Overview of environmental test plans for Space Station Freedom work package 4

The generation and distribution of electric power for Space Station Freedom (SSF) is critical to the station's success. Work Package 4 (WP-04) has the responsibility for the design, development, test, and delivery of the Electric Power System (EPS) for the SSF. During launch, assembly, and operation, the EPS will be subjected to various environments. A test and verification approach has been developed to assure that the EPS will function in these environments. An overview of that test program is presented with emphasis on environmental testing of hardware. Two key areas of the test program are highlighted in the overview. One area is the verification of the Solar Power Module (SPM) and associated cargo element hardware. This area includes detailing the plans for development and qualification testing of the SPM hardware. One series of tests, including modal and acoustic, has been completed on a development cargo element. Another area highlighted is the acceptance testing of high-power Orbital Replacement Units (ORU). The environmental test equipment plans are presented and reviewed in light of an aggressive production rate, which delivers ORU's to the WP-04 and other Space Station Work Packages. Through implementing the test program as outlined, the EPS hardware will be certified for flight and operation on the Space Station Freedom

NorSat-3 – Next Generation Norwegian Maritime Surveillance

The NorSat-3 mission, with expected launch Q2/Q3 2020, aims to enhance the Norwegian recognized maritime picture with an experimental ship navigational radar detector (NRD) in addition to an AIS receiver. The NRD aims to geolocate ship navigation radars within 10 km circular error probable and verify AIS positions. The 10º NRD antenna field of view will nominally be pointed towards the horizon in order to maximize the area coverage and view of the ships’ navigation radar main lobe. Operating in a near polar low earth orbit the Norwegian area of interest may be covered between 10 and 15 times per day if pointing the antenna suitably. Achieving the desired geolocation accuracy and area coverage, while minimizing polarization loss, requires a highly capable attitude determination and control system. The signal processing capabilities of the Zynq Ultrascale+ system-on-chip enables the radar signal processing in orbit, although also requiring a large platform power generation capability. The mission, payloads and platform are described in this paper, including some of the lessons learned. All flight subsystems and payloads have completed their relevant unit environmental tests, including proton irradiation of NRD electronics. Final system verification and environmental testing begins August 2019, with a target flight readiness review November 2019

Image dissector camera system Final report, 2 Jun. 1965 - 16 Aug. 1967

Image dissector camera system for daytime cloud cover pictures from Nimbus B or other spacecraf

Methods for dependability analysis of small satellite missions

The use of small-satellites as platforms for fast-access to space with relatively low cost has increased in the last years. In particular, many universities in the world have now permanent hands-on education programs based on CubeSats. These small and cheap platforms are becoming more and more attractive also for other-than-educational missions, such as for example technology demonstration, science application, and Earth observation. This new objectives require the development of adequate technology to increase CubeSat performances. Furthermore, it is necessary to improve mission reliability. The research aims at studying methods for dependability analysis conducted by small satellites. The attention is focused on the reliability, as main attribute of the dependability, of CubeSats and CubeSats missions. The work has been structured in three main blocks. The first part of the work has been dedicated to the general study of dependability from the theoretical point of view. It has been studied the dependability attributes, the threads that can affect the dependability of a system, the techniques that are used to mitigate the threads, parameters to measure dependability, and models and techniques for dependability modelling. The second part contains a study of failures occurred during CubeSats missions in the last ten years and their observed reliability evaluation have been conducted. In order to perform this analysis a database has been created. This database contents information of all CubeSats launched until December 2013. The information has been gathered from public sources (i.e. CubeSat projects webs, publications on international journals, etc.) and contains general information (e.g. launch date, objectives) and data regarding possible failures. All this information is then used to conduct a quantitative reliability analysis of these missions by means of non-parametric and parametric methods, demonstrating that these failures follow a Weibull distribution. In the third section different methods, based on the concept of fault prevention, removal and tolerance, have been proposed in order to evaluate and increase dependability, and concretely reliability, of CubeSats and their missions. Concretely, three different methods have been developed: 1) after an analysis of the activities conducted by CubeSat’s developers during whole CubeSat life-cycle, it has been proposed a wide range of activities to be conducted during all phases of satellite’s life-cycle to increase mission rate of success, 2) increase reliability through CubeSats verification, mainly tailoring international ECSS standards to be applied to a CubeSat project, 3) reliability rising at mission level by means of implementing distributed mission architectures instead of classical monolithic architectures. All these methods developed in the present PhD research have been applied to a real space projects under development at Politecnico di Torino within e-st@r program. The e-st@r program is being conducted by the CubeSat Team of the Mechanical and AeroSpace Engineering Department. Concretely, e-st@r-I, e-st@r-II, and 3STAR CubeSats have been used as test cases for the proposed methods. Moreover, part of the present research has been conducted within an internship at the European Space research and Technology Centre (ESTEC) of the European Space Agency (ESA) at Noordwijk (The Netherlands). In particular, the partially realisation of the CubeSats database, the analysis of activities conducted by CubeSat developers and statement of activities for mission rate of success increase have been conducted during the internship

