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Kerbal Dynamics: Navy SEALs!

ihtoit
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ihtoit

ihtoit

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Kind of an odd one this.

The Boffs upstairs have asked me to demonstrate a combined air, sea and land incursion system. Sounds like fun.

THE CHALLENGE:

Deposit a powered, wheeled passenger-carrying vehicle on The Island and park it in the old hangar. Plant a flag in the tower, return to your vehicle, and return to KSC.

THE RULES:

- Your first leg must be an aircraft. I don't care what kind of aircraft, the point is it must not only fly, it must also carry and deploy the second stage - over water.

- Your aircraft must return to KSC immediately after dropping the boat.

- Your second leg must be a water craft. It must contain a deck for a wheeled vehicle, which it must carry to the Island shore. It must also be able to retrieve the vehicle and return to the shore of the KSC peninsula.

- Your third leg must be a wheeled vehicle. It must have a carrying capacity of no less than TWO Kerbals. YOU MAY incorporate an amphibious design, however if you do this you MUST include a flat deck.

- Your aircraft MUST NOT approach closer than 5km from the Island. This is to prove the viability of your watercraft. And your low speed flying skills. Or lack thereof!

- All structural mods valid.

- NO OP parts, exploits, cheats, infinite fuel, or anything else which violates the laws of physics.

- ALL vehicles and Kerbals must survive.

No scoring, this is a "How Kerbal can you get?" challenge. You may combine modes, but you MUST mix propulsion. For example, jets/props/rotors for air mode, fans/props/jets (not to be used for air mode!) for water mode, electric wheels for land mode.

(Challenger's Note: I have an amphibious land/water rescue craft from a previous version that I'm going to use for this challenge providing I can rebuild it(!), all I need to add to it is the "air" bit which will more than likely be some sort of very heavy helicopter aircrane type thing, and electric wheelage.)

Edited by ihtoit
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ihtoit

ihtoit

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Challenger's Entry:

The old model:

1150677_330775420391795_1264600086_o.jpg

Holds about 20 from what I remember, top speed on water about 12m/s, land 25m/s. Catwalks along both sides from bow to stern, double decking at the stern (the lower deck doubles as a water platform).

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ihtoit

ihtoit

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DARPA were actually considering trying to build a combined submersible / aircraft.

go nuts! :D One thing I will say though is that between modes you MUST use separate propulsion systems (ie props/jets for aircraft mode, fans for water mode, electric wheels for land mode). Actually... slight rule readjustment :)

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ihtoit

ihtoit

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Does the aircraft have to be fixed wing or can I make it a nice strong VTOL dropship?

open design challenge - use whatever design you want. You could even use a nuke rocket VTOL. I do like the LAPES thing, I've tried it before in KSP but not met with much success (mod part wheels liked to fall off, explode, implode or clip through, impact speed too high, stock chutes cutting too soon (time to install Realchutes?), end result: not pretty). I'm not giving up on that though, might even make it into another challenge - if it can be successfully demonstrated here. :)

Thought: since RL LAPES uses pallets that are presumably collapsible and completely disposable, maybe there's a way to use the panel parts and a couple struts to make some sort of slide deck... and would that collapsibility offer enough of a cushion to mitigate impact shock on the payload?

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ihtoit

ihtoit

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that said - and this is why I asked about stall speed - the rule is that the deployment from the air MUST be onto the water. LAPES might not work too well unless it's either very well designed or the pilot is unbelievably lucky!

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Koolkei

Koolkei

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hello again ihtoit...

im gonna go try this one...

gonna go with the super simplistic design.

90% done.... just need some ironing of bugs and imperfection and what not

Edited by Koolkei
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Darren9

Darren9

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^ Thanks, the Seaplane Float is very old, not updated for .23 and goes in the old parts/plugin folders (I don't think Clever Bobcat even works anymore so no wheels but you'll need the Vanguard .dll to get the strong connection between the floats), probably the strongest float there is. And it is KAS, combined with IR which isn't very well at the moment - the whole thing only functions correctly occasionally :)

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ihtoit

ihtoit

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Does an amphibious seaplane count? I have a design that can fly, drive, and float including all transitions (land landing/takeoff, water landing/takeoff, water entry/exit on wheels).

Yes, but as previously mentioned you must use a different propulsion method for each mode (land, sea, air)

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Kasuha

Kasuha

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Yes, but as previously mentioned you must use a different propulsion method for each mode (land, sea, air)

I don't see any such rule in the OP. Besides, there's not enough options for that in stock KSP as rover wheels, rocket engines and SRBs are out of question in any reasonable boat or airplane design. My design has of course exactly one (jet) engine because it was okay for all purposes including moving on land. But I can stick some rover wheels to it if using electricity rather than fuel on land helps.

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gchristopher

gchristopher

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Does anyone have advice for getting the "rover drives on a flat deck" part?

If I make a ramp out of wing connectors or structural panels, what I'm seeing is that ruggedized wheels bottom out their suspension without lifting the rover, and don't seem to exert friction force on the ramp. Small gear bays don't show the same suspension failure, but are unpowered.

A ramp made entirely out of girder segments seems to work better with wheel collisions and friction, but driving over several segments seems to encounter weird collision box issues, and tends to spontaneously throw the rover into the air.

Is driving on ramps feasible in 23.5?

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ihtoit

ihtoit

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I don't see any such rule in the OP.

"No scoring, this is a "How Kerbal can you get?" challenge. You may combine modes, but you MUST mix propulsion. For example, jets/props/rotors for air mode, fans/props/jets (not to be used for air mode!) for water mode, electric wheels for land mode. "

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ihtoit

ihtoit

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I do believe that I will use this LAPES plane for the first leg of the challenge... maybe after I update it a bit (it was made in 0.22).

http://youtu.be/TOOSrr99mNc

Now, time to design a good ship and a rover, and stick them on!

that's a pretty plane... :)

Anyone else notice that the universal solution to challenges like this one is to use a skeleton lifter? Isn't anyone going to have a go with an enclosed cargo ramp?

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Kasuha

Kasuha

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"No scoring, this is a "How Kerbal can you get?" challenge. You may combine modes, but you MUST mix propulsion. For example, jets/props/rotors for air mode, fans/props/jets (not to be used for air mode!) for water mode, electric wheels for land mode. "

It's not in the part where rules are enlisted one by one, and I am not combining mods. My entry is stock.

It may not match all your rules to the point but I think it fits the spirit of the challenge. Here you are:

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