[WiP] [1.3] STS - AVALON

[RaendyLeBeau]

dear all,

many thanks to @Nansuchao   !! 

so now the heatshield re-entry look very stable. here few pictures

http://imgur.com/gallery/LGl7q

 

Spoiler

 

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Edited November 19, 2016 by RaendyLeBeau

[RaendyLeBeau]

dear all,

so just finished assembling in Unity the SRB for the AVALON Interstage.

here a cinematic preview.  - enjoy, cheers

 

 

[RaendyLeBeau]

hello all,  after the first project sketches I created the heavy-lifter stage (code name 'ARTUS') with blender. Hope this ding also goes up stably. - so without FS-extender you get this stage NOT in the VAB. in.

Well, as it will turn out to be in the next days. At least I have not yet found a suitable transporter stage would be cool it would work.

http://imgur.com/a/As1Kf

http://imgur.com/a/6VUQl

here few pictures

total height ca.95m  - comparison with mk1-2

 

 

Edited November 23, 2016 by RaendyLeBeau

[RaendyLeBeau]

hi all,

Here are a few pictures during the development phase of the new lateral SRB and decoupler for the XL Heavy Lifter Stage .. Hope you have fun

http://imgur.com/gallery/ao4Ly

 

XL SRB - stabilizing aereo fins on top

 

Edited November 24, 2016 by RaendyLeBeau

[RaendyLeBeau]

Here is a *concept preview Heavy Lifter Stage (s1) coupling mechanism with subsequent stage2

 

* Unity preview but no test yet .. honestly no idea whether it behaves as expected    In the beginning concept it was a mech. Decoupler with 4 gripper tweezers. But no idea how to realize alone with belnder + unity. - think is not possible. Therefore a simple giant decoupler.
This concept is however difficult because of the implementation with collider ..

iam estimated that the stage above can not be detached.   - Let's see what the next test flights for results will bring.

 

you can see more here

http://imgur.com/gallery/BtTA5

 

 

 

Edited November 25, 2016 by RaendyLeBeau

[RaendyLeBeau]

dear all,

After several starts I could build a stable stage connection adapter. Is a little poodley, but on the whole, his work is good. The route to LKO / LEO is very stable and balanced.
The concept is now ready for flight. Much work is still in the configuration fine-tuning and not to forget 95% is not yet graphically texturiert.

here as usual - last clip from 'testflight-series'

 

Edited November 26, 2016 by RaendyLeBeau

[RaendyLeBeau]

dear all, so just finished assembling the whole STS.

Of course, there are again some small errors. Now there is a lot to do.

The 1 Stage (ARTUS) has a lot of power and can handle the freight of stage 2-3. - the stage adapter works well, but could be improved.

http://imgur.com/gallery/cuuhV

Here still as usual - testflight -series clip - this time a walk through the STS .. is really a huge thing!

cheers

 

Edited November 26, 2016 by RaendyLeBeau

[RaendyLeBeau]

how decoupling the Stage Adapter  ?  here is the answer 

 

 

[RaendyLeBeau]

hi all, so i designed a possible new Habitat Cupola module (created as addon unit - without attached upperstage)

- Think would be useful as core modules for the construction of a larger space station in LEO

http://imgur.com/a/wegBP

here first concepts

 

 

 

Edited November 29, 2016 by RaendyLeBeau

[RaendyLeBeau]

Here is a preview of the IVA structure of the SS-Avalon - as it is now planned, 20 kerbals can fly with them. Of course it would have had more space if the fuel tanks were not considered.

I thought it was more exciting just to consider this as if it had been realistic.

 

here full album of IVA  concept :  https://i.imgur.com/a/qXgIT

 

 

 

 

 

 

 

 

 

Edited November 29, 2016 by RaendyLeBeau

[mechanicH]

Holy crap  That is HUGE,  I LOVE IT. 

