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S4S ensures safety of spaceflight, return of NASA’s SpaceX Crew-8
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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The Airspace Operations and Safety Program (AOSP) enables safe, sustainable, and efficient aviation transportation operations to benefit the flying public and ensure the global competitiveness of the U.S. aviation industry. We are transforming the future of aviation into a digital, federated, and service-oriented architecture that fosters the growth of safe airspace for all users.
By partnering with FAA, academia, safety experts, operators, manufacturers, municipalities, and other government agencies, we facilitate the integration of new aviation technologies, ensure airspace access for new entrants, and champion the success of increasingly autonomous operations. At AOSP, safety is at the heart of everything we do. We stand firm in our unwavering commitment to the safe integration of these vehicles.
AOSP Approach:
Efficient, Sustainable Aviation Operations Seamless Integration of Heterogeneous and Emergent Aviation Prognostic In-Time Aviation Safety Management System of Future Operations System Level Autonomy for Aviation Operations, Vehicle Command and Control Systems, and Safety Meet the diversity, density, and complexity challenges of future aviation AOSP Projects
Advanced Capabilities for Emergency Response Operations Project
Air Mobility Pathfinders
Air Traffic Management—Exploration (ATM-X)
System-Wide Safety (SWS)
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Last Updated Dec 17, 2024 EditorLillian GipsonContactJim Bankejim.banke@nasa.gov Related Terms
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By NASA
This article is from the 2024 Technical Update.
Multiple human spaceflight programs are underway at NASA including Orion, Space Launch System, Gateway, Human Landing System, and EVA and Lunar Surface Mobility programs. Achieving success in these programs requires NASA to collaborate with a variety of commercial partners, including both new spaceflight companies and robotic spaceflight companies pursuing crewed spaceflight for the first time. It is not always clear to these organizations how to show their systems are safe for human spaceflight. This is particularly true for avionics systems, which are responsible for performing some of a crewed spacecraft’s most critical functions. NASA recently published guidance describing how to show the design of an avionic system meets safety requirements for crewed missions.
Background
The avionics in a crewed spacecraft perform many safety critical functions, including controlling the position and attitude of the spacecraft, activating onboard abort systems, and firing pyrotechnics. The incorrect operation of any of these functions can be catastrophic, causing loss of the crew. NASA’s human rating requirements describe the need for “additional rigor and scrutiny” when designing safety-critical systems beyond that done
for uncrewed spacecraft [2]. Unfortunately, it is not always clear how to interpret this guidance and show an avionics architecture is sufficiently safe. To address this problem, NASA recently published NASA/TM−20240009366 [1]. It outlines best practices for designing safety-critical avionics, as well as describes key artifacts or evidence NASA needs to assess the safety of an avionics architecture.
Failure Hypothesis
One of the most important steps to designing an avionics architecture for crewed spacecraft is specification of the failure hypothesis (FH). In short, the FH summarizes any assumptions the designers make about the type, number, and persistence of component failures (e.g., of onboard computers, network switches). It divides the space of all possible failures into two parts – failures the system is designed to tolerate and failures it is not.
One key part of the FH is a description of failure modes the system can tolerate – i.e., the behavior exhibited by a failed component. Failure modes are categorized using a failure model. A typical failure model for avionics splits failures into two broad categories:
Value failures, where data produced by a component is missing (i.e., an omissive failure) or incorrect (i.e., a transmissive failure). Timing failures, where data is produced by a component at the wrong time.
Timing failures can be further divided into many sub-categories, including:
Inadvertent activation, where data is produced by a component without the necessary preconditions. Out-of-order failures, where data is produced by a component in an incorrect sequence. Marginal timing failures, where data is produced by a component slightly too early or late.
In addition to occurring when data is produced by a component, these failure modes can also occur when data enters a component. (e.g., a faulty component can corrupt a message it receives). Moreover, all failure modes can manifest in one of two ways:
Symmetrically, where all observers see the same faulty behavior. Asymmetrically, where some observers see different faulty behavior.
Importantly, NASA’s human-rating process requires that each of these failure modes be mitigated if it can result in catastrophic effects [2]. Any exceptions must be explicitly documented and strongly justified. In addition to specifying the failure modes a system can tolerate, the FH must specify any limiting assumptions about the relative arrival times of permanent failures and radiation-induced upsets/ errors or the ability for ground operator to intervene to safe the system or take recovery actions. For more information on specifying a FH and other artifacts needed to evaluate the safety of an avionics architecture for human spaceflight, see the full report [1].
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By European Space Agency
On 4 December 2024, the European Space Agency (ESA) and the Indian Space Research Organisation (ISRO) signed an agreement that will see ESA provide ground station support to the missions in ISRO’s Gaganyaan human spaceflight programme.
