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·..For all young men who aspire to be rocket scientists someday, this article is for you; this blogger lifted this declassified account of the first ever mission Jupiter C in January 1958, of the United States in response to the successful, Sputnik I put into orbit by the Soviet Union.
This is contained in Ken Follett’s novel, “Code Zero,” the exciting thriller of Claude Lucas, known to his friends as Luke. He wakes up two days before the launch of Jupiter C, to find his memory erased (global amnesia). He sets out on a quest to find out what it is that was erased from his memory. Moreover, he discovers that his best friend, Anthony of the CIA, has put out a order to silence him forever. What follows is his attempt to remember what he has lost and in the process change some rash actions that happened in his past life. Enjoy the story!
The historical fact:
January 31,
1958
The first American satellite, Explorer 1, was launched into Earth’s orbit on a Jupiter C missile from Cape Canaveral, Florida. Aboard Explorer 1 were a micrometeorite detector and a cosmic ray experiment designed by Dr. Van Allen and his graduate students. Data from Explorer 1 and Explorer 3 (launched March 26, 1958) were used by the Iowa group to make the first space-age scientific discovery: the existence of a doughnut-shaped region of charged particle radiation trapped by Earths magnetic field
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The jupiter C missile stands on the launch pad of Complex 26, Cape Canaveral(Kennedy). For secrecy, it is draped in dark canvas shrouds that hide everything but its tail, which is that of the Army’s
familiar Redstone rocket. But the rest of it under the concealing cloak is quite unique … The rocket is surrounded on three sides by a sevice gantry that holds it in a steel embrace. The gantry, actually a converted oilfield derrick, is mounted on two sets of wheels that run on wide-gauge rails. The entire service structure, bigger than a town house, will be rolled back 300 feet before the launch.
···Stenciled on the side of the white rocket is the designation “UE” in huge black letters. This is a simple code–
| H |
U |
N |
T |
S |
V |
I |
L |
E |
X |
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
0 |
···–so UE is missile number 29. The purpose of the code is to avoid giving clues as to how many missiles have been produced.
···The missile is 68 feet 7 inches high, and it weighs 64,000 pounds on the launch pad–but most of that is fuel. The satellite itself is only two feet 10 inches long, and weighs just 18 pounds. Perched on top of the pointed nose of the Redstone rocket is what looks like a large birdhouse with a steeply pitched root and a flagpole stuck through its center. This section, about 13 feet long, contains the second, third, and fourth stages of the missile–and the satellite itself.
···The Jupiter C has been built for the Army by the Chrysler Corporation. The large rocket engine that propels the first stage is manufactured by North American Aviation, Inc. The second, third, and fourth stages have been designed and tested by the Jet Propulsion Laboratory near Pasadena. The first stage of the missile is attached to the second by explosive bolts wrapped abround by coil springs. When the booster is burned out, the bolts will detonate and the springs push the redundant first stage away.
···Because the missile was put together in a rush, the upper stages use a rocket motor that has been in production for some years, rather than a new design. The scientists have chose a small version of the tried-and-tested Sergeant rocket. The upper stages of the missile are powered by clustered assemblies of these small rockets, know as Baby Sergeants. The second stage consists of eleven Baby Sergeant rockets. in a ring around a central tube. The third stage has three Baby Sergeants. motors held together by 3 transverse bulkheads. On top of the third stage is the fourth, a single rocket, with the satellite in its nose. Each Baby Sergeants. motor is 4 feet long and 6 inches in diameter and weighs 59 pounds. Its motor burns for just 6 1/2 seconds. The Sergeant motors have undergone 300 static tests, 50 flight test, and 290 ignition-system firings without a failure.
···Each Sergeant motor has an igniter that consists of two electrical matches, wired in parallel, and a jelly roll of metal oxidant encased in a plastic sheath. The igniters are so sensitive that they have to be disconnected if an electrical storm comes within 12 miles of Cape Canaveral to avoid accidental firing. The igniters were not originally designed to be fired in a vacuum. For the Jupiter rocket, they have been redesigned so that: (i) the entire motor is sealed in an airtight container; (ii) in case that container should be breached, the igniter itself is also in a sealed container; and (iii) the igniter should fire in a vacuum anyway;. This multiple fail-safe is a design principle known as redundancy.
