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I think I need to become far more informed about these matters as this is rather surprising to read. I’ve been watching Russia toddle about with their “second

I think I need to become far more informed about these matters as this is rather surprising to read. I’ve been watching Russia toddle about with their “second best in the world” equipment, demonstrating how difficult it can be. And now I’m reading that Houthi rebels have missiles that can make it outside some meaningful definition of “atmosphere”? Maybe I’m failing to understand how modern military rocketry works.

zarzavat 3y ago
It’s not as impressive as it sounds. Weather balloons go up pretty high too. Making a rocket go straight up into space and comes down again in a ballistic trajectory is relatively easy compared to making one that goes to orbit. This is the same kind of headline that Bezos was generating when he landed a rocket from “space” - up but not around.
- WesternWind 3y ago
  Weather Ballons can't go beyond the atmosphere because they utilize the differential in density between the atmosphere outside the balloon and the gas inside.
  - zarzavat 3y ago
    The point is to illustrate the difference between going up and down, vs going into orbit (going sideways). Weather balloons go up many kilometers but they don’t go into orbit. They just go up and down. A ballistic missile, sounding rocket, or bezos pod does the same thing with a little more oomph. Making a rocket that only goes up 100km into space and then falls immediately down again is hardly brain surgery.
The_Colonel 3y ago
Houthis are Iranian proxy, so they likely got Iranian missiles (among other weapons).
- genieyclo 3y ago
  AnsarAllah are allies of Iran, not proxies. They make decisions on their own and are the natives of North Yemen, organizing politically for decades now.
  - The_Colonel 3y ago
    I think there's no clear split between "proxy" and "ally". I agree that they make their own decisions, but from the POV of Iran they're rather proxy against the Saudis.
    - deleted 3y ago
      [deleted]
r2_pilot 3y ago
A sounding rocket basically the dimensions of a telephone pole can exit the Earth's atmosphere, going straight up(and coming straight down). It's getting enough sideways speed for orbit that requires all the extra fuel.
brap 3y ago
Few things to consider: 1. The rockets and drones are supplied to Yemen by Iran. Which also supplies rockets and drones to Russia. 2. Russia wasn’t really what it was claiming to be, and it certainly isn’t anymore. 3. Russia is (in theory) fighting against the Ukranian military, so they need precision. Yemen doesn’t care about that, they just want to bomb Israeli cities. Cheap is fine. 4. The magnitude of the conflict is vastly different. Ukraine is about x40 the size of Israel, and this war has been going on for x20 the duration.
- AnimalMuppet 3y ago
  Re 1: Supplied? I thought that Iran was supplying a huge dose of technical assistance, but not actual missiles because of blockade/interdiction issues.
  - xenospn 3y ago
    I doubt Yemeni rebels are able to source and build ICBMs. They most likely get the missiles ready for launch.
    - aaomidi 3y ago
      The “rebels” are effectively the state of Yemen.
      - xenospn 3y ago
        Same sentiment still holds.
    - dragonwriter 3y ago
      They are MRBMs, not ICBMs.
- wolverine876 3y ago
  > they need precision. Yemen doesn’t care about that, they just want to bomb Israeli cities. Wouldn't reliably hitting a city from that distance require precision? I think the Houthi forces just want to look like they are doing something. No matter what, they are not going affect the war.
ThrowawayR2 3y ago
A little poking around says that the missile used was https://en.wikipedia.org/wiki/Ghadr-110 https://en.wikipedia.org/wiki/Ghadr-110 and the Wikipedia entry has even been updated with a one-sentence mention of this interception.
deleted 3y ago
[deleted]
ahazred8ta 3y ago
The Houthi are using Scud-type missiles supplied by Iran that normally reach an altitude of 160km / 100 miles. https://www.indianpolitics.co.in/wp-content/uploads/2020/01/IMG_20200120_102012-568x420.jpg https://www.indianpolitics.co.in/wp-content/uploads/2020/01/...
- wolverine876 3y ago
  FWIW, the edge of space is usually, somewhat arbitrarily defined as the Karman line, 100 km / 62.1 mi.
  - rasz 3y ago
    Not if you are Virgin Galactic its not :)
bewaretheirs 3y ago
Getting to space (above the Karman line at ~100km altitude) is one thing; staying there is another. There is a short accessible summary of the difference between "in space" and "in orbit" at https://what-if.xkcd.com/58/ https://what-if.xkcd.com/58/
wolverine876 3y ago
I think people's still imagine the technology's availability as it was 40 years ago. * Launch sites: https://space.skyrocket.de/directories/launchsites.htm https://space.skyrocket.de/directories/launchsites.htm * Satellites by country (I expect most didn't launch their own) https://space.skyrocket.de/directories/sat_c.htm https://space.skyrocket.de/directories/sat_c.htm (Perhaps someone knows a list of countries with launch ability.)

zarzavat 3y ago

It’s not as impressive as it sounds. Weather balloons go up pretty high too. Making a rocket go straight up into space and comes down again in a ballistic trajectory is relatively easy compared to making one that goes to orbit. This is the same kind of headline that Bezos was generating when he landed a rocket from “space” - up but not around.

