4 January 2004, 04:35 Ground UTC: The NASA Mars Exploration Rover A, named Spirit, landed on the surface of Mars within the large impact crater Gusev. The location of touch down and the starting point for the rover’s exploration of Mars is named Columbia Memorial Station.
© 2017, Bryan R. Swopes
4 January 1959: At approximately 16:40 UTC, the Soviet automatic space probe First Cosmic Ship came within 5,995 kilometers (3,725 miles) of the Moon. It was the first man-made craft to arrive in the vicinity of Earth’s natural satellite.
First Cosmic Ship (which was later known as Мечта (Mechta, “Dream”) and today is called Luna 1) was launched from the Scientific-Research Test Range No. 5 at Tyuratam, Kazakhstan (later named the Baikonur Cosmodrome) at 16:41:21 UTC, 2 January 1959, aboard an 8K72 three-stage launch vehicle.
Mechta was the fourth in a series of lunar probes, and was intended to impact the surface of the Moon. It was spherical with several antennas, and weighed 361 kilograms (795.9 pounds). The probe carried a magnetometer, Geiger counter, scintillation detector and micrometeorite detector. It was powered by batteries. Radio telemetry equipment relayed the data to Earth.
It was intended that the spacecraft would impact the lunar surface, but an error in programming the third stage burn time caused a near miss. After 34 hours of flight, the probe passed within 5,995 kilometers (3,725 miles) of the lunar surface. It then entered a solar (heliocentric) orbit between Earth and Mars, where it remains today, circling the Sun every 450.0 days.
The Vostok-L 8K72 was a modified R-7 Semyorka intercontinental ballistic missile. The R-7 rocket was designed by Sergei Pavlovich Korolev, known as The Chief Designer.
The 8K72 version consisted of two core stages with four external boosters. The first stage and each of the boosters were powered by a four-nozzle RD-107 rocket engine burning kerosene and liquid oxygen. Total thrust was approximately 1,100,775 pounds. The second stage used a RD-0105 engine, producing 11,015 pounds of thrust. The Luna 1 was propelled by a third stage which remained attached during the translunar coast phase of flight.
The first two stages were 30.84 meters (101.18 feet) high and weighed 277,000 kilograms (610,680 pounds). The Luna 1 third stage weighed 1,472 kilograms (3,245 pounds), empty. It was 5.2 meters (17.06 feet) long with a diameter of 2.4 meters (7.87 feet).
The 8K72 rocket was capable of launching a 4,000 kilogram (8,818.5 pound) payload into Low Earth Orbit. The last launch of an 8K72 was in 1960, but the current Soyuz launchers are based on this early rocket.
Luna 1 was the first space vehicle to reach escape velocity and leave Earth’s gravitational field; the first to reach the vicinity of the Moon, and the first man-made device to orbit the Sun.
© 2019, Bryan R. Swopes
The Mariner 4/Agena D separated from the first stage Atlas booster at 14:27:23 UTC. A 2 minute, 24 second burn placed the Mariner/Agena in an Earth orbit. At 15:02:53, a one minute, 35 second burn placed the vehicle into a Mars Transfer Orbit. Mariner 4 separated from the Agena D at 15:07:09 UTC. Mariner then went into cruise mode.
The mission of Mariner 4 was to “fly by” Mars to take photographic images and gather scientific data, then relay this to tracking stations on Earth. The spacecraft carried an imaging system, cosmic dust detector, cosmic-ray telescope, magnetometer, radiation detector, solar plasma probe and an occultation experiment.
Mariner 4 overall height, including the mast, was 289 centimeters. The body of the spacecraft had a width of 127 centimeters (4 feet, 2 inches) across the diagonal, and was 45.7 centimeters (1 foot, 6 inches high. 260.8 kilograms (118.3 pounds). Power was supplied by four solar panels, each 176 centimeters (5 feet, 9.3 inches) long and 90 centimeters (2 feet, 11.4 inches) wide. The panels had 28,224 individual solar cells capable of producing 310 watts at Mars.
The LV-3 was 65 feet (19.812 meters) long from the base to the adapter section, and the tank section is 10 feet (3.038 meters) in diameter. The complete Atlas-Agena D orbital launch vehicle is 93 feet (28.436 meters) tall. When ready for launch it weighed approximately 260,000 pounds (117,934 kilograms).
