<blockquote><font class="small">In reply to:</font><hr /><p>There is a third Buran, with jet engines<p><hr /></p></p></blockquote><br />The number of orbiters is an answer that economists like: "it depends". The answer depends on what you want to represent. All-in-all there were 13 airframes constructed, 5 space-faring and 8 test frames. The full inventory is as follows:<br /><br />Eight test frames:<br />OK-GLI - Aero tester (now on display in Sinsheim Germany, one with jet engines)<br />OK-TVA - Static tester (now on display in Gorky Park)<br />OK-ML-1 - Mockup tester (can be seen in outside some photos of Baikonaur)<br />OK-ML-2 - Mockup (in the MIK facility at Baikonaur)<br />OK-KS - Electronic/Electrics tester (now at Energia, Korolev)<br />OK-TVI - Heat and vacuum tester (location unknown)<br />OK-005 - Vibration tester (location unknown)<br />OK-008 - Vacuum tester (location unknown)<br /><br />Five production frames (only 1.01 was near completion and flightworthy):<br />1.01 - Buran herself (destroyed in the building collapse)<br />1.02 - Ptichka (unclear location: either in Baikonaur or in the Energia factory)<br />2.01 - First of the second series (Sinsheim Germany)<br />2.02 - Second of the second series (partially dismantled at the Tushino Machine Factory, Moscow)<br />2.03 - Third of the second series (destroyed)<br /><br />The second series differed from the first primarily in that the cockpits were upgraded.<br /><br />Footnote: As you can see, the Germans collected a bunch of these. Makes you go, hmmm... <img src="/images/icons/smile.gif" /><br />