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Cake day: October 6th, 2023

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  • Nobody would deny that the military can waste vast amounts of money, that has been proven time and time again. So on that point you have absolutely no argument from me!

    But buying a couple of cars is not hard, so if something about the contract for this purchase made the prices go up, the airforce could always just back out and have some Colonel use discretionary funds to purchase 2 new trucks outright for 80k each.

    But trust me, the airforce does like blowing stuff up, and they would rather spend 4 million on a single missile than a fleet of trucks.









  • It’s a fantastic idea, really clever. But I’m afraid it’s too late, it doesn’t have the necessary Delta-V. We could have tried it if we had planned the mission a month ago, but at this point we just can’t get there in time (We didn’t know its trajectory a month ago, so it’s a moot point). What it comes down to is this, to make a flyby it would need about 2.5k Delta V, Juno has about half that.

    Also, we’re not confident Juno’s engines will light. We’ve previously refrained from using them for some planned manners because we recorded abnormalities the last time they were fired. There’s a decent chance engines would explode if used again.

    If we want to be able to take advantage of this kind of situation in the future, we’ll need at least one of two things… More probes, just sitting around with more fuel to spare, or better detection abilities so we can find these objects with more time to get to them. I’m betting on the later approach.



  • Cocodapuf@lemmy.worldtoxkcd@lemmy.worldxkcd #3124: Grounded
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    8 days ago

    it seemed like between 7,000 and 8,000 the air is not suitable, but I figured the pilot wasn’t likely to be taking risks like that, so there must be some explanation

    Yeah, I mean the atmospheric pressure at altitude varies, it’s definitely not black and white. And it’s true, pressure does start to really drop off around 7000ft, but it’s just starting to drop significantly at that point, that just makes 7k a good ceiling.

    So yeah, this all seems pretty much consistent.



  • Cocodapuf@lemmy.worldtoxkcd@lemmy.worldxkcd #3124: Grounded
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    8 days ago

    7000 ft is relatively common for small planes like cessnas, they don’t even keep pressurized cabins, but It’s fine if you stay low. So there’s nothing wrong with that altitude, but it’s awfully low for a jet. The jet will be flying at low fuel efficiency the whole way and it certainly won’t have much wiggle room if something really goes wrong. (You can lose 7000 ft of altitude very quickly)