Need some help with circularisation burn RSS/RSS/RP1

Hello guys, this is the first time I play RSS/RO/RP1, I’ve been studying a lot of stuff, other vessels designs, ideas, physics and math; just to be as professional as could be. However, with the above I still have problems getting to orbit even I have 9.792 DV with KER and 9587 with Mechjeb; so here is the think:

My first stage is a NAA-75-110A series
Second stage is the AJ10-27 (include RCS and separator motor to reduce ullage)
Third stage is the XASR 1

I’be tried the following orbital methods:
1. Perform gravity turn with Mechjeb and some seconds before reaching target AP turn off MJ, continue with SAS looking for a flat profile; before reaching AP T- 1:25 start rotating to get spin stabilization, T-1:00 start burning with a pitch between 3 and -10 degrees (have tried almost all pitch degrees); if you look at the design stage 2 and 3 must burn consecutively due to ullage.

2. Fly PVG with coasting, and repeat almost the same procedure as above starting with the spin stabilization.

With any of the above can’t get a stable orbit, must of them with a PE of -60 KM or 70 Km

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## Question

## Juan Pablo Montoya 0

Need some help with circularisation burn RSS/RSS/RP1

Hello guys, this is the first time I play RSS/RO/RP1, I’ve been studying a lot of stuff, other vessels designs, ideas, physics and math; just to be as professional as could be. However, with the above I still have problems getting to orbit even I have 9.792 DV with KER and 9587 with Mechjeb; so here is the think:

My first stage is a NAA-75-110A series

Second stage is the AJ10-27 (include RCS and separator motor to reduce ullage)

Third stage is the XASR 1

[DV](https://i.imgur.com/H3zKIm9.jpg)

[Upper Stage ](https://i.imgur.com/mzxeVQq.jpg)

[staging ](https://i.imgur.com/vV2Bup5.jpg)

I’be tried the following orbital methods:

1. Perform gravity turn with Mechjeb and some seconds before reaching target AP turn off MJ, continue with SAS looking for a flat profile; before reaching AP T- 1:25 start rotating to get spin stabilization, T-1:00 start burning with a pitch between 3 and -10 degrees (have tried almost all pitch degrees); if you look at the design stage 2 and 3 must burn consecutively due to ullage.

2. Fly PVG with coasting, and repeat almost the same procedure as above starting with the spin stabilization.

With any of the above can’t get a stable orbit, must of them with a PE of -60 KM or 70 Km

Really appreciate the help

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