Analysis and optimization of the satellite-to-plane link of an aeronautical global system

En aquest projecte s'ha analitzat i optimitzat l'enllaç satèl·lit amb avió per a un sistema aeronàutic global. Aquest nou sistema anomenat ANTARES està dissenyat per a comunicar avions amb estacions base mitjançant un satèl·lit. Aquesta és una iniciativa on hi participen institucions oficials en l'aviació com ara l'ECAC i que és desenvolupat en una col·laboració europea d'universitats i empreses. El treball dut a terme en el projecte compren bàsicament tres aspectes. El disseny i anàlisi de la gestió de recursos. La idoneïtat d'utilitzar correcció d'errors en la capa d'enllaç i en cas que sigui necessària dissenyar una opció de codificació preliminar. Finalment, estudiar i analitzar l'efecte de la interferència co-canal en sistemes multifeix. Tots aquests temes són considerats només per al "forward link". L'estructura que segueix el projecte és primer presentar les característiques globals del sistema, després centrar-se i analitzar els temes mencionats per a poder donar resultats i extreure conclusions.En este proyecto se ha analizado y optimizado el enlace satélite a avión para un sistema aeronáutico global. Este nuevo sistema, ANTARES, está diseñado para comunicar aviones y estaciones base mediante un satélite. Esta es una iniciativa europea en la que participan varias instituciones oficiales en aviación como el ECAC y es desarrollada en una colaboración europea de universidades y empresas. El trabajo llevado a cabo en este proyecto comprende básicamente tres aspectos. El diseño y análisis de la gestión de recursos. La idoneidad de usar corrección de errores en la capa de enlace y en caso que sea necesario diseñar una opción de codificación preliminar. Finalmente, estudiar y analizar el efecto de la interferencia co-canal en sistemas multihaz. Todos estos temas se consideran sólo en el "forward link". La estructura que sigue el trabajo es, primero presentar las características globales del sistema, luego centrarse y analizar los temas mencionados para finalmente dar resultados y extraer conclusiones.In this project it is analyzed and optimized the satellite-to-plane link of an aeronautical global system. This new upcoming system called ANTARES is intended for communicating airplanes and ground stations through a satellite system. This is a European initiative involving official institutions in terms of aviation such as the ECAC and developed in a European collaboration of universities and companies. The work carried out in the project comprehends basically three issues. The Radio Resource Management analysis and design. Analyze the suitability of using Link Layer-Forward Error Correction in the system and in case it is necessary design a preliminary coding option. Finally, study and analyze the effect of the co-channel interference in multibeam systems. All these issues are considered only for the forward link of the system. The structure of the project is as follows, first present the global characteristics of the system, then focus and analyze the mentioned subjects and finally give results and take conclusions on the work

A commercially driven design approach to UK future small payload launch systems

Miniaturisation of satellite componentry, increasingly capable small sensors and substantial increases in processing capacity and transmission bandwidth are driving rapid growth in small payload development and consequential launch demand. The advent of horizontal take-off spaceports opens the door for a new generation of small payload launch systems that will fulfil this demand. However, the key to a launch system's success is its ability to provide a return on the substantial costs of development while delivering pricing levels commensurate with the needs of launch customers. Therefore, commercially led design approaches are needed to refine and optimise the design of the new small payload launch systems required. This approach was embodied in an ongoing UKSA funded NSTP2 project titled Future UK Small Payload Launcher (FSPLUK). The approach is first founded upon a bespoke and specific market assessment. This characterises, segments and quantifies the commercial opportunity and establishes principal desired system performance requirements. An assessment of available technologies at differing TRLs permits initial vehicle configuration options to be developed and technically assessed. Technically viable options are then assessed in terms of commercial viability with the best advanced into more detailed technical assessment and system optimisation. The resultant vehicles are again tested for commercial viability and, if successful, emerge as recommended development avenues. Using these methods, it has been possible to iterate design concepts from apparently simple yet economically sub-optimised stacked launcher systems through several design iterations to a resultant highly flexible and economically efficient conceptual design. The key finding relates to the inter-relationship between payload flexibility, in permitting maximised flight rates from a reasonably complex but highly reusable first stage design, and low disposable upper stage unit cost. This has driven the resultant system to feature an air launched integrated re-usable first stage vehicle, configured with a flexible internal payload bay from which one or more upper stages are deployed. This configuration maximises commercial utility and reusability. The resultant high flight rate allows development costs to be efficiently amortised with minimised direct launch costs. The configuration therefore meets low cost per kg price targets while delivering a positive return on development expenditure over life. It also provides a flight proven vehicle platform with available internal real-estate for application as a hypersonic air test platform for new propulsion systems, such as SABRE. The commercially led approach has created the foundation for viable and economically justifiable development

