Broadcast 3307 Bruno Mombrinie

Feedback: What did you think of this show?: 

Guest:  Bruno Mombrinie; Topics:  The Metro Hop concept and plan for a fixed wing eVTOL passenger and cargo commercial plane service.  See a and their video. 

Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website,  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See   

We welcomed Bruno Mombrinie to the show for a one segment 87 minute in-depth discussion about the Metro Hop project.  Be sure to watch their 2.5 minute introductory video on the Metro Hope website,  We started the program by suggesting listeners watch the short Metro Hop video on their website, then our guest began explaining both the concept and the vehicle to us.  Note that the vehicle is all electric, essentially a fixed wing eVTOL type of airplane. Check out the photos of it.  The passenger version has two people aboard, great views, and is autonomous, that is, no pilot.  We talked about not having a pilot for quite a while.  Bruno explained the operations center, I compared it to drones so don't miss what he said about my comparison.  He also made comparisons to self-driving cars, and explained why the economics of the vehicle and the  concept demanded the Metro Hop plane be autonomous.  In the process of going through this discussion, Bruno also went over the technology, the tech specs and more.  Make sure you listen to all of what he talked about and if you have questions, please post them on the blog as Bruno will see them and likely respond to you.

Marshall was our first caller.  He talked about other somewhat similar planes and technologies, cruising speed, pilot vs. no pilot and more.  With Marshall asking questions, we talked about the operational altitude of Metro Hop which would be in the 2-3,000 foot range.  We learned that initially the vehicle would be VFR.  Part of the reason for this included weight and mass concerns.  Bruno discussed their design options for fly by wire and explained why they were rejected for the early Metro Hop project. 

Listeners sent in several email questions, many with a focus on the needed regulations to make this possible. Bruno talked about the FAA and changes necessary there.  He then said, in response to my asking him about local regs say from San Francisco and nearby towns plus California, that the project depended on community acceptance.  He went into more detail about why Metro Hop would land and take off on the top of buildings.  At one point he said they might have to build their own rooftop buildings for the project.  To make this possible, Bruno explained in detail the special Metro Hop landing gear.  Don't miss this discussion.  Share your thoughts with us by posting on the blog.

In addition to these and other topics, I asked our guest about financing and timelines.  Initially they need about $25 million in seed money.  They then need abut two years for a working demo - two planes.  Eventually then will need a few hundred million in capital.  Bruno explained why the Metro Hop project was a hard sell for venture capital folks (long payout period) so he said they were looking for strategic partners to make it happen.  He explained his strategic partner idea in detail while providing us with an early progress report on their efforts to date.  All told, he suggested 7-10 years to commercial operation including FAA and additional regulatory needed time. 

Bruno was asked about competition.  Don't miss what he said about the concept, an eVTOL plane and direct competition to Metro Hop.  Listener Alice asked him about the battery pack for the plane, wondering if they would be like what is used for an electric car such as a Tesla.  Bruno had much to say about the battery pack, changing out the batteries for fully charged batteries by a robot as the plan was landing and more.  Listener Todd asked about the issue of liability insurance.  Bruno was later asked about noise, accidents on takeoff or landing, the public fear factor of not having a pilot on board, and if Metro Hop had expansion plans. In addition, he was asked about a fixed schedule or would the vehicle be available on demand. 

The subject of markets for the vehicle came up. Bruno said an average flight might last around ten minutes.  He went through multiple potential markets including healthcare.  Don't miss what he said about market and flight opportunities.  Also the potential of using the vehicle for tourism.  Toward the end of the program, Tim called wanting to know if the vehicle could be used for emergency uses and search and rescue.  Bruno said that was not a good use of it and explained why.  Make sure you hear his explanation.

Bruno signed off with closing comments you will want to hear. Make sure you post your comments/questions on our blog for this show.  You can reach Bruno though his website or me.




Metro Hop - Flying Cars for real

WARNING: Using Disqus Comments on the Space Show:

To ensure your comments do NOT get caught in the Disqus automatic spam filter systemplease login to your Disqus account or create a verified/approved Disqus account.

Posting multiple URL links WILL TRIGGER the Disqus automatic spam filter system.

30 Apr 2019 Bruno Mombrinie
Your Amazon Purchases Helps Support TSS/OGLF (see

The Space Show Toll Free Number is only available on live broadcast programs. Please call 1-866-687-7223

  • The Space Foundation Conference

  • moonwards-logo