NASA Space Station On-Orbit Status 7 February 2020 – Combustion Experiments

Today- Confined Combustion: The crew continued the experiment using three acrylic samples with a combination of black and transparent baffles to ignite and observe combustion results. This project aims to study flame spread in confined spaces–specifically the interactions between spreading flames and surrounding walls. Flame spread in confined spaces (such as buildings and vehicles) may pose a more serious fire hazard than flame spread in open spaces because of acceleration caused by radiative heat feedback from the surrounding walls and a tunnel flow acceleration effect. However, several aspects of flame spread are difficult to study in normal gravity conditions. Gravity-driven buoyancy flow complicates the fire growth process and prohibits a fundamental understanding of the underlying physics. However, in microgravity, buoyancy is eliminated, allowing scientists to better study the physics of flame spread. SAMS-II (Space Acceleration Measurement System-II): The crew cleaned the SAMS II drawer screens. Space Acceleration Measurement System-II (SAMS-II) is an ongoing study of the small forces (vibrations and accelerations) on the International Space Station (ISS) resultin...

It’s a great feeling when you give someone a gift that they truly love, but it’s

It’s a great feeling when you give someone a gift that they truly love, but it’s even better when it doesn’t cost you an arm and a leg. Once in a while, it can be fun to surprise your partner with a high-end juicer or to give your mom the $150 food processor she’s had her eye on for a while. But when you’re just looking for a casual yet thoughtful item for someone in your life, there are plenty of gifts that cost less than $15 on Amazon — and I’ve rounded up some of the best ones for you right here. These gifts don’t just fall under one category, either. There are time-saving kitchen gadgets, popular self-care items, clever car accessories, travel must-haves, and more. Best of all, despite being some of the most affordable Amazon products, they don’t skimp on quality. In fact, some of these gifts, like the set of silicone kitchen tongs or the deck of cards with inspiring affirmations, have perfect, five-star ratings from reviewers. So, if you’re in need of the perfect holiday gift at a price that won’t make you cringe, check out this gallery of some of the best finds on Amazon for under $15. Slicing your pizza efficien...