Skylab 3
Encyclopedia
Skylab 3 was the second manned
mission to Skylab
. The Skylab 3 mission started July 28, 1973, with the launch of three astronauts on the Saturn IB
rocket, and lasted 59 days, 11 hours and 9 minutes. A total of 1,084.7 astronaut-utilization hours were tallied by Skylab 3 astronauts performing scientific experiments in the areas of medical activities, solar observations, Earth resources and other experiments.
The manned Skylab missions were officially designated Skylab 2, 3, and 4. Mis-communication about the numbering resulted in the mission emblems reading Skylab I, Skylab II, and Skylab 3 respectively.
During the approach phase, problems developed in the Apollo
CSM's reaction control system, and a leak formed. The crew was able to safely dock with Skylab, but troubleshooting would continue with the problem. For the first time, an Apollo spacecraft would be rolled out to Launch Complex 39 for a rescue mission
, made possible by the ability for the station to have two Apollo CSMs docked at the same time. They eventually fixed the problem, and the rescue mission was never launched.
The crew, during their first EVA, installed the twin-pole sunshade, one of the two solutions for the destruction of the micrometeoroid shield during Skylab's launch to keep the space station cool. It was installed over the parasol, which was originally deployed through a porthole airlock during Skylab 2. Both were brought to the station by Skylab 2.
Skylab 3 continued a comprehensive medical research program that extended the data on human physiological adaptation and readaptation to space flight collected on the previous Skylab 2 mission. In addition, Skylab 3 extended the astronauts stay in space from approximately one month to two months. Therefore, the effects of flight duration on physiological adaptation and readaptation could be examined.
A set of core medical investigations were performed on all three Skylab manned missions. These core investigations were the same basic investigations that were performed on Skylab 2, except that the Skylab 3 inflight tests were supplemented with extra tests based on what researchers learned from the Skylab 2 science results. For example, only leg volume measurements, preflight and postflight stereophotogrammetry, and in-flight maximum calf girth measurements were originally scheduled for all three Skylab missions.
In-flight photographs from Skylab 2 revealed the "puffy face syndrome" which prompted the addition of in-flight torso and limb girth measurements to gather more data on the apparent headward fluid shift on Skylab 3. Other additional tests included arterial blood flow measurements by an occlusive cuff placed around the leg, facial photographs taken before flight and during flight to study the "puffy face syndrome", venous compliance, hemoglobin, urine specific gravity, and urine mass measurements. These inflight tests gave additional information about fluid distribution and fluid balance to get a better understanding of the fluid shift phenomena.
The Skylab 3 biological experiments studied the effects of microgravity on mice, fruit flies, single cells and cell culture media. Human lung cells were flown to examine the biochemical characteristics of cell cultures in the microgravity environment. The two animal experiments were entitled Chronobiology of Pocket Mice
and Circadian Rhythm in Vinegar Gnats
. Both experiments were unsuccessful due to a power failure 30 hours after launch, which killed the animals.
High school students from across the United States participated in the Skylab missions as the primary investigators of experiments that studied astronomy, physics, and fundamental biology. The student experiments performed on Skylab 3 included the study of libration clouds, x-rays from Jupiter, in-vitro immunology, spider web formation, cytoplasmic streaming, mass measurement, and neutron analysis.
The crew's health was assessed on Skylab by collecting data on dental health, environmental and crew microbiology, radiation, and toxicological aspects of the Skylab orbital workshop. Other assessments were made of astronaut maneuvering equipment and of the habitability of the crew quarters, and crew activities/maintenance experiments were examined on Skylab 2 through 4 to better understand the living and working aspects of life in space.
's Vitruvian Man
, retouched to remove the genitalia. In the background is a disk that is half-sun (including sunspots) and half earth to represent the experiments done on the flight. The patch has a white background, the crew's names and "Skylab II" with a red, white and blue border.
The wives of the crew secretly had an alternate graphic made of a 'universal woman' with their first names in place of the crew's. Stickers with this on them were put in lockers aboard the command module to surprise the crew.
at the Great Lakes Science Center
in Cleveland, Ohio
.
Human spaceflight
Human spaceflight is spaceflight with humans on the spacecraft. When a spacecraft is manned, it can be piloted directly, as opposed to machine or robotic space probes and remotely-controlled satellites....
mission to Skylab
Skylab
Skylab was a space station launched and operated by NASA, the space agency of the United States. Skylab orbited the Earth from 1973 to 1979, and included a workshop, a solar observatory, and other systems. It was launched unmanned by a modified Saturn V rocket, with a mass of...