WesternWind 3y ago
Weather Ballons can't go beyond the atmosphere because they utilize the differential in density between the atmosphere outside the balloon and the gas inside.
- zarzavat 3y ago
  The point is to illustrate the difference between going up and down, vs going into orbit (going sideways). Weather balloons go up many kilometers but they don’t go into orbit. They just go up and down. A ballistic missile, sounding rocket, or bezos pod does the same thing with a little more oomph. Making a rocket that only goes up 100km into space and then falls immediately down again is hardly brain surgery.

The_Colonel 3y ago

Houthis are Iranian proxy, so they likely got Iranian missiles (among other weapons).

genieyclo 3y ago
AnsarAllah are allies of Iran, not proxies. They make decisions on their own and are the natives of North Yemen, organizing politically for decades now.
- The_Colonel 3y ago
  I think there's no clear split between "proxy" and "ally". I agree that they make their own decisions, but from the POV of Iran they're rather proxy against the Saudis.
  - deleted 3y ago
    [deleted]

r2_pilot 3y ago

A sounding rocket basically the dimensions of a telephone pole can exit the Earth's atmosphere, going straight up(and coming straight down). It's getting enough sideways speed for orbit that requires all the extra fuel.

brap 3y ago

Few things to consider: 1. The rockets and drones are supplied to Yemen by Iran. Which also supplies rockets and drones to Russia. 2. Russia wasn’t really what it was claiming to be, and it certainly isn’t anymore. 3. Russia is (in theory) fighting against the Ukranian military, so they need precision. Yemen doesn’t care about that, they just want to bomb Israeli cities. Cheap is fine. 4. The magnitude of the conflict is vastly different. Ukraine is about x40 the size of Israel, and this war has been going on for x20 the duration.

AnimalMuppet 3y ago
Re 1: Supplied? I thought that Iran was supplying a huge dose of technical assistance, but not actual missiles because of blockade/interdiction issues.
- xenospn 3y ago
  I doubt Yemeni rebels are able to source and build ICBMs. They most likely get the missiles ready for launch.
  - aaomidi 3y ago
    The “rebels” are effectively the state of Yemen.
    - xenospn 3y ago
      Same sentiment still holds.
  - dragonwriter 3y ago
    They are MRBMs, not ICBMs.
wolverine876 3y ago
> they need precision. Yemen doesn’t care about that, they just want to bomb Israeli cities. Wouldn't reliably hitting a city from that distance require precision? I think the Houthi forces just want to look like they are doing something. No matter what, they are not going affect the war.

ThrowawayR2 3y ago

A little poking around says that the missile used was https://en.wikipedia.org/wiki/Ghadr-110 https://en.wikipedia.org/wiki/Ghadr-110 and the Wikipedia entry has even been updated with a one-sentence mention of this interception.

deleted 3y ago

[deleted]

ahazred8ta 3y ago

The Houthi are using Scud-type missiles supplied by Iran that normally reach an altitude of 160km / 100 miles. https://www.indianpolitics.co.in/wp-content/uploads/2020/01/IMG_20200120_102012-568x420.jpg https://www.indianpolitics.co.in/wp-content/uploads/2020/01/...

wolverine876 3y ago
FWIW, the edge of space is usually, somewhat arbitrarily defined as the Karman line, 100 km / 62.1 mi.
- rasz 3y ago
  Not if you are Virgin Galactic its not :)

bewaretheirs 3y ago

Getting to space (above the Karman line at ~100km altitude) is one thing; staying there is another. There is a short accessible summary of the difference between "in space" and "in orbit" at https://what-if.xkcd.com/58/ https://what-if.xkcd.com/58/

wolverine876 3y ago

I think people's still imagine the technology's availability as it was 40 years ago. * Launch sites: https://space.skyrocket.de/directories/launchsites.htm https://space.skyrocket.de/directories/launchsites.htm * Satellites by country (I expect most didn't launch their own) https://space.skyrocket.de/directories/sat_c.htm https://space.skyrocket.de/directories/sat_c.htm (Perhaps someone knows a list of countries with launch ability.)