Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kornelson, K. Gablehouse, D. |
| Copyright Year | 1989 |
| Description | Author affiliation: Lab. for Atmos. & Space Phys., Colorado Univ., Boulder, CO, USA (Kornelson, K.; Gablehouse, D.) |
| Abstract | The precession of the orbit plane of the Solar Mesosphere Explorer Satellite since its launch in October 1981 has result in periods of zero orbital eclipse each year since 1986. This has produced temperatures of 40-60 degrees C onboard the satellite, contributing to the failure of one battery and an extreme decrease in the capability of the other. In 1988, alterations to the mission operations plane became necessary to minimize operational dependence on power storage and to preserve battery capacity. The remaining battery was unable to prevent undervoltage conditions during orbital eclipse, requiring the development of recovery techniques to be executed from satellite memory each orbit. These techniques were modified and improved until spacecraft undervoltage became transparent to controllers. Continued decrease in capacity and battery temperatures as high as 47 degrees C in mid-November of 1988 made battery conditioning cycles impossible during this period of full sun. The battery remained offline, charged when necessary, as the power system analysts worked to preserve its capacity and looked ahead toward spring of 1989, when the remaining battery would again supply the full spacecraft power load. All efforts to restore the spacecraft failed. On 15 May 1989 the mission was terminated.< |
| Starting Page | 2663 |
| Ending Page | 2665 |
| File Size | 261644 |
| Page Count | 3 |
| File Format | |
| DOI | 10.1109/IECEC.1989.74851 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1989-08-06 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Batteries Temperature Satellites Power system analysis computing Space vehicles Voltage Sun Power system management Power system protection Regulators |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|