It is the Japan Aerospace Exploration Agency that recovered loose projects such as those of the N-I, N-II and currently uses the N-IIB as a satellite carrier.

“Jaxa N-IIB”

In this expanded view, we can clearly see the four solid boosters that will come off once consumed.

-The S-210 and following probe series are valid for use.

-We show a Jaxa apogee engine used to orbit a satellite.

“Jaxa apogee engine”

-Jaxa brings together Japan's national projects such as this important satellite carrier platform.

"Jaxa rocket base"

-But what we are currently interested in is the hypersonic turbojet engine project for speeds greater than Mach 6.

-To do this, it would use a pre-cooler at the air inlet to the engine, cooled by the same hydrogen that it would consume.

-The purpose is to cool the air in the outlet, strongly heated by dynamic compression and lower its temperature at the entrance of the motor itself. This engine group is currently identified as the "S".

“Jaxa S-engine”

-On the left is the air intake. The heat exchanger (inter-cooler) is dark and inclined.

-The turbojet (gas generator), afterburner and the outlet nozzle.

From Appendix 10: A new photograph of an engine of this space organization has been found.

“JAXA LNG”

-It is a rocket engine running with LOX and LNG or Liquefied Natural Gas.

From Appendix 11: JAXA was formed in 2003 by a merger between ISAS, NAL and NASDA.