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2001

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The Little Probe That Could! (A Story Of Mission Impossible Engineering) , T. Adams, D. Downs, G. Murphy, K. Neal Aug 2001

The Little Probe That Could! (A Story Of Mission Impossible Engineering) , T. Adams, D. Downs, G. Murphy, K. Neal

Small Satellite Conference

Starting with the Space Shuttle flight 4A (Nov. 30, 2000), the International Space Station (ISS) power system employs large, high voltage, solar arrays with the negative ground tied to chassis. An intense study by a NASA sponsored Tiger Team in the early ‘90s determined that this configuration leads to the structure being at a high negative potential relative to the local plasma (approximately 140v negative without any intervention) and, that at any potential greater than around 70v negative, the anodized aluminum structure and its components will undergo destructive arcing. A set of plasma contactor units (PCUs) was deployed to provide …

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Starshine Missions In 2001, Gil Moore, William Braun, Phillip Jenkins, Walter Holemans, Donald Lefevre, Michael Batchelder Aug 2001

Starshine Missions In 2001, Gil Moore, William Braun, Phillip Jenkins, Walter Holemans, Donald Lefevre, Michael Batchelder

Small Satellite Conference

Two upgraded Starshine satellites will fly in the fall of 2001. Starshine 2 will fly on NASA’s Space Shuttle Endeavor on November 29 and will carry 846 student-polished mirrors, 31 laser retroreflectors, and a cold-gas spin system. Starshine 3 will fly as the primary payload on NASA’s Kodiak Star mission on August 31 out of Kodiak, AK. It will carry 1500 student-polished mirrors, 31 laser retroreflectors, an array of state-of-the-art solar cells and experimental integrated power supplies, and a VHF communication system. It will be deployed from the Athena I launch vehicle by a Lightband separation system.

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Efficient Satellite Structural Design Optimised For Volume Production, Angelos Tsinas, Christopher Welch Aug 2001

Efficient Satellite Structural Design Optimised For Volume Production, Angelos Tsinas, Christopher Welch

Small Satellite Conference

In the past, the limited number and production volume of satellites has meant that their structural design has been essentially a one-off procedure. As a result, the most common choice of primary structural medium has been metal. Although eminently reliable and highly proven, this option has led to a comparatively high structural mass fraction of 20-24%. The emergence of communications satellite constellations creates the need for a complete reappraisal of current design practices. Emphasis needs to be given in the implementation of volume production methods, already matured through experience in the aviation industry, to manufacture of satellites. The prospect of …

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First Experimental Demonstration Of Full-Duplex Optical Communications On A Single Laser Beam, T. M. Shay, D.A. Hazzard, J.A. Maccannell, G. Lee, C.D. Garrett, J.A. Payne, N. Dahlstrom, S. Horan Aug 2001

First Experimental Demonstration Of Full-Duplex Optical Communications On A Single Laser Beam, T. M. Shay, D.A. Hazzard, J.A. Maccannell, G. Lee, C.D. Garrett, J.A. Payne, N. Dahlstrom, S. Horan

Small Satellite Conference

We present the results of the first experimental demonstration a novel communications architecture that will be deployed on a Space Shuttle mission in 2003. This architecture can provide a very lightweight, low power consumption, low data rate communications link between the earth and LEO satellites. A unique characteristic of this system is that it provides full-duplex communications on a single beam is presented. The results of first experiments demonstrating this full duplex communications architecture are presented.

