# RequestArtemis landers

#### francisdrake

The propellant load stated above is for both tanks.
The drop tanks run empty just before landing, when coming from a 100 km orbit.

#### gattispilot

Any one tried to animate the legs,.... I tried in VB and when I went to select the group it CTD.

#### Gargantua2024

##### Active member
Dynetics HLS complete with Main Engines, RCS thrusters, landing orientation and a crude drop tank jettison feature....Press J to jettison drop tanks when fuel is less than 3.8 tons left. Retro and prograde orientation must be commanded manually also

A simple virtual cockpit was also added to see the interior (Ctrl+Up/Down to change position between Commander and Pilot)

Also, gattispilot, I added a mirrored copy of the drop tank mesh you made because VesselBuilder does not orient two meshes of the same name properly on one .CFG file

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#### 4throck

##### Enthusiast !
Gave it a try and got this:

The lander is about 90% smaller relative to the exhausts and the visible drop tank.
I guess I'm missing an updated mesh from a previous post

From this starting point the descent will be quite different from Apollo. And your deorbit burn will need to be very precise. Hard to do with a hover engine.
Interesting. I wonder if they are considering going for LEO first and aligning with the landing site there.

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#### Gargantua2024

##### Active member
I guess I'm missing an updated mesh from a previous post
Indeed, gattispilot has posted a scaled-up mesh on the previous page

#### 4throck

##### Enthusiast !
OK got the meshes but I'm still missing the textures. But that's not important right now.
Took if for some flying and I see that hover is configured as main thrust! This will mess up orbiter autopilots and just complicate things.
Just make it like the LM: hover engines.

#### 4throck

##### Enthusiast !
Just tried the Apollo 11 descent with the Alpaca and it's a smooth ride. I use PersuitMFD to land.
Jettisoned the tanks arbitrarily, and was glad to see that they move away nicely. No recontact.
Had to disable the Autopilot manually because it it kept firing at low trust. But after I cut the engine it landed in about 1 second.

Here's the Apollo 11 descent scenario for the Alpaca I mentioned, based on AMSO:

Code:
BEGIN_DESC
END_DESC

BEGIN_ENVIRONMENT
System AMSO\Sol
Date MJD 40422.8303040858
END_ENVIRONMENT

BEGIN_FOCUS
Ship ALPACA
END_FOCUS

BEGIN_CAMERA
TARGET ALPACA
MODE Extern
POS 6.129797 -52.228254 9.456707
TRACKMODE GlobalFrame
FOV 40.00
END_CAMERA

BEGIN_HUD
TYPE Surface
END_HUD

BEGIN_MFD Left
TYPE Orbit
PROJ Ship
FRAME Ecliptic
ALT
REF Moon
END_MFD

BEGIN_SHIPS
ALPACA:VesselBuilder1\Dynetictest
STATUS Orbiting Moon
RPOS -109617.86 -4038.49 1755935.42
RVEL 1686.294 -5.121 81.068
AROT -36.20 -53.39 123.40
AFCMODE 7
PRPLEVEL 0:1.000000
NAVFREQ 0 0
END
END_SHIPS

#### francisdrake

This is becoming a very nice addon!

When I try to jettison the drop tanks, I get a CTD. I guess I am missing a cfg-file for the jettisoned tanks.
May I suggest to put all meshes, cfg and scenarios into one zip-file? Thanks!

#### Gargantua2024

##### Active member
This is becoming a very nice addon!

When I try to jettison the drop tanks, I get a CTD. I guess I am missing a cfg-file for the jettisoned tanks.
May I suggest to put all meshes, cfg and scenarios into one zip-file? Thanks!
The drop tanks are classified as Stage.cfg when jettisoned

#### gattispilot

Nice. I guess we need 2 drop tanks.
On 4thRock's scn the lander seems to be upside down?
Can you add meshes by key in VB? If so maybe that is the way to do the ladder?

On the gear I get a CTD when I try to animate them?

#### Gargantua2024

##### Active member
Can you add meshes by key in VB? If so maybe that is the way to do the ladder?
Technically, you can't add a mesh by key on VB, but you can command an effect of it by pressing "Add New Configuration" then add the ladder mesh there....then on the Default Configuration, add another Event on "Events+Vessel Reconfiguration" and set it to "Reconfiguration 1"

However, if you plan to add solar arrays as separate vessels, they would detach from ALPACA once its been reconfigured because the attachments will be reset. But it is still possible to animate them as separate meshes

#### gattispilot

Oh. For the ladder would it be a separate mesh or the lander with the ladder?
And for the panels what if we have a stowed mesh and then an extended mesh.

So one config would be lander, no ladder and stowed arrays, another lander with ladder and deployed arrays. That way to take off you go to the no ladder and stowed array

#### Gargantua2024

##### Active member
So one config would be lander, no ladder and stowed arrays, another lander with ladder and deployed arrays. That way to take off you go to the no ladder and stowed array
Exactly!
And for the panels what if we have a stowed mesh and then an extended mesh.
Might work, but we still need to stow the arrays during ascent

#### gattispilot

No the arrays would not be animated. But have a lander mesh with stowed array. a lander, ladder and deployed array mesh.

1 mesh:
and another would have extended array and a ladder

Not sure on the animations though

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#### Gargantua2024

##### Active member
Main engines reconfigured as Hover engines...

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#### 4throck

##### Enthusiast !
You can make meshes (or mesh groups) "invisible" with animation by scaling to 0,0,0 with no time delay. The reverse is of course scaling back to 1,1,1

" Main engines reconfigured as Hover engines... "
Just tried it and it works perfectly. Now PersuitMFD cuts the engines as expected and lands you right on the money.
The entire PDI sequence is solid, I get the Earth in the window at the appropriate places.

Here's a video of the Alpaca landing at the Apollo 11 site that shows how well is performs:

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#### gattispilot

Nice. What MFD is on the right?

Yes scaling would work for the ladder. and I guess have the arrays deployed and stowed together and select 1 reduce scale and then other normal scale. BUT for me I can't get the animation part to work.

Might add more detail into the interior front part.

#### 4throck

##### Enthusiast !
The MFD is Persuit MFD in landing mode.

"The landing mode can make an autoland on gravitational reference bodies with no atmosphere or tiny atmosphere (ex:Mars), with tailsitting or hovering method (pitch up or pitch down). "

As far as I know it's the best landing autopilot around. As long as your trajectory takes you close to the landing site (any base) it can course correct and land.
It doesn't fly the exact Apollo PDI trajectory but can land the AMSO LM with no problems. Close enough for me.

The interior seems fine, I'd just add the MFDs (if possible) and put two astros standing up. Perhaps make the hatch open (the astros should disappear when the hatch is open).

#### gattispilot

Adding the 2 guys wouldn't be an issue.