Institute of Aeronautics and Space. For its 4-stage rocket, it used the following engines from IAE itself.

-1st stage: 4 x S-43
-2nd stage: 1 x S-43TM
-3rd stage: 1 x S-40TM
-4th stage: 1 x S-44

-All these engines used solid HTPB fuel.

Algún detalle más de los motores cohete de ésta marca:

-El S-30 de combustible sólido daba 2090 Kgf. En el cohete VLM.

-El S-40TM también de combustible sólido con 21250 Kgf para los cohetes VLM y VLS del año 1997.

-Un S-43 de 30900 Kgf. en el VLS.
-El S-43TM con 32700 Kgf.
-El S-44 de sólo 3390 Kgf.

From Appendix 6: It is the Institute of Aeronautics and Space. (Instituto de Aeronáutica e Espaço).

-They are dedicated to space study and development with their rocket program, the "Cruzeiro do Sul". They developed the following satellite launch vehicles:

-El VLS Alfa,
-VLS Beta,
-VLS Gama,
-VLS Delta y
-VLS Epsilon.

"The Brazilian Rocket"

-In terms of engines, we start with the small L15 that was developed towards 2007. It runs on alcohol and liquid oxygen and generates 15 kN.

“L15 nozzle details”

-The fuel supply to the L15 engine (just like the small L5 with kerosene/LOX (5 kN), was done by tank pressurization.

“L5 test”

-Nevertheless, the most ambitious engine is the L75 that delivered 75 kN running on kerosene and LOX but with fuel supply by turbopump.

“L75 engine - Photo IAE”

From Appendix 9: IAE built the following rocket engines:

-Sonda 1
-Sonda 1 booster
-S-31
-S-40TM
-S-43
-S-43TM
-S-44

In August 2012, IAE carried out this hot test on the L-1 rocket engine that works with ethanol and gaseous oxygen.

-The body is water cooled, and it is considered a test engine for the Institute.

“Running L-1”

"L-5 combustion chamber"

-In Brazil it is known as "Motora L-5". The land trials were made in 2011.

-Below a photograph of the complete engine with its nozzles for tests in the atmosphere.

“The L-5, exhibited”