. The Skylab 3 mission started July 28, 1973, with the launch of three astronauts on the Saturn IB
Saturn IB
The Saturn IB was an American launch vehicle commissioned by the National Aeronautics and Space Administration for use in the Apollo program...
rocket, and lasted 59 days, 11 hours and 9 minutes. A total of 1,084.7 astronaut-utilization hours were tallied by Skylab 3 astronauts performing scientific experiments in the areas of medical activities, solar observations, Earth resources and other experiments.
The manned Skylab missions were officially designated Skylab 2, 3, and 4. Mis-communication about the numbering resulted in the mission emblems reading Skylab I, Skylab II, and Skylab 3 respectively.
Crew
Backup crew
Support crew
- Robert L. CrippenRobert CrippenRobert Laurel Crippen is an engineer, retired United States Navy Captain and a former NASA astronaut. He flew on four Space Shuttle missions, including three as commander...
- Richard H. Truly
- Henry W. Hartsfield, JrHenry HartsfieldHenry Warren "Hank" Hartsfield, Jr. is a retired United States Air Force officer and a former USAF and NASA astronaut who logged over 480 hours in space.-Personal:...
- William E. ThorntonWilliam E. ThorntonWilliam Edgar Thornton is a former NASA Astronaut. Thornton was born in Faison, North Carolina, and is married with two sons to the former Elizabeth Jennifer Fowler of Hertfordshire, England.-Education:...
Mission parameters
- Mass: about 20121 kg (44,359.2 lb)
- Maximum Altitude: 440 km
- Distance: 24.5 million miles (39.4 million km)
- Launch Vehicle: Saturn IB
- PerigeePerigeePerigee is the point at which an object makes its closest approach to the Earth.. Often the term is used in a broader sense to define the point in an orbit where the orbiting body is closest to the body it orbits. The opposite is the apogee, the farthest or highest point.The Greek prefix "peri"...
: 423 km - Apogee: 441 km
- InclinationInclinationInclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...
: 50° - PeriodOrbital periodThe orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...
: 93.2 min
Docking
- Docked: July 28, 1973 - 19:37:00 UTC
- Undocked: September 25, 1973 - 11:16:42 UTC
- Time Docked: 58 days, 15 hours, 39 minutes, 42 seconds
Space walks
- Garriott and Lousma - EVA 1
- EVA 1 Start: August 6, 1973, 17:30 UTC
- EVA 1 End: August 7, 00:01 UTC
- Duration: 6 hours, 31 minutes
- Garriott and Lousma - EVA 2
- EVA 2 Start: August 24, 1973, 16:24 UTC
- EVA 2 End: August 24, 20:55 UTC
- Duration: 4 hours, 31 minutes
- Bean and Garriott - EVA 3
- EVA 3 Start: September 22, 1973, 11:18 UTC
- EVA 3 End: September 22, 13:59 UTC
- Duration: 2 hours, 41 minutes
Mission highlights
Project Apollo
The Apollo program was the spaceflight effort carried out by the United States' National Aeronautics and Space Administration , that landed the first humans on Earth's Moon. Conceived during the Presidency of Dwight D. Eisenhower, Apollo began in earnest after President John F...
CSM's reaction control system, and a leak formed. The crew was able to safely dock with Skylab, but troubleshooting would continue with the problem. For the first time, an Apollo spacecraft would be rolled out to Launch Complex 39 for a rescue mission
Skylab Rescue
Brand flew in 1975 during the Apollo-Soyuz Test Project as command module pilot, later commanding three Space Shuttle missions . Lind would wait another decade before he flew as a mission specialist on STS-51-B in 1985.-External links:* * * * * * *...
, made possible by the ability for the station to have two Apollo CSMs docked at the same time. They eventually fixed the problem, and the rescue mission was never launched.
The crew, during their first EVA, installed the twin-pole sunshade, one of the two solutions for the destruction of the micrometeoroid shield during Skylab's launch to keep the space station cool. It was installed over the parasol, which was originally deployed through a porthole airlock during Skylab 2. Both were brought to the station by Skylab 2.
Skylab 3 continued a comprehensive medical research program that extended the data on human physiological adaptation and readaptation to space flight collected on the previous Skylab 2 mission. In addition, Skylab 3 extended the astronauts stay in space from approximately one month to two months. Therefore, the effects of flight duration on physiological adaptation and readaptation could be examined.
A set of core medical investigations were performed on all three Skylab manned missions. These core investigations were the same basic investigations that were performed on Skylab 2, except that the Skylab 3 inflight tests were supplemented with extra tests based on what researchers learned from the Skylab 2 science results. For example, only leg volume measurements, preflight and postflight stereophotogrammetry, and in-flight maximum calf girth measurements were originally scheduled for all three Skylab missions.