How to launch small payloads? Evaluation of current and future small payload launch systems

This paper describes a preferable vehicle classification alongside a brief description of key technologies available on the shelf or under development to address the demand of the small payload market. This is followed by a discussion on the investigation of the current market and the future forecast; regarding the delivery of small payloads into orbit

Emerging Issues for the FAA Office of Commercial Space Transportation

The Federal Aviation Administration’s (FAA) Office of Commercial Space Transportation (AST), part of the U.S. Department of Transportation, has licensed over 230 launches since 1989. The FAA licenses, regulates, and promotes U.S. commercial space transportation including expendable launch vehicles, new reusable launch vehicles that can carry people such as Virgin Galactic’s SpaceShipTwo and XCOR’s Lynx, and the operation of non-federal launch sites or what are more commonly known as commercial spaceports. There are 9 licensed spaceports in the U.S. Although the FAA licenses launch and reentry for public safety, it does not have authority for in-orbit space transportation. In addition, unlike for passenger aircraft, FAA/AST does not have authority to protect people onboard commercial space vehicles nor does it certify vehicles. In 2014, the FAA issued “Recommended Practices for Human Space Flight Occupant Safety,” a document which could serve as a foundation for future regulations, if needed. There are about 30 “pre-application consultations” that are on-going with AST including proposals for new vehicles, new spaceports, safety approvals and requests for payload reviews. AST staff has grown to 81 people with a budget request to add more in FY 2016. With NASA increasingly shifting to commercial launch services for supply of the International Space Station (and return) and soon for astronaut crew transfer, the visibility of the commercial space transportation industry has increased. Both NASA and FAA have worked closely together to define their respective oversight responsibilities in the successful Commercial Orbital Transportation Services (COTS) program and are currently working together in the Commercial Crew Program. Separately, the FAA is promoting its regulations for international adoption as suborbital companies market their services outside the United States. All of these indicators are a sign of U.S. industry growth and generate new issues for the FAA. This presentation will cover an introduction to FAA Office of Commercial Space Transportation and policy issues faced by the office and commercial industry including gaps in regulatory authority. The presentation will also include the competitive position of the U.S. in the global commercial launch services market and FAA’s international goals.https://commons.und.edu/ss-colloquium/1053/thumbnail.jp

A simulation-based algorithm for solving the resource-assignment problem in satellite telecommunication networks

This paper proposes an heuristic for the scheduling of capacity requests and the periodic assignment of radio resources in geostationary (GEO) satellite networks with star topology, using the Demand Assigned Multiple Access (DAMA) protocol in the link layer, and Multi-Frequency Time Division Multiple Access (MF-TDMA) and Adaptive Coding and Modulation (ACM) in the physical layer.En este trabajo se propone una heurística para la programación de las solicitudes de capacidad y la asignación periódica de los recursos de radio en las redes de satélites geoestacionarios (GEO) con topología en estrella, con la demanda de acceso múltiple de asignación (DAMA) de protocolo en la capa de enlace, y el Multi-Frequency Time Division (Acceso múltiple por MF-TDMA) y codificación y modulación Adaptable (ACM) en la capa física.En aquest treball es proposa una heurística per a la programació de les sol·licituds de capacitat i l'assignació periòdica dels recursos de ràdio en les xarxes de satèl·lits geoestacionaris (GEO) amb topologia en estrella, amb la demanda d'accés múltiple d'assignació (DAMA) de protocol en la capa d'enllaç, i el Multi-Frequency Time Division (Accés múltiple per MF-TDMA) i codificació i modulació Adaptable (ACM) a la capa física

