Viewing profile — chimere

Yard Stick PBC | Mechanical Engineer | On-site (Oakland, CA) | Full-time | https://useyardstick.com We are a climate tech startup developing a dramatically cheaper sensor for measu…

Yard Stick PBC | Climate Tech Hardware | https://www.useyardstick.com/ At Yard Stick, we’re inventing a new method of soil carbon measurement. Affordable soil carbon measurement wi…

Primarily it's ranchers and farmers globally who want to get paid to add carbon to their soils by adopting more soil-friendly practices. This is a rapidly growing market as more co…

Yard Stick PBC | Lead Hardware Engineer, Senior Electrical Engineer | ONSITE / HYBRID (Oakland) At Yard Stick, we value climate impact above all else. We help farmers get paid to f…

If you're interested in healthy soils, and particularly their enormous potential for carbon sequestration, consider joining my team at Yard Stick! We're building hardware that meas…

Interesting question - I'm not sure I know the answer but happy to speculate. Electrolysis certainly is a much tidier process than gasification, but everyone seems to assume it's p…

(Charm Co-founder here) Ultimately our goal is large-scale CO2 removal and sequestration with biomass. This process produces an excess of energy which we can sell in various forms …

10-20 tons per day is commercial scale. The prototype in this article was much smaller - running around 0.3 t/day.

(Co-founder at Charm) Fair points. I'm not going to defend corn ethanol - our process yields 10x more saleable energy per acre than corn ethanol. The energy crop we're currently fi…

Certainly we considered it. The problem is that on this prototype system we were operating with a sealed hopper. Thus any gas injected into the hopper would travel through the syst…

Also the USGS has this super cool map of potential CO2 storage in (under) the US: https://co2public.er.usgs.gov/viewer/

(Charm Co-founder here) Certainly - you're effectively describing biochar ( https://en.wikipedia.org/wiki/Biochar ) which historically has been used as both an energy source and a …

(Charm co-founder here) I love that video! That fluidization phenomenon is commonly used in large-scale gasification or combustion processes, see: https://en.wikipedia.org/wiki/Flu…

Charm Industrial [1] was recently mentioned on HN, with a novel approach to BECCS using grass to produce carbon-negative hydrogen. Grasses are the highest-yielding biomass per acre…

Perhaps you're thinking of Snake, built by Mark Setrakian? One of the most iconic battlebots ever. I could only find one video of him using the skeuomorphic controller [1], and a p…

This is called film cooling, and SpaceX actually does use it on their second stage engine, the Merlin vacuum variant (MVac). You can see the beautiful exhaust plenum wrapping aroun…

That's right. The most common polar orbits, sun synchronous orbits (SSO), are actually inclined at ~97 deg from the equator. This means that they're moving slightly opposite of the…

How does one get involved in a climate R&D group? Any more info you can share?

How does one get involved in a climate R&D group? Any more info you can share?

You're correct. In addition, it's important to note that conjunction (collision) risk is proportional to spacecraft cross-sectional area. Thus, even with 100 of these small 10cm x …

This launch was to 500km, and the Doves are around 150kg/m^2 (4.5kg / 0.03m^2). This puts their lifetime at around 5 years according to that linked plot. For reference, Planet's ea…

This actually uses control moment gyroscopes [1] in a scissored-pair configuration, the subject of my undergrad thesis. These differ from standard gyroscopes in that they are gimba…