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The Small Payload Access To Space Experiment (Spase): Using Non-Traditional Aerospace Technology To Enable A New Generation Of Low-Cost Missions, Scott Mcdermott, L. Eric Aamot Aug 2001

The Small Payload Access To Space Experiment (Spase): Using Non-Traditional Aerospace Technology To Enable A New Generation Of Low-Cost Missions, Scott Mcdermott, L. Eric Aamot

Small Satellite Conference

Launching on STS-108 Endeavour in late 2001, the Small Payload Access to Space Experiment (SPASE) demonstrates a number of new technologies, efficient ways to conduct a nanospacecraft development program, and how to take such a spacecraft through the Shuttle Hitchhiker safety and integration process. This paper describes the essential “lessons learned” in each of these areas. Commercial solar panels, batteries, imagers, photocells, integrated circuits, and manufacturing techniques are used throughout the vehicle, bringing the low cost and high manufacturing reliability of these products into the space realm. Core personnel carried the program from conception through proposal, requirements definition, design, development, …

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A Feasibility Study Of Micro-Satellites For Earth Observation, Joshua Levi, Peter Washabaugh Aug 2001

A Feasibility Study Of Micro-Satellites For Earth Observation, Joshua Levi, Peter Washabaugh

Small Satellite Conference

There is a continuing desire to minimize the fabrication, launch, and operational costs of Earth-observing satellites, while still maintaining their high-resolution capabilities. Micro-satellites have been suggested as a method for obtaining these results using several different configurations; such as conventional filled aperture optics, distributed aperture systems, constellations and tethers. The ability of the different spacecraft types to achieve images of a specified resolution and quality are examined, as are their affects on the mass and size of the spacecraft. However, first a minimum spacecraft size is discussed and formulated for missions of this and similar types. This is used as …

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Crafti: A Canadian Asteroid Mission, Henry Spencer, Alex Beattie, Robert Zee Aug 2001

Crafti: A Canadian Asteroid Mission, Henry Spencer, Alex Beattie, Robert Zee

Small Satellite Conference

Historically, planetary exploration has been performed using large, complex, and costly spacecraft that have attempted to bring a laboratory of instruments with them. Only in the early days of the American and Russian space programs were the missions less complex and more focused. The Canadian Robotic Asteroid Flyby and Tentatively Impact (CRAFTI) mission proposes to return to some of the philosophies of that era, and to bring modern microsatellite design philosophies into planetary exploration. The CRAFTI mission is a concept study being undertaken by the University of Toronto Institute of Aerospace Studies Space Flight Laboratory (UTIAS-SFL) and the Canadian Space …

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Development Of Kaistsat-4 Expanding The Role Of Small Satellite For Scientific Research , Woo-Kyung Lee, Kyung-In Kang, Hyun-Woo Lee, Kyung-Bin Park, S. Min Park, M.R. Nam, Dong-Jo Park Aug 2001

Development Of Kaistsat-4 Expanding The Role Of Small Satellite For Scientific Research , Woo-Kyung Lee, Kyung-In Kang, Hyun-Woo Lee, Kyung-Bin Park, S. Min Park, M.R. Nam, Dong-Jo Park

Small Satellite Conference

The fourth Korean small satellite, KAISTSAT-4, is under development by Satellite Technology Research Center (SaTReC) of the Korea Advanced Institute of Science and Technology (KAIST). The KAISTSAT-4 program was commenced on October 1998 with multiple mission objectives, which include exploring space science, deploying satellite-based data collection system and development of precision star sensor. Despite severe constraints on mass and size, these advanced science and engineering payloads are expected to deliver various useful results and exhibit the unique role of small satellite. We present an overview of the KAISTSAT-4 mission and describe its current status. Finally the prospect of future small …

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Mars Scouts: An Overview, Steve Matousek Aug 2001

Mars Scouts: An Overview, Steve Matousek

Small Satellite Conference

The Mars Program institutes the Mars Scout Missions in order to address science goals in the program not otherwise covered in the baseline Mars plan. Mars Scout missions will be Principal-Investigator (PI) led science missions. Analogous to the Discovery Program, PI led investigations optimize the use of limited resources to accomplish the best focused science and allow the flexibility to quickly respond to discoveries at Mars. Scout missions also require unique investments in technology and reliance upon Mars-based infrastructure such as telecomm relay orbiters.

