![Figure 1 from Design of the variable exhaust nozzle control system for a small turbojet engine MPM-20 | Semantic Scholar Figure 1 from Design of the variable exhaust nozzle control system for a small turbojet engine MPM-20 | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/e05706c3b74a68bfaefc38b713b3104f9746ab43/1-Figure1-1.png)
Figure 1 from Design of the variable exhaust nozzle control system for a small turbojet engine MPM-20 | Semantic Scholar
Why don't US Air Force fighter jet engines have convergent-divergent nozzles for optimal performance like rocket engine bells? - Quora
![File:J79-IHI-11A turbojet engine(cutaway model) exhaust section & nozzle right rear view at JASDF Hamamatsu Air Base Publication Center November 24, 2014.jpg - Wikimedia Commons File:J79-IHI-11A turbojet engine(cutaway model) exhaust section & nozzle right rear view at JASDF Hamamatsu Air Base Publication Center November 24, 2014.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/0/04/J79-IHI-11A_turbojet_engine%28cutaway_model%29_exhaust_section_%26_nozzle_right_rear_view_at_JASDF_Hamamatsu_Air_Base_Publication_Center_November_24%2C_2014.jpg)
File:J79-IHI-11A turbojet engine(cutaway model) exhaust section & nozzle right rear view at JASDF Hamamatsu Air Base Publication Center November 24, 2014.jpg - Wikimedia Commons
![aerodynamics - Why are adjustable area jet engine nozzles mostly limited to military use? - Aviation Stack Exchange aerodynamics - Why are adjustable area jet engine nozzles mostly limited to military use? - Aviation Stack Exchange](https://i.stack.imgur.com/2ZX3F.png)