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gilflo

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Posts posted by gilflo

  1. Hi all RO workers !

    Would it be possible to get a kind of procedural shield on procedural parts, tanks and cockpits, something like you did for tank insulation when you need to protect against boiling? 

    Use a slider to trade re-entry temperature protection against weight on main pieces of a lander ? maybe a light change in "visual" when using thermal protection ?

    In that way we could use the pieces of the game to build a Starship able to re-enter without the standard shield at the back

  2. Hello guys, I have seen a lot of complicated google sheets about RO engines. I create mine to compare engine in the following ways so that I could design Huge launchers to send 50 Tons to 150 tons in low Moon Orbit:

    -Thrust ASL and VAC given by 1kg of each engine

    -What is the Total Mass of propellant drained in kg/s for 1 Ton of each engine

    -What the Total Mass of Propellant drained in kg/s for 1 Ton of Thrust ASL/VAC given by each Engine

    -Engine datas: Name and config, Engine Weight, HR and ISP ASL and VAC, Number of Ignitions, Type of propellant, Gimball or not, Pressure Feed Tank or not, minimum Throttle possible, 

    The purpose is to optimise the weight of my launchers

    Feel free to complete

    https://docs.google.com/spreadsheets/d/1r_ZUX34zdgkpzcFAR7MOAD9QsSyyTCxeQ03Z5vtOVoY/edit?usp=sharing

     

     

  3. Hello all, I am playing Realism Overhaul KSP 1.12.3, using MechJeb2 for my rocket ascent. I built quite a Huge rocket - 2 Stages LqH/LqO - to set in orbit 400 kms my 225T charge.

    I never succeed the ascent using PVG method, even after reading all about PVG ascent here: https://github.com/KSP-RO/RP-1/wiki/TroubleshootingMechJebPVG

    I tried many classic ascent methods and send my charge in orbit with only 7527 DV Atm 9133 DV VAC with insertion behind Periapsis.

    Here are the parameters:

    Stage 1: 6 engines M1U-SL   3502 DV Atm 4208DV VAC TWR SLT 1.50

    Stage 2 3 engines CobraH   4025 DV Atm 4925 DV VAC TWR 1.38

                          TTL DV         7527 DV Atmo   9133 DV VAC

    Charge: Lunar station + Injector  225T (Engine AR 22)

    TOW:  Launcher + charge 2615T Height 182m Diameter 9m Engines Base 10m

     

    Orbit 400 kms  Gravity turn begins at 100m/s, Turn shape 37,5% -End turn 150kms at -4°

    I do not understand why PVG can't perform this launch: I need more DV and it ends with more than 1000 kms apoapsis and low periapsis. I know it depends hardly on rocket parameters, but my rocket seems quite "standard" !

  4. Hello all, i have noticed something weird when using RO engines, family LE-5.

    When using throttable engines, LE-5A to LE-5B-3, i noticed that when you throttle up from minimum Throttle, the engine rpm jump from minimum to 74%, then you can use rpm between 74% and 100%. There’s no possible rpm use between 74% and minimum which is 5% for LE-5A and 3% for other engines, so engines are throttable from 74% to 100%, then you must jump directly to 3 or 5%: Is it a normal use? It is not that it looks like when reading engines datas

  5. Hi guys, I launched myself this Challenge

    Create a remote Comment around Earth with 3 probes to control probes to the Moon

    Create a superHeavy Launcher, 2 stages 1st LFO (Re -usable stage) from Earth to 60 kms, then LH2O to low orbit 200-250 kms

    Here is the test:

    https://youtu.be/xkE_TTSKdFI

    Diameter 8m50 to launch an Orbital LunarGateway able to join a 100 kms  Moon Polar Orbit: 5 launches with 1 central Core, with Lab, and habitats and 4 cryogenic tanks to dock on the central core

    Spoiler

    nX34WJt.jpg

    Create a Starship, diameter 8m50, Height 50m, able to join the LunarGateway from Earth Low orbit and launch it with the superHeavy launcher

    Spoiler

    lJ7u2c5.jpg

    Spoiler

    GtJvSzP.jpg

    Starship: 12 passengers + 1 exploration Rover and ability to survive launch crash in atmosphere. Payload to Moon from Lunar Gateway: More than 25T

    Mission of Starship: Land the rover that will search a site to build a MoonBase

     

    Create 3 modular moonBase elements to launch and dock to Lunar Gateway. The Starship will deliver them 1 by 1 to be assembled on moon

    Spoiler

    azlZxzr.jpg

    Spoiler

    TPWxNYe.jpg

    Create and launch to lunar gateway a moon driller, able to drill, then move and refuel the Starship in order to fill the LunarGateway tanks

    Spoiler

    m4LcO8W.jpg

    Create and launch an SSTO Shuttle to lunar gateway for crew rotation

    Spoiler

    GlocEXe.jpg

    Create a shuttle to stay near MoonBase for emergency evacuation

  6. The fact is that if you don't act in a certain way, after tweak scale, one of your symmetrical fuel tank will get the right fuel according to tweak scale, and the other tank will get the initial fuel, the before you tweak scale.

    To avoid it, select your fuel tank, put your symetrical tank not tweak scaled, select your fuel, you'll get the original quantity with a normal tank, then tweak scale one tank, and the other tank will be tweak scaled too with the right quantity in each fuel tank. If you want to proceed with another similar tweak scaled tank in symmetry, don't take from the previous tweakscaled tank using option key, but select another original tank, put it in symmetry, then select fuel options, and tweakscale again, and so on....This is the only way to get symmetrical fuel in tweakscaled tank

  7. I launched 5 probes together on a 17000kms orbit to Jool (Image 1) . I separated  a probe with an LFO tank 90/1000. (image 2). On KER I read more 4000DV  and I get them! The same probe in the VAB: Mechjeb and Ker give 1938 VAC DV around Cool (image 3) . I teleport this probe with Kerbaltek on the same Jool orbit -17000 kms- and I got the 1938 DV expected (image 4)

    https://imgur.com/IZ1TiFj

    https://imgur.com/md0YAJB

    https://imgur.com/GAHwkOM

    https://imgur.com/odyyC8Z

     

  8. Well guys, thank you for all your answers. in fact you're right! too many Rapiers

    I just work on a new plane which is a TSTM: Two Stages To Run, The first stage is an atmospheric stage that feed the 3 Rapiers, Then when I switch to closed cycle, the atmospheric stage is decouple and one in orbit I got 2700-2800 DV left with the Space Plane, much more lighter an much more endurance!

    But I am working on a version with 2 Terriers giving same DV once in orbit and only 21T at take off. The atmospheric stage is 2 Rapiers with 200 kg of LF

     

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