The Viking dual orbiter/lander mission to Mars

The Viking dual orbiter/lander mission to Mars

Introduction

In the year 1964, NASA’s Viking project, with the aid of Mariner 4, both begun an operation to explore planet Mars. The Viking space ship recorded history in the world by being the first operation or American satellite to land as a spacecraft on Mars’ surface successfully. During the mission, there were mostly two spacecraft that were pretty similar and equivalently composed of several orbiters and Landers that were made (Apak 2008, p.187). Both the Landers and the orbiters fluttered in pairs and entered Mars with no troubles. The Landers moved downwards towards the planet’s surface, and the orbiter was at a similar time separated.

Mission

August 20^th, 1975, together the Lander and orbiter were instigated from Florida; this was the liberation of the first Viking, and Viking 2 later was released on 1975 September 9^th. The Landers and orbiters were correctly sterilized before commencing to avoid contagion for the organism present on Mars’ surface. The Viking one, which was the first spaceship, reached Mars June 19^th, 1976, while the second, which was the orbiter, landed Mars on August 7th, 1976. As the space traveler examined the necessary snapshots, it was outlined that the Mars’ site was necessarily proficient by the sector of verification of the Viking panel, which was well-thought-out after finalizing the anticipated landing trial (Zimbelman and others 1997, p. 4161). Viking 1 spaceship was declared to be hazardous as the associates of the panel scrutinized and considered the landing zone on July 20^th, 1976. The chief reason at the rear of this crisis was the slopes on the western that composed of the Planitia plains that are also known as gold plains at 48.0 longitudes and 22.3 degrees latitude. The operati0on of the Viking was decided to commence after 90 days of touchdown. But both orbiter and the Lander continued for enough period as was expected, approximately four years.

Viking orbiter

The spaceship Viking comprises of two space shuttles, the Lander and orbiter. Both weighed approximately 2326kg. The spaceship design was also affected by the Landers’ size that was gigantic and equivalently highly applauded by the investors. They also made sure that both spaceships last more prolonged periods (Minelli and others 2004, p. 255-262). The Mariner’s design was replicated due to the spacecraft of the planetary were modeled for the operation. The necessities of the long-lasting orbiters were reliant on being approximately 90-120 days subsequently touchdown successfully. Orbiters were declared best at that time as all criteria of landing engaged with the appeal of the panel taking care of consequences of the involved strategies accordingly. Orbiters also restricted the managed subsystem functioned with the assistance of inertia alongside with some yaw controller pitches and specifications. The assertiveness power system remained allied with the prickles of engine offered by system control, and the autopilot segment is responsible for commanding the engine when involved in all forms of troubles (Palluconi and Others 1977, p. 4249-4291). The system of sun lock vanished beside the system controller that can align the result and spacecraft spontaneously in the forfeiture of the subsystem of the Canopus. Team affiliates waited for the sign and twisted the gas furnish fragment for the Lander subsystem and another subsystem.

Viking Landers

The spacecraft’s Lander comprised of five schemes in which the body was Lander, base section, bio shield cap, parachute system, and subsystem of the aeroshell. The whole Lander measured approximately 3mtrs and an approximate weight of 576kg deprived of fuel injection. The Lander’s body was made on an elevated platform that is occupied with scientific subsystems and operators. Inside the Lander was a box fabricated of titanium alloys and aluminum that could be cloistered in the system of fiberglass and with the use of a cloth that will safeguard the spaceship from misplacing the system’s heat content (Klein 1979, p. 1655). The whole spacecraft is enclosed with plates right from the bottom to the top. The entire Lander was reinforced by three supports mounted on the body’s lowermost corners; legs were typically associated with the central strut right in all prospects from the frame gathering. The terminal detector was responsible for landing recorded at a gigantic speed in the landing phase of spaceship for the Landers. Also, it was directly situated nearby the system that was approximately 12km over the level of the surface. The Lander composed of 4 Doppler radars that assisted the whole entity to compute the vital aspects of the operation and the perspective of life on the universe and other edifices advantageous for humanity and system.

Achievements and challenges

Each Viking objective was needed to stay for 90 days after touchdown, but the orbiters and landers took years. Their information and images on Mars would describe our observation of the planet for the upcoming decades. The orbit Viking offered a window into Mars, uninhibited past. They captured volcanoes’ pictures and imaged prehistoric channels where deluges may have boomed in earlier history. The camera examined closer at the vast Valles Marineris, a rift cross on Mars’ equator approximate 2500 miles, taking photos of craters and landslide sites. The Lander sent its first images on the Earth immediately after landing and captured thousands more for researchers to process. Besides the experiment of seismometer that declined to deploy appropriately and early difficulties with a sampling pin, the experimentations on the panel the Lander continued to be healthy till the final day of transmission November 13th, 1982. The Viking 1 outcome showed researchers several surprises. Different rocks were indicating diverse origin, consistent with day-day weather conditions, the difference of wind speed between day and night. It also detected that the soil contains magnetic particles that researchers were unable to identify. The outcomes were very crucial as they gave a hint to the human on what to experience when making a journey red planet. Radiation, dust storms, and weather conditions are to be faced when the man decides to pay a visit to Mars.