···The upper stages of the missile are contained in an aluminum tub with a cast magnesium base. The upper-stage tub rests on bearings, allowing it to spin during flight. It will rotate at about 550 revolutions per minute to improve accuracy. Rotating the second-stage hub stabilized the flight path by averaging the variations between the 11 individual small rocket motors in the clusters. A stroboscope was used to determine exactly where weights should be placed so that the spinning tub would be perfectly balanced–otherwise the inner cage would vibrate within the outer frame, causing the whole assembly to disintegrate.
···A tape programmer in the tub varies the speed of rotation of the upper stages between 450 rpm and 750 rpm to avoid resonance vibrations that could cause the missile to break up in space.
···The final stage, containing the satellite, is 80 inches long and only 6 inches across, and weighs just over 30 pounds, it is shaped like a stovepipe. The fourth-stage rocket is made of lightweight titanium instead of stainless steel.. The weight saving permits the missile to carry a critical extra 2 pounds of scientific equipment. The satellite is bullet-shaped, rather than spherical,. In theory, a sphere should be more stable, but in practice the satellite must have protruding antennae for radio communication, and the antennae spoil the round shape.Scientists can only guess at the extremes of heat and cold the satellite will suffer in space as it moves from the deep darkness of the earth’s shadow into the glare of naked sunlight. To mitigate the effects of this, the cylinder is partially coated with shiny aluminum oxide in stripes 1/8 of an inch wide, to reflect the sun’s scorching rays, and insulated with glass fiber, to keep out the ultimate cold of space.
···The temperature problem is a key obstacle to manned space flight. To gauge the efficacy of its insulation, the Explorer carries four thermometrs: three in the outer shell, to measure skin temperature, and one inside the instrument compartment, to give the interior temperature. The aim is to keep the level between 40 to 70 degrees Fahrenheit–a comfortable range for human survival.
··· If temperature variations are higher than expected, it is possible that the germanium transistors, will overheat, the mercury batteries will freeze, and the satellite will fail to transmit data back to earth.The instrument compartment has no doors or access hatches. To work on equipment inside, engineers of Cape Canaveral have to lift the entire cover. This is awkward but saves precious weight, a critical factor in the struggle to break free of earth’s gravity. The instrument compartment tends to everheat prior to takeoff The solution to this problem is typical of the crude but effective engineering of the rushed Explorer project. A container of dry ice is attached electromagnetically to the outside of the rocket. A thermostat switches on a fan whenever the compartment gets warm Just before takeoff, the magnet is disconnected and the cooling mechanism falls to the ground.
···The design of the rocket is based on the V2 bomb used against London during the war. The engine even looks the same. accelerometers, relays, and gyros are all out of the V2. The pump for the propellant uses hydrogen peroxide passed over a cadmium catalyst, releasing energy which drives a turbine–and this, too, comes from the V2. The Jupiter program cost 40 million dollars in 1956 and 140 million in 1957. In 1958 the figure is expected to be more than 300 million The Jupiter C missile uses Hydyne, a secret high-energy fuel that is 14 percent more powerful than the alcohol propellant used in the standar Redstone missile. A toxic corrosive substance, it is a blend of UDMH–unsymmetrical dimethyl hyddrazine–and diethylene triamine.
···The new fuel is based on a nerve gas and is very dangerous. It is delivered to Cape Canaveral on a special train equipped with nitrogen to balnket it if any escapes. A drop in the skin will be absorbed into the bloodstream instantly and will be fatal. The technicians say: “If you smell fish, run like hell.” The new fuel and a larger fuel tank have boosted the Jupiter’s to a force of 83,000 pounds and extended the burning time from 121 seconds 155 seconds. The fuel tanks contain baffles to prevent sloshing. Without the baffles, the movement of the liquid is so violent that it caused a test missile, Jupiter 1B, to disentegrate after 93 seconds of flight. Fuel shoots into the combustion chamber of a rocket engine at a speed of about 100 feet per second. Burning begins the instant the the fuels meet. The heat of the flame soon evaporates the liquids. Pressure rises to several hundred pounds per square inch, the temperature soars to 5,000 degrees Fahrenheit. The first stage contains approximately 25,000 kilograms of fuel. This will be used up in 2 mintes and 35 seconds. The exhaust gases pass through the nozzle of the rocket like a cup of hot coffee being poured down the throat of a snowman.
