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