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By NASA
jsc2024e064444 (Sept. 30, 2024) — The crew members of NASA’s SpaceX Crew-10 mission (from left) mission specialist Kirill Peskov of Roscosmos, NASA astronauts Nichole Ayers, pilot, and Anne McClain, commander, along with Mission Specialist Takuya Onishi of JAXA (Japan Aerospace Exploration Agency), pose for a picture during training at SpaceX in Hawthorne, California. SpaceX Digital content creators are invited to register to attend the launch of NASA’s SpaceX Crew-10 mission to carry astronauts to the International Space Station for a science expedition mission as part of NASA’s Commercial Crew Program. This will be the 14th time a SpaceX Dragon spacecraft launched by a Falcon 9 rocket takes crews to the orbital laboratory.
Launch of NASA’s SpaceX Crew-10 mission is targeted for no earlier than February 2025 on a SpaceX Falcon 9 rocket from Florida. The launch will carry NASA astronauts Anne McClain, commander, and Nichole Ayers, pilot, JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi, mission specialist, along with Roscosmos cosmonaut Kirill Peskov.
If your passion is to communicate and engage the world online, then this is the event for you! Seize the opportunity to see and share the #Crew10 mission launch.
A maximum of 50 social media users will be selected to attend this two-day event and will be given exclusive access to Kennedy.
NASA Social participants will have the opportunity to:
View a crewed launch of the SpaceX Falcon 9 rocket and Dragon spacecraft Tour NASA facilities at Kennedy Space Center Meet and interact with Crew-10 subject matter experts Meet fellow space enthusiasts who are active on social media NASA Social registration for the Crew-10 launch opens on Monday, Dec. 2, and the deadline to apply is at 10 a.m. EDT on Monday, Dec. 16. All social applications will be considered on a case-by-case basis.
APPLY NOW
Do I need to have a social media account to register?
Yes. This event is designed for people who:
Actively use multiple social networking platforms and tools to disseminate information to a unique audience. Regularly produce new content that features multimedia elements. Have the potential to reach a large number of people using digital platforms, or reach a unique audience, separate and distinctive from traditional news media and/or NASA audiences. Must have an established history of posting content on social media platforms. Have previous postings that are highly visible, respected and widely recognized. Users on all social networks are encouraged to use the hashtag #NASASocial and #Crew10. Updates and information about the event will be shared on X via @NASASocial and @NASAKennedy, and via posts to Facebook and Instagram.
How do I register?
Registration for this event opens on Monday, Dec. 2, and closes at 10 a.m. EDT on Monday, Dec. 16. Registration is for one person only (you) and is non-transferable. Each individual wishing to attend must register separately. Each application will be considered on a case-by-case basis.
Can I register if I am not a U.S. citizen?
Yes, this event is open for all to apply.
When will I know if I am selected?
After registrations have been received and processed, an email with confirmation information and additional instructions will be sent to those selected. We expect to send the acceptance notifications by Jan. 24.
What are NASA Social credentials?
All social applications will be considered on a case-by-case basis. Those chosen must prove through the registration process they meet specific engagement criteria.
If you do not make the registration list for this NASA Social, you still can attend the launch offsite and participate in the conversation online. Find out about ways to experience a launch here.
What are the registration requirements?
Registration indicates your intent to travel to NASA’s Kennedy Space Center in Florida and attend the two-day event in person. You are responsible for your own expenses for travel, accommodations, food, and other amenities.
Some events and participants scheduled to appear at the event are subject to change without notice. NASA is not responsible for loss or damage incurred as a result of attending. NASA, moreover, is not responsible for loss or damage incurred if the event is cancelled with limited or no notice. Please plan accordingly.
Kennedy is a government facility. Those who are selected will need to complete an additional registration step to receive clearance to enter the secure areas.
IMPORTANT: To be admitted, you will need to provide two forms of unexpired government-issued identification; one must be a photo ID and match the name provided on the registration. Those without proper identification cannot be admitted.
For a complete list of acceptable forms of ID, please visit: NASA Credentialing Identification Requirements.
All registrants must be at least 18 years old.
What if the launch date changes?
Many different factors can cause a scheduled launch date to change multiple times. If the launch date changes, NASA may adjust the date of the NASA Social accordingly to coincide with the new target launch date. NASA will notify registrants of any changes by email.
If the launch is postponed, attendees may be invited to attend a later launch date, but is not guaranteed.
NASA Social attendees are responsible for any additional costs they incur related to any launch delay. We strongly encourage participants to make travel arrangements that are refundable and/or flexible.
What if I cannot come to the Kennedy Space Center?
If you cannot come to the Kennedy Space Center and attend in person, you should not register for the NASA Social. You can follow the conversation online using #NASASocial.
You can watch the launch on NASA+ or plus.nasa.gov. NASA will provide regular launch and mission updates on @NASA, @NASAKennedy, and @Commercial_Crew, as well as on NASA’s Commercial Crew Program blog.
If you cannot make this NASA Social, don’t worry; NASA is planning many other Socials in the near future at various locations!
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