Surveyor


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Surveyor Probes

Surveyor

A US unpiloted space program of the late 1960s that was designed to investigate the bearing strength, physical structure, and chemistry of the lunar regolith by means of trenching devices and alpha-scattering analysis (see table). The spacecraft were soft-landed by retrorockets. Each was equipped with a television camera, powered by solar cells, for panoramic photography. The maria were shown to have a basaltic composition, whereas the highlands were found to be richer in calcium and aluminum. See also Luna probes; Lunar Orbiter probes; Ranger; Zond probes.

Surveyor

 

the designation of a series of American spacecraft used in lunar exploration. The Surveyor program included studies to determine the mechanical characteristics, chemical composition, and electromagnetic properties of lunar soil and the thermal conditions on the surface of the moon. Television pictures of the lunar surface were obtained in order to study the topography and structure of the soil, laser emission transmitted from the earth was recorded, and astronomical investigations were conducted, including the photographing of stars, the sun, and the planets. “Surveyor” was also the name of the program for developing and launching the spacecraft in the period 1960–68. The engineering objective of the Surveyor program was the development of a system for soft landings.

The Surveyor spacecraft consisted of an engine module containing three liquid-propellant vernier rockets and a solid-pro-pellant retro-rocket, a power module with solar and chemical batteries, radio equipment, and guidance systems for flight control and orientation. The scientific apparatus included an alpha-particle scatterer and analyzer for determining the chemical composition of the lunar soil from reflected alpha particles (Surveyor 5, 6, and 7), a scoop for investigating the mechanical properties of the lunar soil (Surveyor 3, 4, and 7), instruments for detecting magnetic substances in the soil (Surveyor 4, 5, 6, and 7), and a television camera for photographing the moon in the approach area (Surveyor 1 and 2). A panoramic television camera for taking photographs after the landing on the moon was installed in all Surveyor spacecraft; a total of 86,500 photographs of the lunar surface, the sun, and the planets was taken.

The maximum diameter of all Surveyor spacecraft (measured across the extended supports of the landing chassis) was 4.27 m; the height (with chassis folded) was approximately 3 m; the weight at launch was 995–1,038 kg; and the weight after landing was 276–297 kg. An Atlas-Centaur launch vehicle was used for the launching. A total of seven spacecraft were launched in the period 1966–68, of which Surveyor 1, 3, 5, 6, and 7 accomplished a soft landing and completed the assigned tasks.

G. A. NAZAROV

surveyor

One whose occupation is surveying, or who is otherwise skilled in the art.
References in periodicals archive ?
As long as there are interpretive guidelines, there will be as many differing interpretations as there are nursing home providers, surveyors, and courts.
Last year, the Mars Global Surveyor satellite detected a curious pattern of magnetic stripes in the Martian crust.
"I'm very pleased to have Surveyor assume responsibility for the software.
His two assistants are Batswana with certificate qualifications,' she added.Mr Salakae had wanted to know whether government was aware of the importance of using qualified and registered land surveyors in the construction of roads and other infrastructure in general.
But, payments of Insurance Claims without a Survey, having not been conducted by any Licensed Surveyors, had been conditioned to fact that No Government Licensed Surveyors would have been available to conduct a Physical Survey of the Claimed Interests within a Specified Limit of Distance from the Location of the Loss.
But the Institute of Surveyors of Kenya vehemently opposed the move saying it amounts to gagging its members.
After getting the map, the surveyor visits the land where he/she might take some measurements to ascertain that the measurements indicated on the maps are the exact measurements on the ground.The reconnaissance also enables the surveyor to plan his/her work in order to avoid setting boundaries that might conflict with buildings and other permanent structures.
(c) any instructions given to the insurance surveyor by the person engaging him, as to the facts to be assumed or other assumptions to be made by the insurance surveyor;
To become a quantity surveyor, you need a degree or professional qualification accredited by the RICS, which you can take at college or unviersity.
Senior project manager and quantity surveyor Lee Lloyd has experience of acting as employer's agent, contract administrator and fund surveyor while Alistair Smith is a graduate building surveyor.
SECP, in its letter dated 10 September 2014 to CCP, stated that the changes have been proposed to 'establish surveyors on better footing', 'to check casual entry and exit of the surveyors', and to 'develop an element of responsibility and sensitivity into the surveyor class.'