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Spacecraft System Design For An Advanced X-Ray Monitor (Axm) Mission, Michael Socha, Richard Metzinger, Stephen Bellio, Edward Bergmann, David Carter, Ronald Remillard, Alan Levine, Hale Bradt, Edward Morgan, Edward Boughan, William Mayer Aug 2001

Spacecraft System Design For An Advanced X-Ray Monitor (Axm) Mission, Michael Socha, Richard Metzinger, Stephen Bellio, Edward Bergmann, David Carter, Ronald Remillard, Alan Levine, Hale Bradt, Edward Morgan, Edward Boughan, William Mayer

Small Satellite Conference

This paper describes a system concept for a NASA Small Explorer Mission to develop an all-skyviewing Advanced X-ray Monitor (AXM). The spacecraft is configured to be launched from a Pegasus XL vehicle. AXM is designed to provide unprecedented sensitivity to cosmic explosions seen in X-rays. These include the ejections of relativistic jets by black holes in the Galaxy, and the fireballs of gamma ray bursts that originate in distant Galaxies. Such events are captured with 31 cameras mounted on the AXM spacecraft to continuously view 97% of the celestial sphere, excluding occultations by the Earth. The camera detectors are Gas …

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Single Injection Earth Return Trajectory Options For Small Spacecraft Missions To The Moon, Cesar Ocampo, Shawn Hayes, Robert Twiggs Aug 2001

Single Injection Earth Return Trajectory Options For Small Spacecraft Missions To The Moon, Cesar Ocampo, Shawn Hayes, Robert Twiggs

Small Satellite Conference

There exist several classes of high energy trajectories that are injected from Earth centered orbits to deep space destinations and return to the vicinity of the Earth sometime later due to the direct influence of a third body perturbation. These trajectories can be designed to flyby the moon or near Earth asteroids and comets. The appealing characteristic of these trajectories is that they require a single injection maneuver at the Earth and no further translational control thereafter. A spacecraft on such a trajectory can take observations and measurements of the flyby body and download the data once it returns to …

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The Montana State University Nasa Space Grant Explorer-1 Science Reflight Commemorative Mission , M. Obland, G. Hunyadi, S. Jepsen, B. Larsen, D.M. Klumpar, C. Kankelborg, W.A. Hiscock Aug 2001

The Montana State University Nasa Space Grant Explorer-1 Science Reflight Commemorative Mission , M. Obland, G. Hunyadi, S. Jepsen, B. Larsen, D.M. Klumpar, C. Kankelborg, W.A. Hiscock

Small Satellite Conference

Montana State University's Space Science and Engineering Laboratory (SSEL) under support from the Montana NASA Space Grant Consortium is engaged in an earth orbiting satellite student project that will carry a reproduction, using current-day technology, of the scientific payload flown on the United States' first satellite, Explorer-1, February 1, 1958. The Montana EaRth Orbiting Pico Explorer (MEROPE) will carry a single Geiger counter into a 600 km, sun-synchronous polar orbit to measure the corpuscular radiation that characterizes the Van Allen Radiation Belts, first measured by Professor James Van Allen's group with Explorer-1. In contrast to Explorer-1's 14 kg mass, MEROPE, …

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Satellite Imaging Service Analysis Using Queueing Theory, Yan Mai, P.L. Palmer Aug 2001

Satellite Imaging Service Analysis Using Queueing Theory, Yan Mai, P.L. Palmer

Small Satellite Conference

Earth observation using small satellites is leaving demonstration status and being proposed for more and more commercial applications. By analysing such a service from both end-user and satellite operator point-of-view, it is hoped to provide the information such as service performance, on-board resource status and key parameters for system optimisation before the spacecraft is designed, launched and put into service. In this paper, queueing theory, traditionally used to perform tra_c and e_ciency analysis in tele-communication and other queueing system, is applied in this new area - a commercial imaging service using small satellites. The introduction of queueing theory in our …

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The Small Payload Orbit Transfer (Sport™) Vehicle And The Business Environment For The Next Generation Of Piggyback Launch Options , Ahmad Sabirin Arshad, Aaron Jacobovits, Yasser Ahmad, David Goldstein Aug 2001

