Milestone-Proposal:LORAN: Difference between revisions
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Period of interests: 1940 to 1946 when a new from of radio navigation is proposed, 1941 when R&D work begins, throughout WW2, to 1946 when LORAN is a well established engineered system globally. LORAN's service to just recently is treayed in ..... . | Period of interests: 1940 to 1946 when a new from of radio navigation is proposed, 1941 when R&D work begins, throughout WW2, to 1946 when LORAN is a well established engineered system globally. LORAN's service to just recently is treayed in ..... . | ||
Timeline 1940 to about 1945. why limited . | Timeline 1940 to about 1945. why limited . | ||
Rad Lab was able to step after loran was running on a firm fundation. | Rad Lab was able to step after loran was running on a firm fundation. | ||
Rad Lab's project involvement terminated when loran was on a solid foundation.. | Rad Lab's project involvement terminated when loran was on a solid foundation.. | ||
Jack Pierce's epic article published by the IEEE in 1946 is the prime source for the information here. | Jack Pierce's epic article published by the IEEE in 1946 is the prime source for the information here. | ||
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John (Jack) A. Pierce, who retired from a position as a senior research fellow at Harvard University, Cambridge, Mass. was awarded the Medal For Engineering Excellence in 1990 for the "design , teaching and advocacy of radio propagation, navigation and timing which led to the development of Loran, Loran C and Omega." In 1941, Pierce began working at the Massachusetts Institute of Technology's Radiation Laboratory which was testing the United States' first hyperbolic radio aid to navigation called Loran. It inaugurated in October 1942. Later work produced Loran C which operated at a lower frequency of 100 kHz. After WWII, he was appointed senior research fellow in applied physics at Harvard and from 1950 to 1974 did work on low frequency navigation aids that lead to Omega. | John (Jack) A. Pierce, who retired from a position as a senior research fellow at Harvard University, Cambridge, Mass. was awarded the Medal For Engineering Excellence in 1990 for the "design , teaching and advocacy of radio propagation, navigation and timing which led to the development of Loran, Loran C and Omega." In 1941, Pierce began working at the Massachusetts Institute of Technology's Radiation Laboratory which was testing the United States' first hyperbolic radio aid to navigation called Loran. It inaugurated in October 1942. Later work produced Loran C which operated at a lower frequency of 100 kHz. After WWII, he was appointed senior research fellow in applied physics at Harvard and from 1950 to 1974 did work on low frequency navigation aids that lead to Omega. | ||
Coast Guard Lt. Cmdr. L.M. Harding|a6= | Coast Guard Lt. Cmdr. L.M. Harding|a6=engineering for 99% reliability & maintenance issues | ||
Quote Pierce | |||
Having to locate loran transmitters (North Atlantic Chain) in remote wilderness areas was a big problem. Getting supplies to isolated stations, crews, MIT | |||
Cooperation with foreign countries was required to build stations in Labrador, Newfoundland, Greenland and Iceland. | Cooperation with foreign countries was required to build stations in Labrador, Newfoundland, Greenland and Iceland. | ||
As the program matured, the Rad Lab was able to step back and let more capable organizations, such as the USCG, take over site construction and system operations. By 1948, the Rad Lab had completed its mission. | As the program matured, the Rad Lab was able to step back and let more capable organizations, such as the USCG, take over site construction and system operations. By 1948, the Rad Lab had completed its mission. | ||
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"Development of technique and equipment for providing day-time service equal in radius to night-time service by use of a single high frequency...status: investigation of E-layer day-time transmission of high frequency has been completed and the use of a frequency of approximately 10.5 mcs. authorized. It is the opinion of Radiation Laboratory that this frequency will give a satisfactory day-time range of service from 800 to 1,300 miles although it is expected that the 10.5 mcs. signals will be some what weaker that 2 mc. signals. A program to obtain and modify transmitters and start a service test on this frequency will be started in the near future." | "Development of technique and equipment for providing day-time service equal in radius to night-time service by use of a single high frequency...status: investigation of E-layer day-time transmission of high frequency has been completed and the use of a frequency of approximately 10.5 mcs. authorized. It is the opinion of Radiation Laboratory that this frequency will give a satisfactory day-time range of service from 800 to 1,300 miles although it is expected that the 10.5 mcs. signals will be some what weaker that 2 mc. signals. A program to obtain and modify transmitters and start a service test on this frequency will be started in the near future." | ||