···The smaller rockets, which power the second, third and last stages, use a solid fuel known as T17-E2, a polysulfide with ammonium perchlorate as oxidizer. Each rocket generates about 1,600 pounds of thrust in space. The missile will take off vertically, then be tilted into a trajectory 40 degrees inclined to the horizon. The first stage is guided, during powered flight, by aerodynamic tail surfaces and by movable carbon vanes in the engine exhaust jet. The flight plan is programmed in advance. during flight, signals telemetered to the computer activate the guidance system to keep it on course. The Explorer’s orbit will be 34 degrees to the equator. Relative to the earth’s surface, it will head southeast across the Atlantic Ocean to the southern tip of Africa, then northeast to the Indian Ocean and Indonesia to the Pacific.
···The first stage engine must be switched off sharply, and separated immediately, otherwise gradual thrust decay could cause the first stage to catch up with the second and misalign it. As soon as pressure drops in the fuel lines, the valves are closed, and the first stage is separated 5 seconds later by detonation of spring-loaded explosive bolts. The springs increase the speed of the second stage by 2.6 feet per second, ensuring that it separates cleanly. A system of compressed-air nozzles, mounted in the tail of the instrument compartment, will control the tilt of the nose section when in space. After discarding the burned-out first stage, the missile will coast through a vacuum trajectory while the spatial-attitude control system aligns it so that it is exactly horizontal with respect to the earth’s surface. Explorer’s elliptical orbit will take it as far as 1,800 miles into space and swing it back within 187 miles of the earth’s surface. Orbiting speed of the satellite is 18,000 mph. The satellite contains two tiny radio transmitters powered by mercury batteries no bigger than flashlight batteries. Each tranmitter carries four simultaneous channels of telemetry. One radio transmitter is powerful but short-lived–it will be dead in two weeks. The weaker signal from the second will last two months. The radio signal from the more powerful transmitter may be picked up by radio hams all over the world. The weaker signal from the second can be picked up only by specially equipped stations.The scientific instruments onboard the satellite have been designed to whitstand takeoff pressure of more than 100 gravities. The telemetry encoder uses hysteresis loop core materials to establish a series of input parameters from satellite instruments. Four whip antennae, protruding from the satellite cylinder, broadcast radio signals to receiving stations around the globe. Explorer will broadcast on a frequency of 108 MHz. The first task of the radio transmitters is to provide signals enabling the satellite to be followed by tracking stations on earth–to prove that it is in orbit. To help track the satellite accurately, the Jet propulsion Laboratory has developed a new radio technique called Microlock. The Microlock stations use a phased-lock loop tracking system that is able to lock on to a signal of only 1/1000 of a watt from as far as 20,000 miles away. A string of tracking stations stretches from north to sourth roughly along the line of longitude 65 degrees west of the Greenwich meridian. The network will receive signals from the satellite every time it passes overhead. Information from the satellites’s recording instruments is transmitted via radio by a musical tone. The different instuments use tones of different frequencies, so that the “voices” can be separated, electronically, when they are received. The main scientific purpose of the satellite is to measure cosmic rays, in an experiment designed by Dr. James Van Allen of the Stae Univerity of Iowa. The most importan instrument inside it is a Geiger counter. The countdown reaches zero.
···In the blockhouse, the launch conductor says, “Firing command!” A crewman pulls a metal ring and twists it. This is the action that fires the rocket. Prevalves open to let the fuel start flowing. The liquid oxygen vent is closed, and the halo of white smoke around the missile suddenly vanishes. The launch conductor says, “Fuel tanks pressurized.” For the next eleven seconds, nothing happens.
···The last connection hose drops away from the missile. A second later, the priming fuel ignits, and the first-stage engine thunders into life. A huge orange firelick bursts from the base of the rocket as thrust builds. With painful slowness, Explorer I lifts off the launch pad in the blockhouse, someone yells, “Go baby!” The rocket picks up speed suddenly. At one instant it seems to be hovering hesitantly over the launch pad. At the next it moves like a bullet out of a gun, shooting into the night sky on a tail of fire. On the beach, a thousand faces tip backward, watching the rocket rise straight and true, and a huge cheer goes up.
···Explorer I was expected to remain in space for two to three years. In fact it orbited the earth for twelve years. On March 31, 1970, it finally reentered the atmosphere over the Pacific Ocean near Easter island, and burned up at 5:47 A.M., having circled the earth 58,376 times and traveled a total of 1.66 billion miles.
Come aboard, Paolo Z., space awaits you and your offspring!
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