[EMAIL PROTECTED] wrote:
I recieved this message back from ATL.
I must also note that I only looked into using bladder systems for
H2O2/Hydrocarbon applications. I never plan on using cryogenic propellants.
(goes against the fun of using peroxide) :)
Sean (see message below)
Mr. Daly:
We b
I recieved this message back from ATL.
I must also note that I only looked into using bladder systems for
H2O2/Hydrocarbon applications. I never plan on using cryogenic propellants.
(goes against the fun of using peroxide) :)
Sean (see message below)
Mr. Daly:
We build H2O2 bladders from EP
y, November 13, 2002 6:40 PM
To: [EMAIL PROTECTED]
Subject: Re: [ERPS] Armadillo flight checklist
At the risk of stating the obvious, I want to mention that atmospheric
drag can put you into a negative G situation just by throttling back far
enough while still climbing. A draggy vehicle like the one JC i
Sean Patrick Daly wrote:
SPD> I have been concentrating on the piston tank design so far, as it suits my
SPD> needs, and I am WAY behind most of you in the development cycle. The bladder
SPD> design looks to be much lighter and more efficient, but looks to be more
SPD> cumbersome to implement, so
ean Patrick Daly
Sent: Thursday, November 14, 2002 8:14 AM
To: [EMAIL PROTECTED]
Subject: RE: [ERPS] Armadillo flight checklist
This once again makes me weary about pressurized/gravity feed tanks. From
the earliest stages of my designs, I have always wanted to implement a
solution that would ensure
but looks to be more
cumbersome to implement, so I'll stick to the piston for now.
Sean
-Original Message-
From: [EMAIL PROTECTED]
[mailto:erps-list-admin@;lists.erps.org]On Behalf Of David J. McCue
Sent: Wednesday, November 13, 2002 6:40 PM
To: [EMAIL PROTECTED]
Subject: Re: [ER
Ok, one potential issue is slosh on the way up (wind shear etc.)
Ok. You're going to be pulling higher g's for this one for a significant
time, so slosh may be somewhat worse.
Any slosh baffles, or are your attitude jets strong enough to compensate
for worst case displacement?
How about dynami
At the risk of stating the obvious, I want to mention that atmospheric
drag can put you into a negative G situation just by throttling back far
enough while still climbing. A draggy vehicle like the one JC is going to
fly will decelerate very quickly in air. I suspect that he will have to
throttle
At 05:39 PM 11/13/2002 -0500, you wrote:
What size chute are you using? Are you landing with active
attitude engines?
Dan
___
We are using a Butler Parachutes Lo-Po 550 (low porosity, 550 square
feet). Descent rate should be around 21 fps with 285 pounds suspended
under the canopy.
This te
What size chute are you using? Are you landing with active
attitude engines?
Dan
___
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At 04:58 PM 11/13/2002 -0500, you wrote:
I sure hope you don't mean a 'live' Pilot - *extremely* strong
recommendation to use a sandbag ballast multiple times.
Dan
Oh, of course! This is strictly remote piloting. We are still debating
whether we will do a manned flight with the supersonic ve
I sure hope you don't mean a 'live' Pilot - *extremely* strong
recommendation to use a sandbag ballast multiple times.
Dan
In a message dated 11/13/02 12:23:26 PM, [EMAIL PROTECTED] writes:
<< We are intending to fly the tube vehicle untethered on Friday in
Oklahoma. >>
___
Make sure you approach apogee slow enough that you don't get near
zero or negative G's, causing the peroxide to move away from the
feed plumbing. Or, realize that the engines may temporarily shut
down, with major peroxide slosh, and deal accordingly.
Dan
In a message dated 11/13/02 12:23:26 PM,
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