[AR] Re: Estimating Coefficient of Discharge (Cd)
- From: "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
- To: <arocket@xxxxxxxxxxxxx>
- Date: Mon, 15 Sep 2014 10:45:29 -0400
Why wouldn’t they? The dominating design consideration in terms of oxidizer
feed is still the Dp across the injector and you're still incorporating a
monopropellant as an oxidizer.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Monroe L. King Jr.
Sent: Monday, September 15, 2014 10:22 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
Right, but not the same issue as self pressurized hybrids. HTP hybrids are not
self pressurized and don't have pressure issues that a self pressurized hybrid
would. Correct?
Monroe
> -------- Original Message --------
> Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
> From: "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
> Date: Mon, September 15, 2014 7:07 am
> To: <arocket@xxxxxxxxxxxxx>
>
>
> The HTP hybrid will have the same issue and the same solutions. Classic, head
> end injected hybrids all have the same issues and it worsens exponentially as
> they upscale.
>
> Anthony J. Cesaroni
> President/CEO
> Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/
> (941) 360-3100 x101 Sarasota
> (905) 887-2370 x222 Toronto
>
>
> -----Original Message-----
> From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
> Behalf Of Monroe L. King Jr.
> Sent: Monday, September 15, 2014 9:49 AM
> To: arocket@xxxxxxxxxxxxx
> Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
>
> Yeah, not worth my time. I was working on a manifold idea for the Bloodhound
> motor at one time for a full pressure test. HTP hybrid wont have the same
> issue. Adding a bit of AP to the HTPB (5%) was also an interesting solution
> for that motor.
>
> Yeah, I just can't get into the hybrids. Not my thing unless they are
> pressurized versions.
>
> Monroe
>
> > -------- Original Message --------
> > Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
> > From: "Anthony Cesaroni" <acesaroni@xxxxxxxxxxx>
> > Date: Mon, September 15, 2014 6:02 am
> > To: <arocket@xxxxxxxxxxxxx>
> >
> >
> > It's not for the most part unless you have a pressure dependent fuel or the
> > fuel decomposition is independent and separate from the oxidizer/fuel main
> > stage, i.e. a staged combustion hybrid.
> >
> > Anthony J. Cesaroni
> > President/CEO
> > Cesaroni Technology/Cesaroni Aerospace http://www.cesaronitech.com/
> > (941) 360-3100 x101 Sarasota
> > (905) 887-2370 x222 Toronto
> >
> > -----Original Message-----
> > From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
> > Behalf Of Monroe L. King Jr.
> > Sent: Monday, September 15, 2014 1:03 AM
> > To: arocket@xxxxxxxxxxxxx
> > Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
> >
> > How efficient is that control on most hybrids? I understand regression rate
> > working in favor of the process. I do admit I have not run any calculations
> > for regression vs oxidizer flow. Is it close enough to make that much up?
> > If so it might rejuvenate some interest in hybrids for me.
> > I'll have to look into it I guess I may have overlooked something there.
> > My thinking was it wasn't enough.
> >
> > Monroe
> >
> > > -------- Original Message --------
> > > Subject: [AR] Re: Estimating Coefficient of Discharge (Cd)
> > > From: "Ray Rocket" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender
> > > "ar0cketman@xxxxxxxxx" for DMARC)
> > > Date: Sun, September 14, 2014 8:24 pm
> > > To: arocket@xxxxxxxxxxxxx
> > >
> > >
> > > --------------------------------------------
> > > On Sun, 9/14/14, Monroe L. King Jr. <monroe@xxxxxxxxxxxxxxxxxx> wrote:
> > >
> > > > Which is a big reason I don't much care for the way self
> > > > pressurized hybrids fly. I know they can't possibly be efficient.
> > > > (Unless fuel flow is controlled by oxidizer flow)
> > >
> > > Yeah, that's how hybrids work.
> > > Fuel regression rate is controlled by oxidizer mass flux.
> > >
> > >
> > > Ad Astra,
> > >
> > > Ray
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