Need Copy of Original Barrowman Report

enderw88 · Dec 17, 2014

I am interested in reading Barrowman's original report. I have the download from Apogee, but it is missing pages 39-50 (the sections on Experimental Verifications and Conclusions). Does anyone have access to those pages?

I have read the Centuri and Estes technical reports which are watered down version of the original, I really want to see the original. It is becoming a quest...

scsager · Dec 17, 2014

Not sure if there is an explanation why those pages seem to be missing.

Here is a place to find more info on Barrowman's writings along with other important documents.

https://wiki.openrocket.info/Resources

markkoelsch · Dec 18, 2014

I also have a copy on rocketryfiles.com under technical
Articles. User name and password both guest.

Mark Koelsch
Sent from my iPhone using Rocketry Forum

enderw88 · Dec 18, 2014

markkoelsch said:
I also have a copy on rocketryfiles.com under technical
Articles. User name and password both guest.

Yours has the same problem. I emailed Apogee and that is all they have. Tim S think Mr Barrowman may still be active in northern Virginia.

rocketguy101 · Dec 18, 2014

markkoelsch said:
I also have a copy on rocketryfiles.com under technical
Articles. User name and password both guest.

Mark Koelsch
Sent from my iPhone using Rocketry Forum

it is missing the same pages the OP was asking about.

rocketguy101 · Dec 18, 2014

Barrowman's thesis is here https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20010047838.pdf

would that help?

billspad · Dec 18, 2014

enderw88 said:
Yours has the same problem. I emailed Apogee and that is all they have. Tim S think Mr Barrowman may still be active in northern Virginia.

Maryland. He's at TARC every year.

https://rocketcontest.org/pdf/Mentor_List.pdf

enderw88 · Dec 20, 2014

rocketguy101 said:
Barrowman's thesis is here https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20010047838.pdf

would that help?

I can't seem to get the server to let me download the file. It just hangs. Thanks for the link though.

rocketguy101 · Dec 20, 2014

enderw88 said:
I can't seem to get the server to let me download the file. It just hangs. Thanks for the link though.

try right mouse clicking the link and "save file as..."

billspad · Dec 23, 2014

enderw88 said:
I can't seem to get the server to let me download the file. It just hangs. Thanks for the link though.

I was able to download it to my phone. Do you want me to email you a copy?

enderw88 · Dec 23, 2014

rocketguy101 said:
try right mouse clicking the link and "save file as..."

That worked. Weird, I don't know why the browser choked on it. Thanks.

wfcook · Dec 24, 2014

So did someone find the full report then?

Sent from my iPhone using Rocketry Forum

rocketguy101 · Dec 24, 2014

enderw88 said:
That worked. Weird, I don't know why the browser choked on it. Thanks.

Firefox? that is what I use and it did the same thing.

wfcook: this is Barrowman's original college dissertation on CP calcs. The NARAM R&D report was probably derived from it.

wfcook · Dec 24, 2014

Ok thanks got it!

Sent from my iPhone using Rocketry Forum

markkoelsch · Dec 24, 2014

I am curious if any of the sim programs claiming to use Barrowman use the full version or do they use the abbreviated version most are familiar with? The abbreviated/streamlined version is simpler, but has more assumptions in it

enderw88 · Dec 24, 2014

markkoelsch said:
I am curious if any of the sim programs claiming to use Barrowman use the full version or do they use the abbreviated version most are familiar with? The abbreviated/streamlined version is simpler, but has more assumptions in it

That is one of my questions as well. I am working on OpenRocket adding some UI features to learn the code. Sampo has a very good technical document that describes the detailed inner workings. It looks pretty complete and in some cases goes further.

RockSim is a black box and it isn't clear to me exactly what it is doing. It crashes on me at least a few times per session and the UI has fallen behind OR quite a bit so I am only using it to look at designs already published.

markkoelsch · Dec 24, 2014

enderw88 said:
That is one of my questions as well. I am working on OpenRocket adding some UI features to learn the code. Sampo has a very good technical document that describes the detailed inner workings. It looks pretty complete and in some cases goes further.

RockSim is a black box and it isn't clear to me exactly what it is doing. It crashes on me at least a few times per session and the UI has fallen behind OR quite a bit so I am only using it to look at designs already published.

Rocksim crashes on you? Mine is very stable. I will have to, at some point, take a look at OR again. The early versions were clearly, to put it kindly, a copy of Rocksim's interface. I am not overly fond of it being a single java file- makes it a little tougher to edit things and add thing in bulk to the databases.

enderw88 · Dec 24, 2014

markkoelsch said:
Rocksim crashes on you? Mine is very stable. I will have to, at some point, take a look at OR again. The early versions were clearly, to put it kindly, a copy of Rocksim's interface. I am not overly fond of it being a single java file- makes it a little tougher to edit things and add thing in bulk to the databases.

Rocksim might be less stable on the Mac. Relatively speaking OR has been rock solid. The interface probably started out as a knock off, but there are a number of features there now that make if much better (I put in some!).

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