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Cake day: June 16th, 2023

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  • IFT3 was technically suborbital, but only barely. Like a couple hundred km/h short. Literally a couple of seconds longer second stage burn would have put it into a stable orbit. Or the same velocity just with a lower apogee. They intentionally left the perigee just inside the atmosphere so a deorbit burn was not required. This is also the plan for IFT4, iirc. I think they are talking about the bellyflop/suicide burn. It was not planned on IFT3, but is for IFT4.

    Both the booster and the ship have attitude control thrusters that you could see firing during the live stream of IFT3. Early prototypes used nitrogen cold-gas thrusters, but were planned to be upgraded to methane/oxygen hot-gas thrusters at some point. I don’t recall if/when they were.


  • the explosion, which took place at its Boca Chica Starbase facilities

    The raptor testing stand at McGregor experienced an anomaly

    Well, which is it? I’m going to trust NASASpaceflight over this article and go with it was a McGregor. No where near Starbase. And that means it will likely have no effect on IFT4 as this article says.

    edit: Adding to this, the author of this article has no idea what they are talking about.

    The Raptor engines that are currently undergoing testing are SpaceX’s Raptor 2 engines

    So clearly nothing to do with IFT4, as Ship 29 and Booster 11 are already outfitted with their engines, non of which are Raptor 2s.

    On its last flight test, IFT-3, Starship finally reached orbital velocity and it soared around Earth before crashing down into the Indian Ocean. On the next flight, SpaceX aims to perform a reentry burn, allowing Starship to perform a soft landing in the ocean.

    IFT3 burned up on reentry, maybe parts of it made it to the ocean, but it was not crashing into the ocean that was the problem. IFT4 does not plan on doing a reentry burn. No one does a reentry burn from orbit. Starship uses a heat shield like every other orbital space craft. They are planning to attempt a landing burn, that is probably what they are talking about.




  • rImITywR@lemmy.worldtoLinux@lemmy.mlConsidering Starting Linux
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    9 months ago

    You don’t even need any hardware to get started. Fire up a virtual machine in VirtualBox or VMWare or use WSL. Start playing around, find a distro/DE you like and start learning.

    After some time, look into dual booting your existing machine. You can try this in a virtual machine first before making any changes to you hardware.




  • There are, and always has been, waterproof devices with replaceable batteries. Phone manufacturers love that they can lie and say that a removable battery affects waterproofing. By making the battery hard to remove, and some other tricks, they make the phone less repairable. They then can convince consumers that they need to replace their phone every 18-24 months.

    The only reason to replace your phone every two years is that you want the new shiny. All other reasons are artificial, marketing garbage created by manufactures who profit off of creating e-waste.