Integration And Testing Of Itupsat1

Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2010Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2010Yapay uydular, Sputnik ile başlayan uzay çağının en önemli elemanları olmuşlardır. Güzümüzde bu uydular, gerçekleştirdikleri kritik görevlerle insanlığa hizmek etmektedirler. İletişim, uzaktan algılama, veri toplama, navigasyon, keşif ve bilimsel deneyler kullanıldıkları alanlardan sadece bir kısmını oluşturmaktadır. Uzay teknolojisine yapılan yatırımlar hiç bir zaman boşa gitmemiş, mühendislikte ve bilimdeki ilerlemeleri tetikleyen bir unsur olmuştur. Ayrıca bu gelişmeler de uzay teknolojisinin ileriye gitmesinde ve gelişmesinde büyük rol oynamıştır. Günümüzün uzay araçları ile onların atalarını karşılaştırdığımızda, bugünün uydularının çok daha küçük, hafif ve kompakt yapılar olduklarını görürüz. Uzayla ilgili bir projenin risk ve maliyet gereksinimlerini dikkate alırsak, bu durum çok önem arz etmektedir. Yüzlerce, hatta binlerce kilogramlık uydular, aynı zamanda görev bütçeleri için de ağır bir yük teşkil etmektedirler. Bu nedenle, küçük uydular tasarımları, testleri, onaylaması ve fırlatma maliyetlerindeki avantajlardan dolayı dikkat çekmektedirler. 2001 yılında, California Polytechnic Üniversitesi ve Stanford Üniversitesi tarafından ‘Cubesat’ isimli bir küçük (piko) uydu projesi başlatıldı. Asıl amaç lise ve üniversite öğrencilerinin eğitilmesiyken, tasarım diğer alanlara doğru yayıldı. Üniversitelerin, şirketlerin ve devletlerin desteği ile proje verimli bir şekilde devam etmektedir ve bugüne kadar yaklaşık yüz Cubesat uzaya fırlatılmıştır. İstanbul Teknik Üniversitesi, Türkiyenin önde gelen üniversitelerinden biri olarak, 2005 yılında ITUpSAT1 isimli Cubesat projesine el atarak küçük uydu teknolojilerinde söz sahibi olmak istediğini gösterdi. Proje, 23 Eylül 2009’da uydunun Hindistan’dan uzaya fırlatılmasıyla son buldu. Bu tez, ITUpSAT1 uydusunun tasarlanması sürecinde gerçekleştirilmiş olup, test standartlarının piko ve nano seviyelerdeki küçük uydulara uyarlanmasını konu edinmektedir.Artificial satellites orbiting around the Earth are essential since the start of the space age, which begun with Sputnik. Today, they perform critical missions and serve humanity to make life easier. Communication, remote sensing, data collection, navigation, exploration, scientific experiments are the most important fields where they utilized. Investments in space technology result in advancements in engineering and science, and these advancements also lead to developments in the space technology. If one compares the first spacecrafts and today’s, a huge diffence can be observed clearly. As in the other technologies, today’s satellites are smaller, lighter and more compact than their first ancestors. This is a very important factor when considering risk and cost requirements of a space project. The satellites that weight hundred of kilograms or several tons is also a heavy weight for the mission budgets. Therefore, small satellites attract attention, since they are easier to handle, to test, to verify and to launch to space. The space technology of the future will be driven by this point of view. In 2001, a small satellite (picosatellite) project, called CubeSat, has been started by the association of California Polytechnic State University and Stanford University. The main objective was the education of college and university students, however the concept spread out to other areas. Today, the project continues effeciently with the contribution of universities, companies and governments; and around a hundred CubeSats have been launched to space. Istanbul Technical University, as the leading educational establishment of Turkey, decided to have hand on the development of small satellites technologies by introducing a Cubesat project called ITUpSAT1 by the year 2005. The project resulted in 23 Sept, 2009 by the launch of the satellite from India to space. This thesis is the product of the ITUpSAT1 project and presents the test standards tailored for the small satellites, specifically for pico and nano scales.Yüksek LisansM.Sc

Small business innovation research. Abstracts of 1988 phase 1 awards

Non-proprietary proposal abstracts of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA are presented. Projects in the fields of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and structures, teleoperators and robots, computer sciences, information systems, data processing, spacecraft propulsion, bioastronautics, satellite communication, and space processing are covered

Research and technology highlights of the Lewis Research Center

Highlights of research accomplishments of the Lewis Research Center for fiscal year 1984 are presented. The report is divided into four major sections covering aeronautics, space communications, space technology, and materials and structures. Six articles on energy are included in the space technology section

Research and Technology, 1994

This report selectively summarizes the NASA Lewis Research Center's research and technology accomplishments for the fiscal year 1994. It comprises approximately 200 short articles submitted by the staff members of the technical directorates. The report is organized into six major sections: Aeronautics, Aerospace Technology, Space Flight Systems, Engineering and Computational Support, Lewis Research Academy, and Technology Transfer. A table of contents and author index have been developed to assist the reader in finding articles of special interest. This report is not intended to be a comprehensive summary of all research and technology work done over the past fiscal year. Most of the work is reported in Lewis-published technical reports, journal articles, and presentations prepared by Lewis staff members and contractors. In addition, university grants have enabled faculty members and graduate students to engage in sponsored research that is reported at technical meetings or in journal articles. For each article in this report a Lewis contact person has been identified, and where possible, reference documents are listed so that additional information can be easily obtained. The diversity of topics attests to the breadth of research and technology being pursued and to the skill mix of the staff that makes it possible

Bibliography of Lewis Research Center Technical Publications announced in 1991

This compilation of abstracts describes and indexes the technical reporting that resulted from the scientific engineering work performed and managed by the Lewis Research Center in 1991. All the publications were announced in the 1991 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Included are research reports, journal articles, conference presentations, patents and patent applications, and theses