different rendering of two different documentclasses

The rendering above the red line(zoomed in) was a result of: \documentclass[journal]{IEEEtran}

The rendering below the red line(zoomed in) was a result of: \documentclass[journal]{AIAA}

Why is there such a huge difference? Can I change something in the AIAA class file so that it yields results similar to the IEEEtran class file?

  • 2
    I do not have AIAA.cls, but it clearly uses bitmap fonts. Not having the document class, I am not going to provide you with a definite answer, but perhaps take a look at this article: dsanta.users.ch/resources/type1.html Oct 31, 2011 at 9:24
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    We also have a few questions related to this issue (bitmap fonts) on this site. For example, tex.stackexchange.com/q/1291/86 seems relevant. You'll find more if you search for bitmap fonts. Oct 31, 2011 at 9:26
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    Also note that there appears to be a newer version aiaa-tc.cls since 2004 which uses vector fonts by default (\documentclass{aiaa-tc}). Documentation: tug.org/texlive/Contents/live/texmf-dist/doc/latex/aiaa/… Oct 31, 2011 at 9:32
  • @HarroldCavendish: I believe this could be an answer. Oct 31, 2011 at 9:49
  • @Andrey Vihrov: I shall wait for the OP's word before writing and answer because I am a little unsure whether the aiaa-tc class is what he is looking for – it creates a single column article, while the aiaa a two column one. Most recent journal articles downloaded from the AIAA website feature a two column layout and the new class is most probably intended only for technical conference papers. From what I have read, it appears that aiaa.cls was used only for simulating journal appearance. The only official template that the AIAA provides is called “AIAA Meeting Papers Template”. Oct 31, 2011 at 10:13

1 Answer 1


After downloading the LaTeX template containingaiaa.clsfrom the AIAA official website and installing a couple of obsolete packages, most importantly dropping, I have found that the output uses vector Type 1 fonts.

The solution is therefore, as suggested by Stefan Kottwitz, in Why are Bitmap-Fonts used automatically? to install the cm-super package.

However, the aiaa.cls seems to be obsolete, which is indicated even by its placement in a folder named pre2004. Therefore I recommend usingaiaa-tc.clswhen possible.

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    And someone should contact the AIAA to update their LaTeX class. LaTeX really isn't rocket science. :-) Oct 31, 2011 at 11:18
  • I had some issues with aiaa-tc.cls.... Therefore I think I will continue with aiaa.cls for the present... The problem with cm-super is that Latex is not able to find it. Just installed it using the package-manager but still it doesn't recognize cm-super. :( Oct 31, 2011 at 14:27
  • @ShashankSawant Might be a silly question, but did it or you run updmap-sys? Oct 31, 2011 at 15:39
  • @HarroldCavendish How to run updmap-sys? Thanks for your previous advice! :) Nov 1, 2011 at 15:56
  • You could also use Latin Modern, same typeface, but with updated kerning and support for more languages.
    – Canageek
    Nov 4, 2011 at 6:33

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