TT18-A Launch Stability Enhancer dV gain trick

[juvilado]

Hi, just a trick for gaining "free" dV at launch. 

You can set the TT18-A Launch Stability Enhancer ad high as you want (inside limits of the building) in the VAB, so when you launch, you can gain 100 dV or more by height.

https://imgur.com/a/hUOAh8k

[Stamp20]

Combine it with a higher launch site like Dessert or a KK launchsite, and you get even more.

[Starman4308]

First, that's a hair cheaty.

Second, unless you're trying to use vacuum engines, 100 m/s is likely a huge overestimate. It gives you an almost negligible amount of velocity and gravitational potential energy. You do have less back pressure from atmo, bringing Isp closer to vacuum levels, but you're not going to get enough to justify switching to vacuum engines without either mods or craft file editing.

[juvilado]

4 hours ago, Starman4308 said:

First, that's a hair cheaty.

Second, unless you're trying to use vacuum engines, 100 m/s is likely a huge overestimate. It gives you an almost negligible amount of velocity and gravitational potential energy. You do have less back pressure from atmo, bringing Isp closer to vacuum levels, but you're not going to get enough to justify switching to vacuum engines without either mods or craft file editing.

First, nothing is wrong if we "adjust" the height of the enhacer. As i read somewhere, IRL they have the calculus and in KSP we have the money and parts. X-D

But of course, it is up to each one to do it or not.

Second, you're right. I meant the rocket can start above +100m higher using the enhacers. I don't know how many m/s are gained...