The Small Payload Orbit Transfer (Sport™) Vehicle And The Business Environment For The Next Generation Of Piggyback Launch Options , Ahmad Sabirin Arshad, Aaron Jacobovits, Yasser Ahmad, David Goldstein

Small Satellite Conference

AeroAstro and Astronautic Technology Sdn. Bhd. (ATSB) are developing the Small Payload ORbit Transfer (SPORT) Vehicle. Primarily designed to take advantage of the many auxiliary launch opportunities to Geosynchronous Transfer Orbit (GTO), SPORT acts as a small upper stage by moving a small payload from GTO to Low Earth Orbit (LEO), which is typically a much more desirable orbit. An innovative combination of aerobraking and chemical propulsion allows SPORT to accomplish this mission while keeping costs low. This paper provides an overview of the growing market for auxiliary launches, which also includes a discussion of launch brokering, SPORT, competing decommissioned …

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Tropnet: The First Large Small-Satellite Mission, J. Smith Aug 2001

Tropnet: The First Large Small-Satellite Mission, J. Smith

Small Satellite Conference

Every small-satellite enthusiast has hoped for the day when small satellites would gain the sophistication, political support and commercial viability to be used for main stream missions. The first phase of such a mission is currently being constructed by One Stop Satellite Solutions (OSSS) of Ogden, Utah and will launch May of 2002. The OS-2 payload will be delivered into a 650-km orbit using a Russian Dnepr launch vehicle furnished by the launch team of Kosmotraus and Thiokol. Aboard the OS-2 mission will be two satellites, which will demonstrate technical feasibility of the TropNet concept. TropNet is an equatorial LEO …

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Demonstration Of The Cobra Teardrop Concept Using Two Smallsats In 8-Hour Elliptic Orbits , John Draim, Richard Inciardi, Paul Cefola, Ron Proulx, David Carter Aug 2001

Demonstration Of The Cobra Teardrop Concept Using Two Smallsats In 8-Hour Elliptic Orbits , John Draim, Richard Inciardi, Paul Cefola, Ron Proulx, David Carter

Small Satellite Conference

Space Resource America Corporation is engaged in developing new concepts for communications satellite systems that will avoid interference with any of the Geostationary satellites and can provide a significant increase in global capacity compared with that of the GEO ring. Additionally, since all satellites in such a system are flying in formation, they will not interfere with each other. The company has filed for a series of patents on the orbital arrays, or constellations, that appear to hold the most promise in satisfying both commercial and government requirements. Each of the three active arcs of a single 8-hour satellite has …

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Encounter 2001: Sailing To The Stars, James Rogan, Paul Gloyer, Joel Pedlikin, Gordon Veal, Billy Derbes Aug 2001

Encounter 2001: Sailing To The Stars, James Rogan, Paul Gloyer, Joel Pedlikin, Gordon Veal, Billy Derbes

Small Satellite Conference

Encounter 2001, LLC, AeroAstro, Inc., and L'Garde, Inc. are funded and developing a revolutionary spacecraft for a 2003 launch. The mission of this launch is the delivery of a three-kilogram payload out of the solar system using a solar sail. While the benefits of using solar sails for long-duration missions have been discussed extensively, to date no solar sail missions have been executed. Using a base material oneseventy- sixth the thickness of a human hair, the Encounter solar sail will be 75 m by 75 m with a mass of 18 kg (including payload), resulting in an areal density (mass …

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08/14/2001 - "Doc" Bock Named Eiu Professor Laureate For 2001-2002, University Marketing And Communications Aug 2001

08/14/2001 - "Doc" Bock Named Eiu Professor Laureate For 2001-2002, University Marketing And Communications

2001

No abstract provided.