[Kertech]

Those are beautiful!! Cannae wait

[RaendyLeBeau]

Dear children, punctually for Christmas, santa claus brings us a present. 

i hope you enjoy it

 

Cheers  all & have a good Christmas! 

raendy

 

Edited December 21, 2016 by RaendyLeBeau

[RaendyLeBeau]

hi all, I'm currently reading the good article by frizzfrank

- is not an easy read - I hope I can create it own launchClamp

solved !

Edited December 29, 2016 by RaendyLeBeau
-corrctur

[RaendyLeBeau]

Had completely failed  

Holy sh..t, after so many try I give it up. I would have imagined the whole topic easier. In addition, the animations do not work - I have been working since ksp1.2 with Unity version5.   ...  really tiring 

 

 

 

 

 

Edited December 29, 2016 by RaendyLeBeau
Had completely failed to make launch clamp

[Nansuchao]

@RaendyLeBeau have you tried to contact NecroBones? Probably him or RoverDude can help you.

[RaendyLeBeau]

5 hours ago, Nansuchao said:

@RaendyLeBeau have you tried to contact NecroBones? Probably him or RoverDude can help you.

thanks my friend.

In the meantime, I once again started a trial - and now realized what the points are to be observed.
- yes took me a while and took me 3 beer tasted ..

Here a first prototype.

- it is important to understand the context and structure of the following three components:

MODULE
{
    name = LaunchClamp
    
    trf_towerPivot_name = CapRoot
    
    trf_towerStretch_name = TowerStrech_Root
    
    trf_anchor_name = AnchorRoot
    
    trf_animationRoot_name = ClampRoot
    
    anim_decouple_name = PLC03Clip
    
}

@NecroBones  thnx for his tutorial - its helps me very much.

 

 

 

 

 

 

 

 

 

[RaendyLeBeau]

hi all, here as usual a clip -cheers

 

 

Edited December 26, 2016 by RaendyLeBeau
launch clamp prototype - clip

[RaendyLeBeau]

After some instructive experiments with the topic 'launch-clamp' I am finished tonight with the first really "fat" Lauch-clamp part!

In short, it is massive-huge, large and sufficiently stable to let the "Duna-direct Taxi" STS AVALON start in any weather!

Proud - it is here the "ALC20-59"!
 

http://imgur.com/gallery/CZHWo

By the way if someone is interested in the name:
The ALC20-59 has been designed for the first stage of AVALON.
"A" stands for Avalon "LC" for launch Clamp, "20" stands for RacketDameter "-59" stands for the LBSI launch Clamps.
such as. LC-05 - the smaller brother of ALC20-59.

 

 

 

 

@Nansuchao  - Github update with finished parts will follow as soon as possible! 

 

Edited December 28, 2016 by RaendyLeBeau

[RaendyLeBeau]

here as usual for conclusion  - Yes ! that was fun ! 

 

 

Edited December 28, 2016 by RaendyLeBeau

[Puggonaut]

Subbed , love using the Rocket Factory Mod , this one looks even more epic .

[RaendyLeBeau]

10 hours ago, Puggonaut said:

Subbed , love using the Rocket Factory Mod , this one looks even more epic .

I hope I have time to create Rocket-Factory 2 - but only after AVALON 

 

 

[RaendyLeBeau]

Yesterday I created realistic calculations regarding volume and mass of the Avalon STS. While I was quite amazed.

All components including engines must undergo a thorough check. Here a few calculations:

To put it briefly: the whole STS became much heavier ! she has gained weight over Christmas

 

Spoiler

 

-

**************************************************************************************************
 Fueltank charging calculation for : "Heavy-Lifter FuelTank_ARTUS"  - Stage 1
**************************************************************************************************
............................................................................     
general short overview:

Everything in Kerbal Space Program uses the Metric system
Distances are measured in (kilo)metres

Masses are measured in metric tons (this applies to both parts and fuels).
-    Xenon Gas is measured as mass per unit not volume: 0.1 kg per unit
-    All other gasses are 5kg per unit
    
Volumes (for all other liquid fuel, oxidizer, monopropellant, solid fuel etc)
are measured as 2-2.5 litres per unit. (*)

1 unit of liquid fuel weighs exactly 5 kg. Oxidizer weighs the same as liquid fuel.
see fuel, oxidizer, etc. densities in /KSP/GameData/Squad/Resources/ResourcesGeneric.cfg
............................................................................

used calculation tools ( The blender calculation tools I find not suitable (3d print volume calc.)

