Request Any SLS and Orion MPCV in development?

[Urwumpe]

Then the yellow line moves.

The yellow line(s) are the gravity vectors - if you look at the horizon, your rocket tilted slightly relative to the horizon.

More interesting would be the torque vector.

 

[gattispilot]

ok. I will take a image of that. As far as the vector controlled thrust. DaveS said your Ares had it. Could I not apply the principle to the SLS. Make the SLS have 1 thrust engine and 4 exhaust and 4 exhaust streams?

 

[Urwumpe]

ok. I will take a image of that. As far as the vector controlled thrust. DaveS said your Ares had it. Could I not apply the principle to the SLS. Make the SLS have 1 thrust engine and 4 exhaust and 4 exhaust streams?

You must have 5 thrusters for that to work, so you can set the thrust direction for every thruster individually.

With only one engine, you can only simulate some pitch and yaw, but the full three-axis control is only possible with at least two engines (gimballing in 2 axis each... or at least one gimballing around two axis and one having only one gimbal axis).

Forget what DaveS said about the Ares I-X. it does have 2D TVC on its single SRM plus roll RCS, but that's not what you need for the SLS. Only the pitch program stuff of it might be useful for you. That is why I posted the link to the old SDHLV add-on, it is closer to your project and has a similar TVC setup.

 

[gattispilot]

Ok. I will look at the code.
on the SDHLV. But first I need to figure why she won't fly straight

 

[Urwumpe]

Ok. I will look at the code.
on the SDHLV. But first I need to figure why she won't fly straight

Remember the physics: If she turns, there must be a torque. If there is a torque, there must be a force. No force, no turn.

 

[RonDVouz]

You mean like this image that shows the blue thrust line going in the z axis for the boosters. It shows it also in the main. The only difference is the yellow line.
https://dl.dropboxusercontent.com/u/71242599/slsbooster1.jpg

Here is an image of prelaunch and launch
https://dl.dropboxusercontent.com/u/71242599/slsflight.jpg
the blue thrust line is pointing up and align with the ship

Then the yellow line moves.

Man, that is a thing of beauty.

Excellent work, I'm sure you'll figure out the issues with the launch.

 

[gattispilot]

Thanks. I was able to get my ARV up with her:
https://dl.dropboxusercontent.com/u/71242599/slsarv.jpg

Since I am using 2 velcro Rockets with different CFG not sure how to get both and the main to fire at the same time, though

 

[RonDVouz]

"Houston, we have a good separation."

That looks amazing.

 

[Astro SG Wise]

Looking Good. I can't wait till it's published!:thumbup:

 

[gattispilot]

Here are 2 image. the left is the core the right is the booster.

https://dl.dropboxusercontent.com/u/71242599/slstorque.jpg

You can see the white line on the core change. Should the thrust point be where the thrusters are on the mesh?

 

[RonDVouz]

Curious, are you planning on using francisdrake's CEV-Orion when this is done?

I was thinking to DL this with the defunct Ares booster it has but I'm also a hold out for your design.

I'm rooting for ya!

 

[gattispilot]

Not sure. I have permission to use Donamy Orion

 

[Astro SG Wise]

Is it ok to have other people's addons in an add on you publish? Like if I make a rocket and want to have Francis Drake's Orion as a payload? Do I need the publisher's permission?

 

[gattispilot]

I think it might be nice to ask.

Not sure about the torque. Not sure if it is the touchdown points?

https://dl.dropboxusercontent.com/u/71242599/slstorque1.jpg

Here is the torque

 

[PhantomCruiser]

Is it ok to have other people's addons in an add on you publish? Like if I make a rocket and want to have Francis Drake's Orion as a payload? Do I need the publisher's permission?

When I released my Energia-M, I had written a scenario where you launch a comsat, I didn't include the add-on, but I did communicate w/ River to ask her if it was OK to include the scenario.

 

[gattispilot]

Any ideas about the flight dynamics?

 

[Urwumpe]

I think it might be nice to ask.

Not sure about the torque. Not sure if it is the touchdown points?

https://dl.dropboxusercontent.com/u/71242599/slstorque1.jpg

Here is the torque

The torque is produced by your engines or your lift function, not by the touchdown points - you should have no contact to the ground anymore at this point.

Like that, it looks like you have weak torque of 0.42 Nm there in this moment, making your vessel rotate towards the NW corner of the image, if I remember Orbiters coordinates correctly.

 

[gattispilot]

Ok so how do I fix it? on the lift function what should it look like?

 

[Urwumpe]

Ok so how do I fix it? on the lift function what should it look like?

If you have no lift function, it shouldn't matter.

But I doubt strongly that this is your problem. The behaviour of completely turning around sounds like a weak thruster firing or a thruster misalignment.

 

[gattispilot]

Well I have 4 thrusters equally spaced out.

I think I see it thruster #3 the y value was not negative as the others.

So once I fix that. And can both Velco booster to fire it might be ready for testing. I placed an attachment at the top of the core for payload.

I really like the Delta 4 payload and Falcon payload function. So You can see if the attachment point needs to be moved.