Argentina's SLV development

[MateAguado22]

Hi! I think its time to make an update on the Tronador/ISCUL proyect

Let's start with the actual prototype launch plan:

The Tronador II-70 will be the next prototype to take flight. It will be a kerolox single-stage sounding rocket 70 centimeters in diameter, with the goal of reaching 150 kilometers high and to test the second stage engine for the full scale Tronador II.
The current plan for the ISCUL program is to fly it 4 times, in Jan 2026, October 2026, April 2027 and March 2028.

Next is the Tronador II-150. It is also a single stage 150 centimeter kerolox demonstrator capable of reaching 400 kilometers in altitude. This one will feature a single MCA3 engine (full scale Tronador II will use 3 of these in the first stage). It will be launched two times, first in April 2029 and then in Feb 2030.

The full scale Tronador II-250's launch date is for now uncertain, it should be between mid 2030 to 2032, but there is not a precise date set for its launch.

While the TII-70 will be launched from Punta Indio like previous prototypes, TII-150 and TII-250 will be launched from the Manuel Belgrano Spaceport (CEMB). Both will launch from the orbital pad in there, where construction started a few years ago but has completely stalled for the last 5 years. The entire concrete platform is yet to be built.

So far prototypes of both first and second stages of the TII-250 have been static fired, with the MT-B engine tested last May. Meanwhile, several test tanks have been built, including a 2.5 m kerosene tank.

The MCA3 engine is an open cycle 350 kN first stage engine designed for the Tronador, with an Isp of 262 seconds. The MT-B is another open cycle engine, with 42 kN thrust and an Isp of 366 seconds. It features a vacuum optimized regeneratively cooled nozzle, and a combustion chamber manufactured using additive technology.

All information is sourced from CONAE and VENG official sources and officials.

[JetProp]

The MT-B is another open cycle engine, with 42 kN thrust and an Isp of 366 seconds.

366 seconds - impossible for open cycle with oxygen-kerosene. May be 266 seconds?

[MateAguado22]

The MT-B is another open cycle engine, with 42 kN thrust and an Isp of 366 seconds.

366 seconds - impossible for open cycle with oxygen-kerosene. May be 266 seconds?

Yes, i was thinking the same. I got that information from the VENG's webpage and documents (VENG is the engine manufacturer) - it may have been a typo