**********************************************************************    
https://www.crownoilenvironmental.co.uk/tank-size-calculator

http://www.handymath.com/cgi-bin/cylinder.cgi

**********************************************************************    

Stage 1 Dimension :

vertical cylindrical tank dimensions: 21m diameter x 80m height
Measurement units (mm)
Diameter         21000
Length            80000
Liquid Height   21000 (level of Fueltank payload)

---------------------------------------------------------------------------

Results
Measurement     Tank Capacity     Tank Contents

Litres               27708847.2L          27708847.2L
m3                   27708.85m3           27708.85m3
Gallons (UK)    6095087.41 gal      6095087.41 gal
Gallons (US)    7319901.58 gal      7319901.58 gal
Barrels            174283.38 barrels  174283.38 barrels
ft3                   978529.63ft3           978529.63ft3

---------------------------------------------------------------------------

from :  http://wiki.kerbalspaceprogram.com/wiki/Fuel_tank

"In the part configuration the dry mass is given and the resources are given in a volumetric unit.
To calculate the mass of the fuel and the mass fully fueled, wet mass, the density is also required.
In general the mass of one type of fuel is:

mFUEL = vFuel * pFuel  
mFUEL = 27708.85m³ * 0.005
mFUEL = 138.54425 ??

[mFUEL] is the mass of the fuel
[vFuel] is the volume of the fuel
[pFuel] is the density of the fuel

Because all stock tanks, except the liquid fuel and oxidizer tanks, use only one
type of fuel the sum of the different fuels in the tank is not required.
And because the liquid fuel and oxidizer have the same density, the volumes can be added before converted into mass.

[mFuel-lf/ox] = ([Vlf] + [Vox]) * [plf/ox] = ([Vlf] + [Vox]) * 0.005 Tonns/Unit

[mwet-lf/ox] = [mdry] + [mFuel-lf/ox] = [mdry] + ([Vlf] + [Vox]) * 0.005 Tonns/Unit

[mFuel-lf/ox]    is the fuel mass of the liquid fuel/oxidizer mixture
[mwet-lf/ox]    is the wet mass of a tank with liquid fuel/oxidizer mixture
[mdry]            is the dry mass
[Vlf] and [Vox]    are the volume of liquid fuel and oxidizer
[plf/ox]        is the density of liquid fuel and oxidizer (they are the same)

--------------

The Rockomax X200-16 Fuel Tank for example:
Based on some rough in-game measurements it is approximately 0.67·1.25 meters tall with a radius of 1·1.25 meters
(1.25 is the rescale factor!).

This would give the tank/stage a real world volume of around 4110.9 liters (4.1109 m³).
Dividing the tank's actual in-game fuel capacity (720 unit + 880 unit = 1600 unit) with this volume,
the result is 389.2 unit/m³.  (389.2 * 4.1109m³=16000)

 

-> in KSP we spend 389.2 unit/m³ !  (liquid fuel and oxidizer have the same density 0.005)

calculation :
-> 27708.85m³ * 389.2 = 10784284.42 unit  (total on whole 'Artus'S1 Tank)

If we count with 0.8 ratio for volumetric usage efficiency (real life example: 80% for the Saturn V's stages),
then 1 unit = 2.0555 liters. (*)

The reason the entire volume is not used is because the actual fuel tank is a pressure vessel with rounded
ends inside the cylindrical stage. The tanks itself are also insulated to keep the cryogenic fuels from
boiling away to quickly. As the tanks of the liquid fuels and solid fuels has better volumetric usage
efficiency, we can estimate the volume of 1 unit is about 2-2.5 liters.

