Ndiudze pamusoro peSukhoi-Gulfstream
Context:Sukhoi-Gulfstream S-21 yaiva Russian-American supersonic bhizimisi jeti.  Mukutanga kwema1990, Gulfstream Aerospace neSukhoi Design Bureau vakatanga kushanda pamwe chete kuti vagadzire ndege duku yebhizimisi inopfuura inzwi, yakatumidzwa kuti S-21. Nemhaka yechinetso chokutsvaka pamusika nokuda kwokushambadzira nendege, kuzvipira kwebasa racho kwakaderera uye kunonoka kwakawedzera.  Gulfstream pakupedzisira dissolved kudyidzana, kunyange Sukhoi akaramba basa iri S-21.  The S-21 aizova anokwanisa akaramba rwendo pana Mach 2 + uye zvikuru tsvakurudzo uye kukura kwave akaenda kupinda kurapa zvinonetsa transonic migumisiro kuitika chokuita pedyo Mach 1 mhepo aimhanya.  Kubva muna 2012, chirongwa ichi chakanga chisina kupihwa mari yenguva yekuvandudza ya2013-2025 uye chakaratidzika kunge chakamiswa.
The Sukhoi-Gulfstream S-21 aiva projected Russian-American supersonic mabhizimisi ndege.  Mukutanga kwema1990, Gulfstream Aerospace neSukhoi Design Bureau vakatanga kushanda pamwe chete kuti vagadzire ndege duku yebhizimisi inopfuura inzwi, yakatumidzwa kuti S-21. Nemhaka yechinetso chokutsvaka pamusika nokuda kwokushambadzira nendege, kuzvipira kwebasa racho kwakaderera uye kunonoka kwakawedzera.