In-flight photographs from Skylab 2 revealed the "puffy face syndrome" which prompted the addition of in-flight torso and limb girth measurements to gather more data on the apparent headward fluid shift on Skylab 3. Other additional tests included arterial blood flow measurements by an occlusive cuff placed around the leg, facial photographs taken before flight and during flight to study the "puffy face syndrome", venous compliance, hemoglobin, urine specific gravity, and urine mass measurements. These inflight tests gave additional information about fluid distribution and fluid balance to get a better understanding of the fluid shift phenomena.
The Skylab 3 biological experiments studied the effects of microgravity on mice, fruit flies, single cells and cell culture media. Human lung cells were flown to examine the biochemical characteristics of cell cultures in the microgravity environment. The two animal experiments were entitled Chronobiology of Pocket Mice
Little Pocket Mouse
The Little Pocket Mouse is a species of rodent in the Heteromyidae family. It is found in Baja California and Sonora in Mexico and in Arizona, California, Idaho, Nevada, Oregon and Utah in the United States...
and Circadian Rhythm in Vinegar Gnats
Drosophila melanogaster
Drosophila melanogaster is a species of Diptera, or the order of flies, in the family Drosophilidae. The species is known generally as the common fruit fly or vinegar fly. Starting from Charles W...
. Both experiments were unsuccessful due to a power failure 30 hours after launch, which killed the animals.
High school students from across the United States participated in the Skylab missions as the primary investigators of experiments that studied astronomy, physics, and fundamental biology. The student experiments performed on Skylab 3 included the study of libration clouds, x-rays from Jupiter, in-vitro immunology, spider web formation, cytoplasmic streaming, mass measurement, and neutron analysis.
The crew's health was assessed on Skylab by collecting data on dental health, environmental and crew microbiology, radiation, and toxicological aspects of the Skylab orbital workshop. Other assessments were made of astronaut maneuvering equipment and of the habitability of the crew quarters, and crew activities/maintenance experiments were examined on Skylab 2 through 4 to better understand the living and working aspects of life in space.
Mission insignia
The circular crew patch was Leonardo da VinciLeonardo da Vinci
Leonardo di ser Piero da Vinci was an Italian Renaissance polymath: painter, sculptor, architect, musician, scientist, mathematician, engineer, inventor, anatomist, geologist, cartographer, botanist and writer whose genius, perhaps more than that of any other figure, epitomized the Renaissance...
's Vitruvian Man
Vitruvian Man
The Vitruvian Man is a world-renowned drawing created by Leonardo da Vinci circa 1487. It is accompanied by notes based on the work of the famed architect, Vitruvius. The drawing, which is in pen and ink on paper, depicts a male figure in two superimposed positions with his arms and legs apart and...
, retouched to remove the genitalia. In the background is a disk that is half-sun (including sunspots) and half earth to represent the experiments done on the flight. The patch has a white background, the crew's names and "Skylab II" with a red, white and blue border.
The wives of the crew secretly had an alternate graphic made of a 'universal woman' with their first names in place of the crew's. Stickers with this on them were put in lockers aboard the command module to surprise the crew.
Spacecraft location
The Apollo Command Module used on Skylab 3 is currently on display at the visitor's center of the NASA Glenn Research CenterGlenn Research Center
NASA John H. Glenn Research Center at Lewis Field is a NASA center, located within the cities of Brook Park, Cleveland and Fairview Park, Ohio between Cleveland Hopkins International Airport and the Cleveland Metroparks's Rocky River Reservation, and has other subsidiary facilities in Ohio...
at the Great Lakes Science Center
Great Lakes Science Center
The Great Lakes Science Center is a museum and educational facility in downtown Cleveland, Ohio, United States.The center's exhibits focus on helping visitors to understand science, technology, and their interdependence with the environment. Many of the exhibits document the features of the natural...
in Cleveland, Ohio
Cleveland, Ohio
Cleveland is a city in the U.S. state of Ohio and is the county seat of Cuyahoga County, the most populous county in the state. The city is located in northeastern Ohio on the southern shore of Lake Erie, approximately west of the Pennsylvania border...
.
External links
- Skylab: Command service module systems handbook, CSM 116 - 119 (PDF) April 1972
- Skylab Saturn 1B flight manual (PDF) September 1972
- NASA Skylab Chronology
- Marshall Space Flight Center Skylab Summary
- Skylab 3 Characteristics SP-4012 NASA HISTORICAL DATA BOOK
- Source: http://lsda.jsc.nasa.gov/skylab/skylab3.stm
- NASA Glenn Research Center