Montgomery P.,NASA |
Reeves A.S.,COLSA Corporation
13th International Conference on Space Operations, SpaceOps 2014 | Year: 2014
The Huntsville Operations Support Center (HOSC) is a multi-project facility that is responsible for 24x7 real-time International Space Station (ISS) payload operations management, integration, and control and has the capability to support small satellite projects and will provide real-time support for SLS launches. The HOSC is a service- oriented/highly available operations center for ISS payloads-directly supporting science teams across the world responsible for the payloads. The HOSC is required to endure an annual 2-day power outage event for facility preventive maintenance and safety inspection of the core electro-mechanical systems. While complete system shut-downs are against the grain of a highly available sub-system, the entire facility must be powered down for a weekend for environmental and safety purposes. The consequence of this ground system outage is far reaching: any science performed on ISS during this outage weekend is lost. Engineering efforts were focused to maximize the ISS investment by engineering a suitable solution capable of continuing HOSC services while supporting safety requirements. The HOSC Power Outage Contingency (HPOC) System is a physically diversified compliment of systems capable of providing identified real-time services for the duration of a planned power outage condition from an alternate control room. HPOC was designed to maintain ISS payload operations for approximately three continuous days during planned HOSC power outages and support a local Payload Operations Team, International Partners, as well as remote users from the alternate control room located in another building.
Cecil A.J.,NASA |
Pitts R.L.,Computer Sciences Corp. |
Welch S.J.,Computer Sciences Corp. |
Bryan J.D.,COLSA Corporation
13th International Conference on Space Operations, SpaceOps 2014 | Year: 2014
The International Space Station (ISS) is in an operational configuration. To fully utilize the ISS and take advantage of the modern protocols and updated Ku-band access, the Huntsville Operations Support Center (HOSC) has designed an approach to extend high speed forward link access for payload investigators to their on-orbit payloads. This dramatically increases the ground to ISS communications for those users. This access also enables the ISS flight controllers operating in the Payload Operations and Integration Center to have more direct control over the systems they are responsible for managing and operating. To extend the Ku-band forward link to the payload user community the development of a new command server is necessary. The HOSC subsystems were updated to process the Internet Protocol Encapsulated packets, enable users to use the capability based on their approved services, and perform network address translation to insure that the packets are forwarded from the user to the correct payload repeating that process in reverse from ISS to the payload user. This paper presents the architecture, implementation, and lessons learned. This will include the integration of COTS hardware and software as well as how the device is incorporated into the operational mission of the ISS. Thus, this paper also discusses how this technology can be applicable to payload users of the ISS.
Pont G.,French National Center for Space Studies |
Belbis O.,French National Center for Space Studies |
Burger H.,French National Center for Space Studies |
Bornas N.,COLSA Corporation
Proceedings of the International Astronautical Congress, IAC | Year: 2012
DECLIC is a multi-user facility to investigate critical fluids behaviour and directional solidification of transparent alloys. As part of a joint NASA/CNES research program, the payload has been successfully operated onboard the ISS since October 2009. The operations and the ground segment have been prepared and developed so that the payload is operated in an effective way from the CADMOS control center (Toulouse, France), by using most of the functions proposed by the NASA's POIC (Payload Operations and Integration Center). For example, the internet is used as a connexion mean between the POIC and the CADMOS. The commands are sent via a secured connexion (VPN) while the telemetry is received via some non encrypted UDP ports. The operations have then been prepared in order to face the main limitations of the chosen way of connexion: - Because the internet is not an operational network, and also in order to reduce the operations costs by avoiding having people on console 24/7 at CADMOS, the alarms are processed by operational teams at POIC who are able to issue emergency commands if needed. - Because the UDP is a connexion less protocol, some telemetry packets are lost (typically much less than 1%). But, mainly because of the bandwidth limitations onboard the ISS, and because the DECLIC payload generates very large amounts of data (more than 1 TB since the beginning of operations), Removable Hard Disk Drives (RHDDs) are used to return the whole data to the ground as a reference data: the telemetry data is only used for realtime operations and rough analysis by the scientists. This example, and few others (the use of existing softwares, a web server development so that the scientists can have a real-time view of the payloads from their lab etc.) are detailed in the paper showing how we have made the DECLIC operations effective and successful. The paper also discusses how DECLIC will take advantage of future ISS space-to-ground communications and HOSC ground systems services upgrades to further enhance the science collection opportunities of the experiment.
Cook S.,Dynetics Inc. |
Mustakis S.,Dynetics Inc. |
White R.,Scitor Corporation |
Puckett J.,COLSA Corporation
61st International Astronautical Congress 2010, IAC 2010 | Year: 2010
Dynetics, Inc., in support of the U.S. Army's Space and Missile Defense Command (SMDC) and in partnership with the Colsa Corporation, is developing the Multipurpose NanoMissile System (MNMS) to fully enable the operationally responsive space goals of the Department of Defense (DoD). The need for on-demand intelligence and communications in remote geographical locations is increasing the requirement for rapidly deployable and tailorable space assets. Today, SMDC is developing multiple nanosatellites (nanosats) such as SMDC-ONE and Kestrel Eye. The personal electronics revolution that has put enormous processing capabilities into small hand-held devices is now being extended into space. Nanosats are emerging as key assets for a broad array of federal agencies including DoD, NASA, the National Science Foundation (NSF) and universities. Copyright ©2010 by the International Astronautical Federation. All rights reserved.
Ritter G.,Computer Sciences Corp. |
Pedoto R.,COLSA Corporation
SpaceOps 2010 Conference | Year: 2010
Scripting languages have become a common method for implementing command and control solutions in space ground operations. The Systems Test and Operations Language (STOL), the Huntsville Operations Support Center (HOSC) Scripting Language Processor (SLP), and the Spacecraft Control Language (SCL) offer script-commands that wrap tedious operations tasks into single calls. Since script-commands are interpreted, they also offer a certain amount of hands-on control that is highly valued in space ground operations. Although compiled programs seem to be unsuited for interactive user control and are more complex to develop, Marshall Space flight Center (MSFC) has developed a product called the Enhanced and Redesign Scripting (ERS) that makes use of the graphical and logical richness of a programming language while offering the hands-on and ease of control of a scripting language. ERS is currently used by the International Space Station (ISS) Payload Operations Integration Center (POIC) Cadre team members. ERS integrates spacecraft command mnemonics, telemetry measurements, and command and telemetry control procedures into a standard programming language, while making use of Microsoft's Visual Studio for developing Visual Basic (VB) or C# ground operations procedures. ERS also allows for script-style user control during procedure execution using a robust graphical user input and output feature. The availability of VB and C# programmers, and the richness of the languages and their development environment, has allowed ERS to lower our "script" development time and maintenance costs at the Marshall POIC. © 2010 by the American Institute of Aeronautics and Astronautics, Inc.