Reactordrone
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Posts posted by Reactordrone
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4 hours ago, Racescort666 said:
Atlas V's fairing is 12.2 m to the start of the ogive vs the Falcon 9's 6.7 m...
Yeah but the Atlas fairing has the entire upper stage inside it.
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Loose line hanging off Dragon but a successful capture.
https://www.24live.co/live/Un9tb
ETA-Appears to be a small umbilical cable that didn't detach cleanly at launch and got dragged up to orbit.
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1 hour ago, mikegarrison said:
IIRC, the experiment racks are located in a separate compartment from the passengers.
I don't know if they envision people buying whole launches for running interactive experiments, but I would guess they would be OK with that if they had launch slots available.
Edit: I was only partly correct.
https://www.blueorigin.com/new-shepard/new-shepard-payloads/
They do offer standardized racks for payload in the cabin and also payload exposed to the ambient (lack of) atmosphere.
You'd think people bouncing off the walls would mess up any zero g experiment that's attached to the vehicle.
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Eta Carina. Canon 500D with 250mm lens on Meade LXD55 mount. Seven, 3min subs stacked.
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Looks like all the proposals had a separate ascent stage. They were massive vehicles so staging would be very beneficial.
http://www.astronautix.com/a/apollolunarlanding.html
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The US and Russian sections are joined with an APAS-95 docking system (androgynous peripheral attachment system) which was derived from the APAS-89 used for shuttle/Mir . That used to be the standard docking system on the pressurised mating adapters which the shuttle used for docking but they are being progressively changed over to the new (but similar) NDS/IDS docking system.
If you look at the PMAs they have a common berthing attachment at the back where they attach to the station and the docking system at the front for US crew capsules to dock with.
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Had a daylight lunar transit by the ISS today which I've never tried before.
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On 3/20/2019 at 2:31 AM, tater said:
Now I'm thinking about their stupid naming scheme.
New Shepard? OK, makes sense, a suborbital rocket to carry PEOPLE, since Alan Shepard was a person.
New Glenn? Makes no sense unless it carries humans to orbit, IMO. New Armstrong? Same, but needs to carry humans to the lunar surface (else call it New Borman).
New Lindbergh? It needs to carry humans across an ocean through the air (or mostly through the air).
But it's Lindbergh so it's only got to carry one person transatlantic.
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Coverage is back up. About 5 minutes until separation of the trunk.
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10 hours ago, Xd the great said:
I was actually expecting the booster to be less roasted since DM1 was light.
It's mostly soot from the engines so it doesn't change much.
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The Moon passing by Venus 3-3-19
And a little Earthshine the same morning,
And the Moon near Saturn the previous morning,
Composite image to allow correct exposure of Saturn.
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58 minutes ago, MaxwellsDemon said:
Yeah, I wondered about that. Come to think of it, how did they recover that footage anyway, whichever machine it was on? Was there a "hardened" film capsule?
Ejectable camera pods. If you watch the staging footage to the end you can see the cameras capture the moment of ejection just before they shut off.
https://www.youtube.com/watch?v=HTGk3UM-IOU
A few images of the pods here, https://www.pistonheads.com/gassing/topic.asp?h=0&f=219&t=1576721
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3 hours ago, Green Baron said:
A few days ago i participated in a guided tour around the observatory here.
Before i thought that dark- and bias frame subtraction was mainly an amateur thing, because of the lower quality sensors and electronics. Wrong. The professionals do the same thing. Biggest difference, especially for infrared imaging, is the sensor temperature and shielding, e.g. from thermal radiation from the housing/cupola. While an amateur sensor can be cooled to -20 to -40°C below ambient, they cool their sensors down to ~70K (~ -200°C). Liquid Helium is a cost factor ...
Brrrrr ... sniff :-)
The neighbours might complain if you have a pulse tube cryocooler running overnight.
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6 hours ago, FloppyRocket said:
So probably it must be retrograde with respect to Dres' orbital motion, minus a couple a degrees one way or the other (whatever "88 degrees to retrograde" means). I've seen the reference figures for the angles, and I don't understand what "degrees to" means.
The angle is in reference to the direction Dres is travelling and will assume a prograde orbit. In the case of 88° the manoeuvre node will be on the Sun facing side of the orbit almost directly perpendicular to Dres' direction of travel and the burn will be retrograde relative to Dres' direction of travel.
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20m hold. Nice views at the moment.
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1 hour ago, sevenperforce said:
I can't see how they would have managed to get enough LOX to get as high as they did.
Doing some rough calculations, the third stage usually shuts down with about 3t of unused propellant so if it runs 9 tonnes of oxidiser dry it'll come up about 500m/s short compared to a normal burn.
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6 hours ago, MaverickSawyer said:
Better idea: make the connectors different enough that one physically cannot mistakenly cross them up. It's something I call "designing with a high level of idiot resistance".
I doubt they loaded into the wrong tanks, they just loaded the incorrect amount into the right tanks. LOx tank only got 9 cubic metres and the Kerosene tank maxed out at 9 cubic metres despite them trying to jam in more (there just physically isn't more than 9 cubic metres of space in the kerosene tank).
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13 minutes ago, Jacke said:
I've heard that it's now thought that ejecting from Gemini at almost any flight state would have been fatal too. Of the spacecraft that have been designed with ejection seats (Vostok, Gemini, the initial Shuttle flights), all we know for sure is that the Vostok seat works on recovery.
See the top pinned comment in this video about the Gemini ejection system.
https://www.youtube.com/watch?v=5IRdZjjq1Ik
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14 hours ago, MinimumSky5 said:
Very likely. Scott Manley has said that they intend to detonate the entire rocket, to see if the capsule can protect the astronauts from the worst possible situation it is designed to survive.
I'd have thought they'd want the booster intact and firing its engines normally to ensure the abort motors can pull the capsule away. A blowing up booster just makes it easier for the capsule to escape. The question then becomes whether the booster will destroy itself by suddenly having a blunt second stage exposed to maximum aerodynamic pressure.
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14 minutes ago, Xd the great said:
Why is she wearing sunglasses?
It's sunny outside.
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I image a shallower S turn increases range and a more aggressive S turn allows you to shorten the flight path giving a large down range and cross range capability.
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1 hour ago, Xd the great said:
Probably under 1 min.
And how warm is warm propellant?
Still cold enough to be liquid.
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Cloudy today.
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First Ariane 5 for 2019 scheduled for launch Feb.5 21.00-22.00 UTC.
https://www.youtube.com/watch?v=jMGEinBfBhs
How dangerous is duna’s atmosphere
in KSP1 Gameplay Questions and Tutorials
Posted
A normal Hohmann transfer from Kerbin usually doesn't get you fast enough to need heat shielding for aerocapture but a high speed transfer can. As with other atmospheres it comes down to entry speed.