Re: Model Rocket Booster Engine for Picosatellite
Thanks Joe.
What an exciting concept.
Having got really enthusiastic, I thought I would roughly calculate how high one of these little rockets could raise the orbit.
Given that one rocket reload pack has
40 Newtons of thrust and lasts for about one second We have 40 Newton seconds of specific impulse.
The mass flow rate is 18.6g in one second or 0.0168kg/s
So.....the ISP (a bit vague here) is around 219 seconds (ave thrust / mass flow rate / 9.81ms^2)
Which should get a 3.7kg satellite's apogee about..... 40km higher.
So...Not enough for P3E then
Oh well, not so exciting after all. Time for a beer.
73 David G0MRF
In a message dated 17/01/2012 03:56:37 GMT Standard Time, rhyolite@nettally.com writes:
Has anyone seen this. I am surprised a shuttle mission permitted this type of booster. From what I believed, safety concerns prevented most types of boosters.
http://www.rocketryplanet.com/content/view/3706/30/#axzz1jgQ85qx1
-- Joe Leikhim
Leikhim and Associates Communications Consultants Oviedo, Florida
www.Leikhim.com
JLeikhim@Leikhim.com
407-982-0446
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_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Aah but David, its a start along the lines you and I have been trying to drum up interest. You gotta crawl before you walk. As you know well, it's the way to start out in LEO (cheaper launch) and then nudge it into MEO. I said before, it's gonna happen since it's the obvious solution to getting to a better orbit. A lot to overcome but there's work going on now to get there.
Did someone say that the new Delfi satellite will have some thrust on board or was it a wishful dream on my part??
Regards...Bill - N6GHz
On 1/17/2012 11:42 AM, G0MRF@aol.com wrote:
Thanks Joe.
What an exciting concept.
Having got really enthusiastic, I thought I would roughly calculate how high one of these little rockets could raise the orbit.
Given that one rocket reload pack has
40 Newtons of thrust and lasts for about one second We have 40 Newton seconds of specific impulse.
The mass flow rate is 18.6g in one second or 0.0168kg/s
So.....the ISP (a bit vague here) is around 219 seconds (ave thrust / mass flow rate / 9.81ms^2)
Which should get a 3.7kg satellite's apogee about..... 40km higher.
So...Not enough for P3E then
Oh well, not so exciting after all. Time for a beer.
73 David G0MRF
In a message dated 17/01/2012 03:56:37 GMT Standard Time, rhyolite@nettally.com writes:
Has anyone seen this. I am surprised a shuttle mission permitted this type of booster. From what I believed, safety concerns prevented most types of boosters.
http://www.rocketryplanet.com/content/view/3706/30/#axzz1jgQ85qx1
-- Joe Leikhim
Leikhim and Associates Communications Consultants Oviedo, Florida
www.Leikhim.com
JLeikhim@Leikhim.com
407-982-0446
Note to GMail Account users. Due to an abnormally high volume of spam originating from bogus GMail accounts, I have found it necessary to block certain GMail traffic. Please phone me if you believe your message was not received.
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hi Bill,
It is certainly refreshing to see you, David, Joe, etal discussing new ideas, and methods, designs for our future hamsats....Kudos to Peter ESSA for their efforts..
I'm 90, and old man, but it gives me the same thrill I got 30 years ago when I made my first amateur satellite contact...I am well aware of the need for funds. but with the determination that all exhibit, it will get done....
You can surely imagine the "pie in the sky" it was in those early years...
All, keep up the good work!!!
Aah but David, its a start along the lines you and I have been trying to drum up interest. You gotta crawl before you walk. As you know well, it's the way to start out in LEO (cheaper launch) and then nudge it into MEO. I said before, it's gonna happen since it's the obvious solution to getting to a better orbit. A lot to overcome but there's work going on now to get there.
Did someone say that the new Delfi satellite will have some thrust on board or was it a wishful dream on my part??
Regards...Bill - N6GHz
On 1/17/2012 11:42 AM, G0MRF@aol.com wrote:
Thanks Joe.
What an exciting concept.
Having got really enthusiastic, I thought I would roughly calculate how high one of these little rockets could raise the orbit.
Given that one rocket reload pack has
40 Newtons of thrust and lasts for about one second We have 40 Newton seconds of specific impulse.
The mass flow rate is 18.6g in one second or 0.0168kg/s
So.....the ISP (a bit vague here) is around 219 seconds (ave thrust / mass flow rate / 9.81ms^2)
Which should get a 3.7kg satellite's apogee about..... 40km higher.
So...Not enough for P3E then
Oh well, not so exciting after all. Time for a beer.
73 David G0MRF
In a message dated 17/01/2012 03:56:37 GMT Standard Time, rhyolite@nettally.com writes:
Has anyone seen this. I am surprised a shuttle mission permitted this type of booster. From what I believed, safety concerns prevented most types of boosters.
http://www.rocketryplanet.com/content/view/3706/30/#axzz1jgQ85qx1
-- Joe Leikhim
Leikhim and Associates Communications Consultants Oviedo, Florida
www.Leikhim.com
JLeikhim@Leikhim.com
407-982-0446
-- Regards...Bill Ress High Sierra Microwave
73, Dave, WB6LLO dguimon1@san.rr.com
Disagree: I learn....
Pulling for P3E...
participants (3)
-
Bill Ress -
Dave Guimont -
G0MRF＠aol.com