I do not agree with You, IRstuff. The reports mentioned are "approved for public release", the source code is listed there and I can´t imagine what may be illegal on handing over these programs? BLAKE doesn´t calculate nothing else then CEA2 of the NASA - it only uses real gases instead of ideal...
I am looking for two FORTRAN programs called BLAKE and BRLCB which were established by the ARL, Aberdeen Proving Ground, MD, to estimate propellant constants (BLAKE) and calculate the propellant´s dynamic vivacity from the pressure-time-data of a closed vessel experiment (BRLCB). The user...
Did You ever try to change the settings in Excel 2003. It is possible to set the decimal separator to "point" instead of "comma".
You can find it in "Extras" - "Optionen" - "International" in Excel 2003! Set it to "point" for the separator and disable "Trennzeichen vom Betriebssystem...
To MLoew:
This shows only standard design. For advanced users try
http://www.roehrs.de/daempfungselemente.htm
It is the best for gun-relevant demands!
Andreas Nehme
mail@waffentechnik.com
Another information about the limits of CAD-data-transfer You can find at
http://www.datenaustausch.com (German text)
On sublevel "Produkte" you can find a link "Perfrormance Test" showing the horrible results of transferred geometry by different interchange formats...
Go to
http://www.elysiuminc.com/
there is an article about the theme You are searching for. Feature translating on CAD-systems is just in prototype-stadium!
Andreas Nehme
mail@waffentechnik.com
Do not relay on programs - set up Your own excel worksheets for spring calculation. All You need to know about springs is mentioned in
Metallfedern (Meissner/Schorcht, Springer-Verlag 1997)
ISBN 3-540-55892-6 (German text)
There are 3 different K-Factors (Göhner, Wahl and Bergsträsser) given...
I have tried Autocad with Mechanical Desktop, Inventor, ProE and SolidEdge and voted for the last. SolidEdge is very easy to use without reading the manual. Even complicated parts like pistol-receivers can be built up in a few hours. The tools You need are always in reach and you can concentrate...
I know that problem using Autocad a few years ago (we are using SOLID EDGE now). The only way to get rid of the point in a circle center is a lisp-macro which draws a pair of crossed lines (solid lines of the same width and color than the centerlines) on picking the circle. The marco is called...
Only for the second part of Your questions:
What kind of gun is it used for? A small arm or ...?
What principle is used? Muzzle-break, Jet-chamber or ...?
Give me some more information!
Andreas Nehme
mail@waffentechnik.com
Try
Transmagic from www.transmagic.com
or
3D_Evolution from www.coretechnologie.de
I tried Transmagic. It works fine for the standard formats like ACIS, PARASOLID etc. with the ability to repair the geometry. For the features of the construction try 3D_Evolution. They say, that they are able...
I have a THOSHIBA 3000-514 machine (1 GHz PIII, 512 MB Ram) with a Win 2000 Pro OS and a Solid Edge CAD-Program on it. It works perfect - CAD even on complicated 3d-parts like pistol-receivers etc. RAM (256 MB or higher) is most important on 3D-CAD.
I had some trouble with Win XP (always...
Hi to all,
pdfFactory from www.fineprint.com is an excellent tool. It is small and effective - installing nothing else than a printer which creates the pdf-files. Hyperlinks were recogniced and activated in the sheet.
Good Luck
Andreas
I think we are tlaking 4140 (=42CrMo4) here with the material key number (German steel key) 1.7225 without additional sulphur content.
1.) You won´t reach 1531 N/mm^2 at any condition
2.) yield point or break point - what You are looking for
3.) mechanical property is also a function of...
@ybjack
We are talking about technical data here (Tables and so on). An English data-table is like a German - perhaps the units will be different. If there are problems to understand, You should download a free German-English (D->E) and English-German (E->D) wordbook (QuickDic 5.2) at...
Hi Woody1,
don´t look at the drum - the really problem is the nickel foil. Let´s have a look to the energy content of Lithium layer - at 600°C it is 2.03 J/mm foil when Li has specific heat of 3.58 kJ/(kg*K) and a density of 530 kg/m^3.
The heat transfer coefficient of Ni is 89.99 W/(m*K), the...
You are on the right way CoryPad. I found a table for class 40 gray iron at
http://metalcasting.auburn.edu/data/Class_40_Iron/Class40Iron.html
giving 912 J/(kg*K) for 1400°C. The table does not exeed to 1510°C we need here. But there won´t be a great difference to the number we are looking...
There is a way to do it. All parts have to be inserted as "block". A lisp-routing (I think it is under the support directory of ACAD) is able to count the "blocks" and write it to an ASCII-file which can be imported by EXCEL. If You add attributes to the blocks like price per...
I am not permanently involved in manufacturing processes but the thumb rule is soft carbide for hard material and hard carbide for soft materials. The coatings like TiAlN will cause longer lifetimes of the cutting tool but the tools should be deburred perfectly before coating. If not the coating...
IRstuff is right the solar heat radiation at the ground is nearly 1000 W/m^2. For more information visit the German website http://www.solarkonstante.de/sonne getting a fine overwiew of the radiation spectrum of the sun and a top-50 solar-energy-link-site.
Andreas
