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Everything posted by kerbiloid
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Nozzle Size Versus High Pressure And Scifi
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
In XXIV century they discovered that a 40 m wide nozzle is a game changer, because the flame turbulences merge into one huge spherical plasmoid. The huge, 30 m in diameter, ball of plasma gets thrown back and explodes, additionally pushing the rocket from back, like in the known archaic Orion project. To survive that, the nozzle has to be very thick (preferrably - forged) and attached to the ship via a double-cascade set of pistons. -
Sloped Ramps, Long Runways, and Heavy SSTO's
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
They are not nozzles, they are smoke pipes. Just they smoke with photon gas. They are calmly lighting, but don't produce thrust or damage anything behind. Monorail. We need a monorail. -
For Questions That Don't Merit Their Own Thread
kerbiloid replied to Skyler4856's topic in Science & Spaceflight
And here we come to the antimatter-powered water-boiler rocket, and the thread gets merged to the "AM Orion SSTO" megathread. -
Nozzle Size Versus High Pressure And Scifi
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
No. Because they can't be effectively cooled. -
The James Webb Space Telescope and stuff
kerbiloid replied to Streetwind's topic in Science & Spaceflight
Yes, in front of the camera.- 869 replies
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The James Webb Space Telescope and stuff
kerbiloid replied to Streetwind's topic in Science & Spaceflight
https://en.wikipedia.org/wiki/Kordylewski_cloud- 869 replies
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86 Average (8; 6) = 7 average up
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Nozzle Size Versus High Pressure And Scifi
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
Brick density ~= 2 500 kg/m3. One cubic meter of bricks per second. A pusher plate. A concave, nozzle-shaped, crypto-pusherplate. -
Even in Soviet planes, let alone the Western world of cash and profit. K-7 had two passenger versions: 128 in seats vs 64 in lux cabins. *** The planes with thick wings had them really thick, so they were walking inside the wings, and some rooms were exactly there. See the huge windows.
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The James Webb Space Telescope and stuff
kerbiloid replied to Streetwind's topic in Science & Spaceflight
Any L point is a gravitational junkyard. A proper place to place an overexpensive telescope.- 869 replies
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Sloped Ramps, Long Runways, and Heavy SSTO's
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
Like this. *** Makes sense only for helicopters, who can start either vertically (with normal cargo) or after runway running by wheels (when overloaded). -
Nozzle Size Versus High Pressure And Scifi
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
Their nozzle pressure will be absolutely same, because it's defined by the material strength limit of either nozzle or tank (if pressure-fed). Everything other is a bad engineering, because carries excessive mass. -
The James Webb Space Telescope and stuff
kerbiloid replied to Streetwind's topic in Science & Spaceflight
https://en.wikipedia.org/wiki/Hill_sphere#Solar_System Body Million km au Body radii Arcminutes[note 1] Furthest moon (au) Mercury 0.1753 0.0012 71.9 10.7 — Venus 1.0042 0.0067 165.9 31.8 — Earth 1.4714 0.0098 230.7 33.7 0.00257 Mars 0.9827 0.0066 289.3 14.9 0.00016 Jupiter 50.5736 0.3381 707.4 223.2 0.1662 Saturn 61.6340 0.4120 1022.7 147.8 0.1785 Uranus 66.7831 0.4464 2613.1 80.0 0.1366 Neptune 115.0307 0.7689 4644.6 87.9 0.3360 Ceres 0.2048 0.0014 433.0 1.7 — Pluto 5.9921 0.0401 5048.1 3.5 0.00043 Eris 8.1176 0.0543 6979.9 2.7 0.00025 Jupiter in the habitation zone of the Sun: Rhill = 50.5/ 5.2 ~10 mln km. Not much room for an Earth-like planet. In case of a dwarf star decrease this even more. Unlikely a habitable moon can be inside a habitable zone.- 869 replies
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Nozzle Size Versus High Pressure And Scifi
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
The Martian colonists could use the big nozzle as a dome for their habitat. -
Weno Kerman hasn't ever before drunk water instead of whiskey. Now he's deadly sober. Simplie Kerman. No fresh rumors for whole month.
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The James Webb Space Telescope and stuff
kerbiloid replied to Streetwind's topic in Science & Spaceflight
If send a cloud of autonomous telescopes to the 550 AU distance, every one of them can be photographing its dedicated spot in hi-res, and all and once they would be an ultra-large intereferometer array. We could watch the alien sitcoms. Finally, the astronomy would turn into something useful for everyone, not just a game for nerds.- 869 replies
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