The second stage was an Agena D, built by Lockheed Missiles and Space Systems, Sunnyvale, California. The Agena D was 20 feet, 6 inches (6.299 meters) long and had a maximum diameter of 5 feet, 0 inches (1.524 meters). The single engine was a Bell Aerosystems Company LR81-BA-11, with 16,000 pounds of thrust (71.1 kilonewtons). It was also liquid fueled, but used a hypergolic mixture of nitric acid and UDMH. This engine was capable of being restarted in orbit.
Mariner 4 made its closest approach to Mars, 9,846 kilometers (6,118 miles) on 15 July 1965. The final contact with the probe occurred on 21 December 1967.
© 2019, Bryan R. Swopes
22 October 1975, 05:13 UTC: The lander from the Soviet space probe Venera 9 touched down on the surface of the planet Venus, at approximately 32° south latitude, 291° east longitude.
The images and other data was transmitted to an orbiting section of Venera 9 for relay to Earth. The lander sent signals for approximately 53 minutes before the orbiter traveled out of range.
Venera 9 had been launched from the Baikonur Cosmodrome aboard a Proton-K rocket, 8 June 1975. The space probe weighed 4,936 kilograms (10,882 pounds).
Once in orbit around Venus, the spacecraft separated into the orbiter and lander. As the lander descended to the surface, data was collected about the planet’s atmosphere. A 40-kilometer (25-mile) deep layer of clouds was studied. The cloud bases were about 35–40 kilometers (22–25 miles) above the surface. The clouds contained hydrochloric and hydrofluoric acid, bromine and iodine.
At the planet’s surface the atmospheric pressure was 90 times that of Earth’s. The temperature was measured at 485 °C. (905 °F.).
© 2016, Bryan R. Swopes
11 October 1958: At 08:42:13 UTC (3:42:13 a.m., Eastern Standard Time), Able 2 (later renamed Pioneer 1) was launched from Launch Complex 17A at the Cape Canaveral Air Force Station on the east coast of Florida., on a mission to orbit The Moon. The launch vehicle was Thor Number 130, DM-1812-6. The mission was carried out by the U.S. Air Force Ballistic Missile Division, the Advanced Research Projects Agency (ARPA), and the newly established National Aeronautics and Space Administration (NASA).
The Thor second stage shut down approximately 10 seconds earlier than planned. An accelerometer had cut off the engine because of an incorrect valve setting. As a result, the space probe did not achieve sufficient velocity to escape Earth’s gravity. It reached a maximum altitude of 71,303 miles (114,751 kilometers) at 11:42 UTC.
An attempt to insert the space probe into a 79,970 × 20,000 mile (128,699 × 32,187 kilometers) orbit failed. The internal temperatures were too cold for the stage’s batteries to ignite the solid fuel rocket engine. 43 hours after launch, Able 2 reentered the atmosphere at 03:46 UTC, 13 October 1958, over the South Pacific Ocean.
Designated Thor DM-19, the first stage was 60.43 feet (18.42 meters) long and 8 feet (2.44 meters) in diameter. Fully fueled, the first stage had a gross weight of 108,770 pounds (49,337 kilograms). It was powered by a Rocketdyne LR-79-7 engine which burned liquid oxygen and RP-1 (a highly-refined kerosene rocket fuel) and produced 170,565 pounds of thrust (758.711 kilonewtons). This stage had a burn time of 2 minutes, 45 seconds.
The lunar probe was the fourth stage of the Thor-Able launch vehicle. It was 74 centimeters (2 feet, 5.13 inches) in diameter, 76 centimeters (2 feet, 5.9 inches) long, and weighed 38.1 kilograms (83.996 pounds). The probe’s external shell was constructed of metal and fiberglass. It carried 11.3 kilograms (24.9 pounds) of instruments designed to measure magnetic fields, radiation and micrometeorites. It also carried an infrared camera system intended to obtain close-up images of The Moon’s surface. Pioneer 1 was spin-stabilized, turning 108 r.p.m.
The probe was equipped with a Thiokol TX-8-6 solid rocket engine to decelerate it for entry into lunar orbit. The rocket engine was the main structural component of the probe. There were 8 vernier rockets to correct its trajectory. The Thiokol TX-8 was produced at the U.S. Army’s Longhorn Army Ammunition Plant near Karnack, Texas. It was designed to power the GAR-1 Falcon radar-homing air-to-air guided missile (later designated AIM-4 Falcon). The rocket motor weighed 11 kilograms (24.3 pounds).
© 2024, Bryan R. Swopes