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Ua3/9/5 Faculty Staff Convocation, Wku President's Office Aug 2001

Ua3/9/5 Faculty Staff Convocation, Wku President's Office

WKU Administration Documents

Speech delivered by WKU president Gary Ransdell at fall convocation. He discusses enrollment, budget, tuition, salaries, insurance, administrative reorganization, legislative priorities, construction of Mass Media & Technology Hall and Guthrie Tower, engineering, economic development, information technology and capital campaign.

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Amar V. Yoseph, Aharon Barak, Theodor Or, Shlomo Levin Aug 2001

Amar V. Yoseph, Aharon Barak, Theodor Or, Shlomo Levin

Translated Opinions

Facts: The appellants are a couple who had a baby girl born whom they did not take home from the hospital. She was born with birth defects. The respondents were involved in the publication of two articles on the matter of the girl. In one article details of her birth were given and it was written that she was abandoned by her parents. It was written in the subtitle of the article that the mother of the baby is a drug addict. In the other article the birth defects of the daughter and the abandonment were published. The appellants sued …

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Memo, Peter Merritt To Florida Ornithological Society Board Of Directors And Committee Chairs, Recent Florida Ornithological Society Activities, August 14, 2001, Peter G. Merritt Aug 2001

Memo, Peter Merritt To Florida Ornithological Society Board Of Directors And Committee Chairs, Recent Florida Ornithological Society Activities, August 14, 2001, Peter G. Merritt

Florida Ornithological Society - Records - Full Collection

A memo from Peter Merritt, President of the Florida Ornithological Society (FOS), to the FOS Board of Directors and committee chairs about recent activities the society had undertaken.

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Myriade: Cnes Micro-Satellite Program, Michel Thoby Aug 2001

Myriade: Cnes Micro-Satellite Program, Michel Thoby

Small Satellite Conference

CNES is currently leading the development of a program of micro-satellites, which has been now blessed with a name in line with the ambition: MYRIADE. The intention is to primarily fulfill the needs of the national scientific research in small space missions. Technology experiments as well as demonstration flights for new mission concepts shall however not be forgotten. The main objective is to make access to space much easier and affordable. The first five scientific and technological mixed missions (which include international cooperation) are under realization and fully funded. The program foundation is strengthened by a specification for a product …

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An Eo Constellation Based On The Topsat Microsatellite: Global Daily Revisit At 2.5 Metres , Alex Wicks, Susan Jason, Jenny Harrison Aug 2001

An Eo Constellation Based On The Topsat Microsatellite: Global Daily Revisit At 2.5 Metres , Alex Wicks, Susan Jason, Jenny Harrison

Small Satellite Conference

TopSat is an unclassified collaborative mission between DERA, SSTL, RAL and InfoTerra, funded by the UK MoD and the British National Space Centre Mosaic Programme. The mission will demonstrate provision of rapid response 2.5 m ground sampled imagery to fixed and mobile ground targets using a low cost SSTL microsatellite. The platform provides accurate target selection via agile off-pointing from nadir by ± 30°. On-board computers, GPS and sophisticated attitude and data handling systems enable safe semi-autonomous operations. End users for this mission range from the UN and environment agencies to mining companies, farm consultants and town planners. Continuing the …

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Pleiades High Resolution Satellite : A Solution For Military And Civilian Needs In Metric-Class Optical Observation , Patrice Damilano Aug 2001

Pleiades High Resolution Satellite : A Solution For Military And Civilian Needs In Metric-Class Optical Observation , Patrice Damilano

Small Satellite Conference

In 2000, Cnes (French space agency) decided to initiate the Pleiades program consisting in a constellation of European satellite components dedicated to Earth observation. Astrium is in charge of the first French component, named Pleiades High Resolution, as satellite prime contractor. This satellite aims at fulfilling the needs of French and Italian governments, for both civilian and military users, in metric-class optical observation at the 2006 horizon. This small satellite weighting around 900 kg will orbit at 695 km on a Sun synchronous orbit. It will provide colored images of more than 20 km swath, with a panchromatic resolution better …

