the world's first
ballistic missile, V2, "Vengeance Weapon No. 2". It did not make
the slightest deflection in the course of the World War II, however
gave an impetus to brainwork of American and Soviet rocketeers.
In the course of Hermes operation in 1945 American agents secretly
took a group of German rocketeers away from the Soviets' occupation
zone. The group was headed by Walter Dornberger, the leader of the
Nazi missile project, and Werner von Braun, General Designer of A-4
missile (first name V-2). In addition, parts necessary for assembly
of one hundred of missiles were taken across the Atlantic.
2. Sergei Korolyov, who was sent to Germany with the same mission,
also managed to select some German specialists, documents and
materials. One of such engineers was Helmut Grettrup, Braun's
assistant in electronics. The last event on the "rocketry scene" in
'45 was a trial launch of several V-2s, organized by General
Eisenhower. Those launches were attended by the future General
Designer of the Soviet rockets, Sergei Korolyov. A little after the
ex-Allies cast the veil of secrecy and began to actively analyze
their trophies. Mr. Braun and his companions tested A-4 missile in
White) Sands, New Mexico. Korolyov did the same on Kapustin Yar
rocket range in Russia. Helmut Grettrup and 150 more engineers
designed G-1 rocket, based on A-4 prototype.
Mr. Korolyov and his teammates clearly saw weak spots of A-4,
however Stalin's order sounded unambiguously: the rocket had to be
duplicated without any modifications. On September 1947 the first
Soviet analogue, R- 1, was launched in Kapustin Yar.
Simultaneously, a new, improved missile was being designed, R-2. It
was commissioned in 1951. Laterthe experimental rocket R-3Aand its
following modification, R-5 were created. I_By the early '50s
Soviet rocketeers had enough experience creating one-stage
ballistic missiles. A group of German scientists headed by Mr.
Grettrup also presented their project in 1947. Although the project
offered quite advanced solutions, it was not approved and the
Germans were soon repatriated.
3. In 1947, Mr. M.K. Tikhonravov, a Head of the group studying
multistage rockets at the Research Institute of Artillery, proposed
to use a bunch, or a "packet" of R-3 rockets as the first stage.
This was named "packet design". During the years 1949-1950
Tikhonravov group designed a project of a two-stage packet-design
rocket. Calculations proved that this rocket was able to deliver
three tons to a distance of 3000 km and, what is more important, a
spacecraft could be lifted to the Earth orbit. In the beginning of
1953 the Soviet Government commanded to start a project on creation
of R-7, a two-stage intercontinental ballistic missile.
4. Concurrently with the creation of "the seven", a spacecraft was
also being designed. By the end of 1955 the preliminary project was
ready and creation of Sputnik began. According to the project, the
satellite had to weigh some 1400 kg and bear 300 kg of scientific
equipment. However, parameters of the supposed carrier did not
allow the lift this much load. The decision was made to cut the
weight of a satellite at the expense of scientific equipment.
5. As we remember, first-rate German specialists and parts of
rockets were brought to the United States. In 1946 at the White
Sands Range the first launch of A-4 rocket was made. The Americans
started developing their rocketry program and Werner von Braun had
no small share in it. He was the General Designer of a two-stage
rocket named Bumper, where A-4 itself served as the first stage. On
July 24,1950, Bumper was launched from a new range located on the
Canaveral Cape.
In the same year Research Center moved from the
White Sands to the Redstone Arsenal, located in Huntsville, Alabama
and Mr. Braun's team began to work on the Redstone rocket which
also was a further modification of A-4.
Back in Peenemuende, Germany Werner von Braun already matured plans
of orbiting a satellite for spying upon adversary. These were plans
to create a two-stage powerful rocket based on A-4, which would be
able to develop the first cosmic velocity with spaceborne payload.
That project died adorning.
In 1948 the Secretary of Defense of the U.S. announced the
intentions to orbit a shell-satellite in the nearest future, for
military purpose, of course. This project required colossal
expenses on both creation of a booster rocket and a spacecraft. It
was just about the time when semiconductor transistor was only
patented; electronics would have become miniature much later.
In 1951 members of the British Interplanetary Society issued their
work titled "Minimum Satellite", where a concept of orbiting of a
satellite was described at utilization of existing technologies and
components. One of the problems encountered by creators of a
two-stage rocket was startup of the second-stage engines in
weightlessness. Liquid propellant would not flow to where it was
necessary. To make a solid fuel stage, a completely new class of
solid propellants had to be created. In a packet design rocket the
engines of the both stages could be started up already on earth
which led to some loss in hoist capacity, but added much
robustness.
The Second International Geophysical Year was proclaimed since July
1957 through December 1958. Within the framework of this event the
U.S. and the USSR were going to launch their first satellites. The
Americans announced their intention in July 1955. The ad hoc
committee chose the Vanguard project, proposed by the Naval
Research Laboratory.
However, in 1955 Dwight Eisenhower, the then President of the U.S.,
announced about the priority of military projects. This made the
civil program Vanguard a matter of secondary importance. The Martin
Company (now Lockheed Martin), where Vanguard rocket was being
created, obtained the order on creation of Titan ballistic missile.
The most of the company's resources were retargeted to the military
project.
In February 1956 the Vanguard rocket was ready. The 'Martin Company
and NRL carried out a number of trial launches from December 1956
to October 1957. The launch of a satellite was scheduled to
December 1957.
While the Martin Company built their Vanguard, Mr. Braun's team
designed their Redstone rocket. A modified A-4 was used as the
first stage, the second and third ones were packets of solid
propellant accelerators. That rocket was first launched in
September 1956. The carrier delivered a dummy warhead over a
distance of 5300 kilometers.
6. In 1955 near Tyura-Tam station in Kazakhstan construction of a
rocket range began, which later became Baikonur Spaceport. On May
15 the first "seven" started from this range. The first three
launches failed. On August 21 the fourth launch was made. The
rocket successfully started and several days after the debris of
its head were found in prescribed region on Kamchatka
Peninsula.
7. Americans realized that orbiting of the first satellite in the
USSR was a matter of weeks. They even called a conference devoted
to the subject. The conference was scheduled on October 4, 1957,
but a few hours later the world was told the news: the USSR was the
first state to launch an artificial satellite, Sputnik.
On December, 6 the Vanguard carrier exploded on a launchpad. The
first American satellite, Explorer I, was orbited on January
31,1958, by a modified Redstone carrier named Jupiter C.
The magnificent seven
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