2015 Commercial Space Industry Snapshot as Seen Through the Eyes of the International Symposium for Personal and Commercial Spaceflight (ISPCS)

The International Symposium for Personal and Commercial Spaceflight (ISPCS) is a nonprofit independently run annual event, that has taken place these past 11 years, whose speakers capture the growth and diversification of the global commercial space industry in the form of short powerful talks. Hence, it was appropriate that a 2015 snapshot of the commercial space industry should look at this body of experience and knowledge. The key developments, the key players and an accurate state of the industry are hereby presented through the eyes of the ISPCS from this past eleventh symposium that spanned two days and was held in New Mexico. The latest developments include the Lynx, the crewed Dragon, LauncherOne, and the Dream Chaser®

Early Afternoon Concurrent Panel Sessions: Commercial Space Industry Snapshot: Presentation: 2015 Commercial Space Industry Snapshot as seen through the eyes of the International Symposium for Personal and Commercial Spaceflight (ISPCS)

The International Symposium for Personal and Commercial Spaceflight (ISPCS) is a nonprofit independently run annual event, that has taken place these past 11 years, whose speakers capture the growth and diversification of the global commercial space industry in the form of short powerful talks. Hence, it was appropriate that a 2015 snapshot of the commercial space industry should look at this body of experience and knowledge. The key developments, the key players and an accurate state of the industry are hereby presented through the eyes of the ISPCS from this past eleventh symposium that spanned two days and was held in New Mexico. The latest developments include the Lynx, the crewed Dragon, LauncherOne, and the Dream Chaser®

Incorporating Industry Needs into the Development of an Undergraduate Degree in Commercial Space Operations

The rapid expansion of the commercial space industry, not unlike the aviation industry in the early 20th century, has left the industry facing unique challenges. As companies continue to expand, the need for a well-trained workforce becomes critical. The needed workforce must be specifically educated to enter the commercial space industry at graduation. To have a successful industry, a workforce must be trained in skills that meet the industry\u27s needs. In that regard, this study consisted of a survey of leaders in the commercial space industry to identify the different skill-sets sought by the industry. The results of the industry surveys were used in the development of an undergraduate degree in Commercial Space Operations in the College of Aviation at Embry-Riddle Aeronautical University. The findings indicated that the needs of the industry are dynamic and multi-disciplinary in nature and ranged from business planning and space policy to human factors and propulsion. The broad spectrum of needs identified indicate that the industry is fluid with evolving needs. To remain on the forefront of commercial space education, the curriculum must reflect the needs of the industry as the industry evolves. Thus, continual feedback and partnership must be pursued with the industry to ensure that future graduates of the degree possess the skills to pursue a productive career in the commercial space industry

Proceedings of the Seventh Annual Summer Conference. NASA/USRA: University Advanced Design Program

The Advanced Design Program (ADP) is a unique program that brings together students and faculty from U.S. engineering schools with engineers from the NASA centers through integration of current and future NASA space and aeronautics projects into university engineering design curriculum. The Advanced Space Design Program study topics cover a broad range of projects that could be undertaken during a 20-30 year period beginning with the deployment of the Space Station Freedom. The Advanced Aeronautics Design Program study topics typically focus on nearer-term projects of interest to NASA, covering from small, slow-speed vehicles through large, supersonic passenger transports and on through hypersonic research vehicles. Student work accomplished during the 1990-91 academic year and reported at the 7th Annual Summer Conference is presented