Sent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone Get Outlook for Androidhttps://aka.ms/AAb9ysg ________________________________ From: Samudra Haque [TTLLC] [email protected] Sent: Friday, August 12, 2022 12:52:28 PM To: [email protected] [email protected] Subject: Re: [AMSAT-BB] Re: Phase IV satellite
In short thanks Ray KN2K yes, and you may find discussion of this type of maneuver in the papers across the last decade, but not only for LEO, but quite a lot of use cases. Perhaps not really from US sources as I would have liked.
I decided to contribute my flight software and hardware designs to Open Research Institute and the repo will be available soon. My son came down with Covid last week so it slowed up things at my home and work.
If anyone would like to replicate the EP firmware and hardware for Bricsat-p and Canyval-X and consider collaborating with me on improving its design for future amsat, the repo hosted by, and supported by ORI will be open to all. All hardware designs are still current.
My commercial patent on the topic of synchronization of arrays of such thruster devices may be useful for those who want to build scalable (uN-s to mN-s, steerable) contraptions and they could contact GWU or myself for details. But with either of those systems the work by GSFC (Flight Dynamics treatments) show practical uses of gravity manifolds for deep space (non-GEO, cis-lunar) trajectories using the flight control system I developed. But as I was not the main developer of the actual thruster, one needs to include a thruster selection in the trade study process (PPT, MEVAT, Hall, uCAT, MEVA, ...) and use it in *pulsed* mode.
For the adventurous, calculus wizardry will show benefit of store-idle-standby-run-fire modes of impulse burns quite a lot more efficiently than exoected.
My lines are open.
Samudra N3RDX Sent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone Get Outlook for Androidhttps://aka.ms/AAb9ysg ________________________________ From: crohtun--- via AMSAT-BB [email protected] Sent: Friday, August 12, 2022 12:31:33 PM To: [email protected] [email protected]; Daniel Schultz [email protected] Cc: AMSAT-BB [email protected] Subject: [AMSAT-BB] Re: Phase IV satellite
I should have added: at least in the case of LEO sats.
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On Friday, August 12, 2022, 11:28 AM, Mark Johns, K0JM [email protected] wrote:
The launch costs, while significant, are beside the point. The biggest issue with HEO satellites are the regulatory challenges. AMSAT and international partners could build and get ready for launch such a satellite within a few years, just as they did with AO-10, AO-13, and AO-40. But they would not get a license to put it into orbit in the current regulatory environment. The technical and financial challenges can be met, but the licensing requirements are killing us.
Just this month, a couple of NASA's own satellites had to be scratched from a launch because they did not meet the increasingly strict de-orbiting requirements for a license to orbit. (https://spacenews.com/nasa-cubesat-bumped-from-rideshare-launch-because-of-o...) And right now, even stricter international regulations are under consideration.
If NASA is having trouble meeting these restrictions, you can imagine how high the bar is for a non-profit organization of amateurs. Pipe dream all you want about launch opportunities, but if you can't get the necessary permits, it's just that -- pipe dreams. -- Mark D. Johns, KØJM AMSAT Ambassador & News Service Editor Brooklyn Park, MN USA EN35hd ----------------------------------------------- "Heaven goes by favor; if it went by merit, you would stay out and your dog would go in." ---Mark Twain
-- Mark D. Johns, KØJM AMSAT Ambassador & News Service Editor Brooklyn Park, MN USA EN35hd ----------------------------------------------- "Heaven goes by favor; if it went by merit, you would stay out and your dog would go in." ---Mark Twain
On Fri, Aug 12, 2022 at 8:43 AM Daniel Schultz <[email protected]mailto:[email protected]> wrote:
Rocket Lab's definition of "sensible cost" is $10 million. That is indeed a bargain price for a dedicated HEO mission. Do we think that AMSAT could raise that amount of money in a sensible amount of time?
Dan N8FGV
------ Original Message ------ Received: Thu, 11 Aug 2022 10:28:36 PM EDT From: Wendy and Terry Osborne <[email protected]mailto:[email protected]> To: [email protected]mailto:[email protected] Subject: [AMSAT-BB] Re: Phase IV satellite
With the recent success of Capstone and the Rocket Lab Photon spacecraft, it may be possible to put a transponder on a Photon mission to GEO at a sensible cost.
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