The experiments that had been in progress for some time in the Laboratory to develop an automatic synchronizer seemed also to begin bearing fruit as about this time one was developed which did not deviate nor lose control through high noise levels including electrical storms. Four of these units were being built by the laboratory and by July so confident were they of the worth of the auto-sync that the Laboratory placed an order for sixty of these units based on their prototype to be delivered around the end of 1943.|a7= | The experiments that had been in progress for some time in the Laboratory to develop an automatic synchronizer seemed also to begin bearing fruit as about this time one was developed which did not deviate nor lose control through high noise levels including electrical storms. Four of these units were being built by the laboratory and by July so confident were they of the worth of the auto-sync that the Laboratory placed an order for sixty of these units based on their prototype to be delivered around the end of 1943.|a7=Its important to note at this time that the work on the radio navigation project referred to as Project #3 or (Project C) undertaken by MIT did not take place at the famous "Radiation Laboratory" which remains the place where radar / microwave was born. Instead, the engineering team assigned to work on radio navigation moved into the Hood Building in Cambridge, close to but outside the MIT campus. | ||
The proposed milestone plaque could be mounted on MIT Building N42, on Massachusetts Avenue, close to where the original Hood Building used to be. The Boston Section Milestone Committee is currently seeking approval from MIT to carry this out | |||
Boston Section Milestone History Committee is currently seeking approval from MIT to carry this out. | Boston Section Milestone History Committee is currently seeking approval from MIT to carry this out. | ||
LORAN operators were trained somewhere in Boston. Transmitters and receivers were fabricated by large manufacturers located elsewhere.|a8=No|a9=The proposed plaque would be be wall-mounted outdoors, probably attached to MIT Building N42, alongside other plaques at 211 Massachusetts Avenue. The plaque would be readily visible to pedestrians walking on this public sidewalk. The Boston Section Milestone Committee is currently seeking approval from MIT to carry this out|a10=MIT|a11=No|a12=The Boston Section with support from local Society Chapters, and financial contributions from sponsors.|a13name=Bruce Hecht|a13section=Boston|a13position=2010 Chair|a13email=Bruce Hecht|a14name=Robert Alongi|a14ou=Boston Section|a14position=Section Business Manager|a14email=sec.boston@ieee.org|a15Aname=Gilmore Cooke|a15Aemail=gilcooke@ieee.org|a15Aname2=|a15Aemail2=|a15Bname=c/o Robert Alongi|a15Bemail=sec.boston@ieee.org|a15Bname2=To be assigned later|a15Bemail2=|a15Cname=Gilmore Cooke|a15Ctitle=retired PE|a15Corg=Boston Section Executive Committee|a15Caddress=8 Canvasback, W. Yarmouth, MA 02673|a15Cphone=617-759-4271|a15Cemail=gilcooke@ieee.org}}<br />[[Media:Pierce Loran.pdf|Pierce Loran.pdf]] | LORAN operators were trained somewhere in Boston. Transmitters and receivers were fabricated by large manufacturers located elsewhere.|a8=No|a9=The proposed plaque would be be wall-mounted outdoors, probably attached to MIT Building N42, alongside other plaques at 211 Massachusetts Avenue. The plaque would be readily visible to pedestrians walking on this public sidewalk. The Boston Section Milestone Committee is currently seeking approval from MIT to carry this out|a10=MIT|a11=No|a12=The Boston Section with support from local Society Chapters, and financial contributions from sponsors.|a13name=Bruce Hecht|a13section=Boston|a13position=2010 Chair|a13email=Bruce Hecht|a14name=Robert Alongi|a14ou=Boston Section|a14position=Section Business Manager|a14email=sec.boston@ieee.org|a15Aname=Gilmore Cooke|a15Aemail=gilcooke@ieee.org|a15Aname2=|a15Aemail2=|a15Bname=c/o Robert Alongi|a15Bemail=sec.boston@ieee.org|a15Bname2=To be assigned later|a15Bemail2=|a15Cname=Gilmore Cooke|a15Ctitle=retired PE|a15Corg=Boston Section Executive Committee|a15Caddress=8 Canvasback, W. Yarmouth, MA 02673|a15Cphone=617-759-4271|a15Cemail=gilcooke@ieee.org}}<br />[[Media:Pierce Loran.pdf|Pierce Loran.pdf]] | ||
Revision as of 23:26, 9 December 2010
This Proposal has not been submitted and may only be edited by the original author.
Pierce Loran.pdf
