Sorry Marcin, I got that bit wrong (reheat).
Chris
Hi!
Yes the design is different, but the Mig 21 has the same role in
Russian air force.
But all Migs 21 has reheat and the Mig 21 bis (engine R-25-300 )has
"secondary reheat" it has max thrust of 9720 daN = 9908 kG on 4000 m with
time limit of 3 minutes normaly this engine has 4020 daN = 4098 kG, and
6960 daN=7094kG with normal reheat.This fighters are still in use here in
Poland, Czech Rrepublic and many many countries.
Regards
Marcin
Chris Barker wrote:
>
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C M I Barker
Gamlingay, Cambridgeshire, Great Britain
mailto:imagopus@xxxxxxxxxxxxxxxx
mailto:chris_barker@xxxxxxxxx
YaC tel: +44 (0)7092 251126
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