Perhaps no other experiment of life has come under such analysis as those involved Viking 1 and 2. The landers had essential equipment on the project to discover life. In the 1970s, the outcomes were extensively seen as evidence that no experience was found. Discoveries in the past a small number of years have declared that finding in an uncertainty.  The experiment of life-detection was basically in three portions, but the most debated part is the one seeking microorganism within the Martian soil. The Viking 1 took a trickle of Martian soil. It was heated up to 500 degrees, and try to find out for any organic sign. Neither Viking 1 nor 2 found any organic compound.

But a burst of questions has been raised about those outcomes in decades since then. Were the experimentations suitable or sensitive enough to discover life? Were the results sufficient to discharge the existence of life? In 2006, scientists duplicated the trials using environments similar to Mars on Earth (such as Chilean desert and Antarctic valley), and organic compounds were detected at the levels invisible to the appliances, signifying that life existed there all the time.

Understanding the possibilities of past or present life in the solar system

A study done in 2010 speculated that Viking could have damaged the compounds of organic before detecting them. Scientists continued the assumption that landing sites for Viking had perchlorate, an element identified in Mars Phoenix in the year 2008. The scientist picked a handful of soil identical to the one in Mars known to have organic compounds and introduced perchlorate in it before heating. After heating, the outcomes indicated dichloromethane and chloromethane, which are the similar outcomes produced by Viking. The focus here is that organic compounds tend to break down when heated, meaning any mixture of organic could have been damaged in the experimentation. Organic compounds are not in themselves evidence of life, but a key pointer here on Earth. The scientist will go on the quest on the planet Mars Curiosity operation currently wandering the red planet. It should be well-known, though, that Mars Inquisitiveness is not intended to discover life. It was instead gathering for proof of habitability in the previous or current.

Conclusion

The Viking 1 and 2 operation controlled by NASA of the U.S was the first mission to space. It collected information and photographs that assisted in additional unknown knowledge. According to Viking 1and, two pieces of information is distinct that Martine soil in Mars contains organic compounds that were invisible to the instruments and were discovered after heating experimentation. From the trials, we get to understand the climatic conditions of Mars, which later assists in determining whether humankind can inhabit and explore its surface safely. It has also assisted in identifying whether life on Mars has ever existed, illustrate the geology and Mars’ climate, and to prepare humans to explore the planet. Research on Mars’ geology would assist the scientist in understanding well if the area nearby Curiosity’s landing was the habitable site.

References

3.9. Extended Viking mission to Mars termed successfully. (1982). COSPAR Information Bulletin, 1982(94), pp.66-67.

Anon, (2015). [Online] Available at http://www.jpl.nasa.gov/news/fact_sheets/viking.pdf [Accessed January 25th, 2015].

Apak, R. (2008). Life detection experiments of the Viking Mission on Mars can be best interpreted with a Fenton oxidation reaction composed of H2O2 and Fe2+ and iron-catalyzed decomposition of H2O2. Int.Jul Astrobiol., 7(3-4), p.187.

Cattermole, P. (2001). Mars. Oxford: Oxford University Press.

Corliss, W. (1974). The Viking mission to Mars. Washington: Scientific and Technical Information Office, National Aeronautics, and Space Administration.

Corliss, W. (1975). The Viking mission to Mars. Washington: Scientific and Technical Information Office, National Aeronautics, and Space Administration.

Craddock, R., Crumpler, L., Aubele, J., and Zimbelman, J. (1997). Geology of central Chryse Planitia and the Viking 1 landing site: Implications for the Mars Pathfinder mission. J. Geophys. Res., 102(E2), p.4161.

Frigeri, A., Federico, C., Pauselli, C., and Minelli, G. (2004). Identifying Wrinkle Ridges from Mars MGS and Viking Mission Data: Using GRASS GIS in Planetary Geology. Transactions in GIS, 8(2), pp.255-262.

Kieffer, H., Martin, T., Peterfreund, A., Jakosky, B., Miner, E., and Palluconi, F. (1977). Thermal and albedo mapping of Mars during the Viking primary mission. J. Geophys. Res., 82(28), pp.4249-4291.