Radial Decoupler

[Fadly]

Is there a way to make the radial decoupler not to leave a stub? I've been baffled before by the side boosters often hitting my rocket upon separation, which require the installment of sepratron rocket. For sometimes I couldn't figure out why. I thought maybe it's some kind of bug, until one day I decided to build a gravity bomb. Upon release, I switch view to the bomb and notice the decoupler's stub is messing up the airflow. Is there any way to address this issue?

Edited June 24, 2019 by Fadly

[Foxster]

Yes, use hardpoints instead. 

I've no idea why these are in the Structural group instead of Coupling. 

They come in two handy sizes, have lower drag than radial decouplers and leave no stub. 

Fit them (or radial decouplers for that matter) about 1/3 of the way from the top of the stack being decoupled and the the stack will be thrown clear of the remaining craft. 

[Fadly]

 

21 hours ago, Foxster said:

Yes, use hardpoints instead. 

I've no idea why these are in the Structural group instead of Coupling. 

They come in two handy sizes, have lower drag than radial decouplers and leave no stub. 

Fit them (or radial decouplers for that matter) about 1/3 of the way from the top of the stack being decoupled and the the stack will be thrown clear of the remaining craft. 

I think you misunderstand. What I mean is the stub left behind on the discarded side boosters, not on the center booster. hardpoints also leave stub on the discarded parts as well. I experience this when I attempted to build a plane with drop tanks. The discarded tanks going up instead of down and wacked my horizontal stabilizer.

Edited June 25, 2019 by Fadly

[bewing]

There is no way to make a decoupler vanish after decoupling.

The only way to decouple from both sides at the same time is with a separator, rather than a decoupler. Then the separator will fall away by itself. It can still hit things on the way down, of course.

However, if you are having problems with the spent SRBs impacting the main rocket after decoupling, then it generally works better to A) move the decoupler up the side of the SRB, so that it forces the top of the SRB away from the core rocket, B) use aerodynamics (fins) to make the SRB fly even further away from the main rocket after it is decoupled.