**********************************************************************    
total kerbal unit ammount 10784284.42

10'784284.42 * 0.8 (volumetric usage efficiency 80%) = 8'627427.536
      
roughly Round off to : 8'500'000.0  in game kerbal unit for  "Heavy-Lifter FuelTank_ARTUS"  - Stage 1
 

-

 

 

 

-

Spoiler

 

**************************************************************************************************
 Fueltank charging calculation for : LBSI_Avalon-TransferStage-Fueltank
**************************************************************************************************

Calculation mass relation:    
vertical cylindrical tank dimensions: 9m x 23.5m
Measurement units (mm)
Diameter            9.0 m  
Length               23.5m  
Liquid Height     23.5m

Measurement     Tank Capacity     Tank Contents
Litres                 1495005.4L     1495005.4L
m3                     1495.01m3     1495.01m3
Gallons (UK)     328854.84 gal     328854.84 gal
Gallons (US)     394938.57 gal     394938.57 gal
Barrels              9403.3 barrels     9403.3 barrels
ft3                     52795.67ft3     52795.67ft3

-> in KSP we spend 389.2 unit/m³ !  (liquid fuel and oxidizer have the same density 0.005)
-> 1495.01 m³ * 389.2 = 581857.89 unit

total kerbal ammount = 581857.89 unit
 
If we count with 0.8 ratio for volumetric usage efficiency (real life example: 80% for the Saturn V's stages),
then 1 unit = 2.0555 liters. (*)
581857.89 * 0.8 (volumetric usage efficiency 80%) = 465486.31 Unit

-> total kerbal fuel unit ammount = 465486.31 Unit for "AVALON TransferStage Fuel Tank" in game

 

When calculating the mass of an empty stage1 fuel tank, I had to make corrections to get an approximate estimate.
I took the numbers of Saturn I and Saturn V and put them into the larger relation of AVALON Stage 1 (Artus).

This looks something like this:
 

Spoiler

 

*********************************************************************************************    
 empty FuelTank mass calculation for : "Heavy-LIFTER_FuelTank_ARTUS"
*********************************************************************************************    
* based on a relation-comparition calculation [Rmf]

source 1 : https://en.wikipedia.org/wiki/Saturn_I

Data for the Saturn I

Parameter         S-I – 1st Stage     S-IV – 2nd Stage     S-V – 3rd Stage
Height (m)         24.48                     12.19                 9.14
Diameter (m)     6.52                     5.49                 3.05
Empty mass (kg) 45,267                     5,217                 1,996

Gross mass (kg) 432,681     50,576     15,600
Engines         Eight – H-1     Six – RL10     Two – RL10
Thrust (kN)     7,582     400     133
ISP (seconds)     288     410     425
ISP (kN·s/kg)     2.82     4.02     4.17
Burn duration (s)     150     482     430
Propellant         LOX/RP-1     LOX/LH2     LOX/LH2

Calculation #1  :
-----------------
Artus Height ca.80m x 21m
80/24.48 = Height relation multiplicator factor [Hmf]
[Hmf] = 3.268
21/6.25  = Diameter relation multiplicator factor [Dmf]
[Dmf] = 3.221

[Rmf] relation multiplicator factor = [Hmf] + [Dmf] / 2
[Rmf] = 3.244

Artus Tank dry mass Kg = [Rmf] * Empty mass (kg) 45,267 S-I

Artus Tank dry mass Kg = 146865.588 Kg
 
------------------------------------------------------------------------

------------------------------------------------------------------------

source: https://en.wikipedia.org/wiki/Saturn_V

First Stage SATURN V  - S-IC  

Length         138.0 ft     (42.1 m)
Diameter     33.0 ft     (10.1 m)

Empty mass     287,000 lb     (130,000 kg)