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A Novel Concept For Monitoring Of Maritime Traffic By Micro-Satellites, B.T. Narheim, T. Eriksen, G.K. Høye, T. Wahl Aug 2001

A Novel Concept For Monitoring Of Maritime Traffic By Micro-Satellites, B.T. Narheim, T. Eriksen, G.K. Høye, T. Wahl

Small Satellite Conference

A concept for monitoring of maritime traffic by micro-satellites has been studied at FFI [1]. The concept is based on localization of maritime vessels by passive detection of their X-band navigation radar (3 cm wavelength), and subsequent direction finding and determination of the geographic position. A Phase-A study [3] on the utilization of this concept, for monitoring of the maritime traffic in ocean areas under Norwegian jurisdiction has demonstrated the feasibility of the concept. Localization of vessels can be performed to an accuracy of 1 km or better from a micro-satellite orbiting at 600 km altitude. The concept requires the …

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Techsat 21 And Revolutionizing Space Missions Using Microsatellites, Maurice Martin, Pete Klupar, Steve Kilberg, James Winter Aug 2001

Techsat 21 And Revolutionizing Space Missions Using Microsatellites, Maurice Martin, Pete Klupar, Steve Kilberg, James Winter

Small Satellite Conference

The Air Force Research Laboratory (AFRL) TechSat 21 flight experiment demonstrates a formation of three microsatellites flying in formation to operate as a “virtual satellite.” X-band transmit and receive payloads on each of the satellites form a large sparse aperture system. The satellite formation can be configured to optimize such varied missions as radio frequency (RF) sparse aperture imaging, precision geolocation, ground moving target indication (GMTI), single-pass digital terrain elevation data (DTED), electronic protection, single-pass interferometric synthetic aperture radar (IF-SAR), and high data-rate, secure communications. Benefits of such a microsatellite formation over single large satellites include unlimited aperture size and …

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Topsat – High Resolution Imaging From A Small Satellite , Paul Brooks Aug 2001

Topsat – High Resolution Imaging From A Small Satellite , Paul Brooks

Small Satellite Conference

The Topsat mission is designed to demonstrate the capabilities of small satellites for classically high value remote sensing missions. Conceived by the UK’s Defence Evaluation and Research Agency (DERA), it will produce 2.5 m resolution panchromatic imagery and 5 m resolution multispectral imagery in three visible wavebands and allow direct transmission of the image data to a local mobile ground station. The Topsat programme is jointly funded by the UK Ministry of Defence (MoD) and by the British National Space Centre’s Mosaic small satellite initiative and includes provision for the spacecraft, ground segment, commercial launch and one year of planned …

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433 Eros Landing – Development Of Near Shoemaker’S Controlled Descent Sequence , Robert Nelson, Karl Whittenburg, Mark Holdridge Aug 2001

433 Eros Landing – Development Of Near Shoemaker’S Controlled Descent Sequence , Robert Nelson, Karl Whittenburg, Mark Holdridge

Small Satellite Conference

On February 12th, 2001, the NEAR Shoemaker spacecraft made its historic descent to the surface of the asteroid 433 Eros, becoming the first spacecraft to soft land on a small celestial body. Development of the final descent activity offered the NEAR team a difficult technical challenge as the spacecraft had been designed solely as a free flyer, not as a lander. The NEAR Shoemaker spacecraft rendezvoused with 433 Eros on February 14th, 2000. Following an intensive year of orbital operations collecting science data at decreasingly lower altitudes, the spacecraft was prepared to conduct its final activity, descending from its current …

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The Murray Ledger And Times, August 13, 2001, The Murray Ledger And Times Aug 2001

The Murray Ledger And Times, August 13, 2001, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

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Board Of Directors Meeting Minutes (August 13, 2001), Dmacc Aug 2001

Board Of Directors Meeting Minutes (August 13, 2001), Dmacc

Board of Directors Meeting Minutes

This file contains the minutes from the Des Moines Area Community College Board meeting held on August 13, 2001.

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