Mathieu Johnsson

Writing about drones, electric aviation, ocean protection and... kitesurfing physics.
@marble_aero

[Mathieu Johnsson @mathieujohnsson]

Why are we still using endurance as a metric for UAVs?

Every other vehicle industry uses range.
If cars were optimized for endurance, we would all drive at 20mph on the highway.

[Mathieu Johnsson @mathieujohnsson]

@shriyanevatia @Quan2m2 Sounds great!

[Mathieu Johnsson @mathieujohnsson]

@Quan2m2 @shriyanevatia My tricks got you in - but you stayed past week one because building fleets of 100mph drones is just way too interesting

[Entrepreneurs First @join_ef]

11/ Founded by @mathieujohnsson, @Marble_Aero produces breakthrough unmanned electric aircraft for the drone industry. They are developing a metal 3D printed version of their MRB5 aircraft, making their drones more robust and better at dissipating heat. Marble will deploy MRB5 to enhance biodiversity observation capabilities in UK waters, in partnership with the UK Department for Environment, Food and Rural Affairs.

[Mathieu Johnsson @mathieujohnsson]

@HarryStebbings All modern straps are the same on HR accuracy/comfort. The difference will be on extra features.

If you need HR for managing interval intensity, consider "running power" as well (newer/better metric).

Can get it with the Garmin HRM strap

https://t.co/GxzSov3VeK

[Mathieu Johnsson @mathieujohnsson]

We're #hiring aircraft / system / software / computer vision engineers in #Bristol
You'll deploy to fight illegal fishing in two countries by end of year, and design second iteration of system.

[Marble @Marble_Aero]

We're hiring- if you want to build unmanned aircraft systems - hardware and software - to protect the oceans, get in touch!
https://t.co/VSCrJxRzjZ

[Claire Collins @clairesjcollins]

New paper out today https://t.co/7ZKdksIvxu examining why illegal fishing happens in remote, large-scale Marine Protected Areas. We identify the importance of #sharks and #socialnetworks in driving #IUU @ZSLMarine @ExeterMarine @OceanswellOrg @Marine_Science

[Mathieu Johnsson @mathieujohnsson]

@andrewjscott Tried Jira, Asana and Monday - settled on a custom setup in Notion, which works by far the best for us (very small team)

[Prof. Katharine Hayhoe @KHayhoe]

People worry about how much land we'd need to supply the US with clean energy. Well, @elonmusk and I have independently calculated it and we both come up with something roughly comparable to the area we currently use for maple syrup or golf. A square about 100-120 miles per side.

[Mathieu Johnsson @mathieujohnsson]

@bznotes Drone M&A for $400M of @Insitu_Inc by @Boeing in 2008.
Now doing ~$200M/year at ~40% gross margin in mil/gov't and moving to civilian.
With 15y of BVLOS ops/~15Mkm flown, they're miles ahead of most commercial ops
-> V. serious competition for large scale business deployments

[Marble @Marble_Aero]

Marble is a @TechCrunch and @WiredUK top pick from @efLDN EF7 Demo Day! https://t.co/1tfuh7CuZc

[Mathieu Johnsson @mathieujohnsson]

The most ambitious engineers build companies. Apply to @efLDN by 30th April for our Sept cohort https://t.co/fYMPNhHEGY

[Mathieu Johnsson @mathieujohnsson]

@openbionics @techstars Good luck for tomorrow! Can't wait to see what you produced for #DemoDay

[NASA @NASA]

Water! Strong evidence that liquid water flows on present-day Mars. Details: http://t.co/0MW11SANwL #MarsAnnouncement

[Marble @Marble_Aero]

Excited to be in the top 100 finalists of @The_Pitch 2015! Can't wait for the bootcamp http://t.co/Y8Gv7Edawa

[Mathieu Johnsson @mathieujohnsson]

Congrats @openbionics! Super excited for you, and can't wait for the next achievement

[Mathieu Johnsson @mathieujohnsson]

@SighSam I do and recommend it!

[Mathieu Johnsson @mathieujohnsson]

@timpinfocast Sounds exciting!

[Mathieu Johnsson @mathieujohnsson]

Congrats @PaulEremenko. Awesome to see @AirbusGroup joining @Airware, @Zee.Aero, Project Wing & co in CA to define the future of aerospace

[Formlabs @formlabs]

Day 2 of #SpaceTechExpo: Check out our own @walkerwill talking about #3dprinteddrones by @Marble_Aero at 10:50am on the free sessions stage.