Gross mass     5,040,000 lb(2,290,000 kg)
Engines     5 x Rocketdyne F-1 (5x )
Thrust     7,891,000 lbf (35,100 kN) sea level
Specific impulse     263 seconds (2.58 km/s) sea level
Burn time     165 seconds
Fuel     RP-1/LOX
------------------------------------------------------------------------

Calculation #2  :
-----------------
Artus Height ca.80m x 21m
80/42.1 = Height relation multiplicator factor [Hmf]
[Hmf] = 1.9
21/10.1  = Diameter relation multiplicator factor [Dmf]
[Dmf] = 2.079

[Rmf] relation multiplicator factor = [Hmf] + [Dmf] / 2
[Rmf] = 1.99

Artus Tank dry mass Kg = [Rmf] * Empty mass     130,000 kg S-V

Artus Tank dry mass Kg = 258700 Kg

**********************************************************************    

------------------------------------------------------------------------    
    RESULTS for S1 Avalon
    [Rmf] dry mass in relation to Saturn_I = 146865.588 Kg
    mass =   140'000.0
    round off

    // in game mass in tonns raw
    mass =       140.0
------------------------------------------------------------------------    
**********************************************************************   

Science innovation factor - today Space engineers no longer uses the same materials as 60 years ago.* 

Today Efficiency and weight in Space Engineering were significantly reduced. ( see SpaceX Carbon-Fiber tank)

[ * as example see here https://www.quora.com/How-did-SpaceX-make-their-12-meter-carbon-fiber-fuel-tank - SpaceX make their 12 meter carbon fiber fuel tank. ]

In this regard, I calculate with a factor 0.6 - 0.8 multiplied by the result.

  // in game mass with innovatin factor in tonns x 0.8
  mass =      112.0

 

  

 

Until now I have more concerned with the functionality and design of the AVALON-STS .
Now according to the last calculations, I have a more realtime insight into the whole STS construction.

 

 

Edited December 30, 2016 by RaendyLeBeau

[RaendyLeBeau]

In the calculation of the force of the E1 I have also worked with relation to other popular Stage 1 Engines . I have considered several factors.
Since I have not yet come to a conclusion are the calculations not yet finished,

here are some outer Dimension comparisons with other popular Stage1 Engines like F-1

http://imgur.com/a/bwUvd

 

 

source :  https://en.wikipedia.org/wiki/Rocket_engine

Jet or rocket engine	Mass (kg)	Mass (lb)	Thrust (kN)	Thrust (lbf)	Thrust-to-weight ratio
RD-0410 nuclear rocket engine[9][10]	2,000	4,400	35.2	7,900	1.8
J58 jet engine (SR-71 Blackbird)[11][12]	2,722	6,001	150	34,000	5.2
Rolls-Royce/Snecma Olympus 593 turbojet with reheat (Concorde)[13]	3,175	7,000	169.2	38,000	5.4
Pratt & Whitney F119[14]	1,800	3,900	91	20,500	7.95
RD-0750 rocket engine, three-propellant mode[15]	4,621	10,188	1,413	318,000	31.2
RD-0146 rocket engine[16]	260	570	98	22,000	38.4
SSME rocket engine (Space Shuttle)[17]	3,177	7,004	2,278	512,000	73.1
RD-180 rocket engine[18]	5,393	11,890	4,152	933,000	78.5
RD-170 rocket engine	9,750	21,500	7,887	1,773,000	82.5
F-1 (Saturn V first stage)[19]	8,391	18,499	7,740.5	1,740,100	94.1
NK-33 rocket engine[20]	1,222	2,694	1,638	368,000	136.7
Merlin 1D rocket engine, full-thrust version [21]	467	1,030	825	185,000	180.1

 

 

 

 

 

 

Edited December 31, 2016 by RaendyLeBeau

[RaendyLeBeau]

A current status of work with technical details of the most important parts such as Engines, fuel tanks and features :

full album : http://imgur.com/gallery/wO1Ur

 

 

Edited December 30, 2016 by RaendyLeBeau