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Results for "I suspect"
Search options not deleted user 12102
1 vote
1 answer
214 views

Which one of these (if any) is the Moon? What are the rest?

I frequently see the Moon in SpaceX videos, "I suspect" the frequency is higher than random, but can't prove it (yet!) … "I suspect" that one of them is the Moon, any thoughts on which one it is, and what the others are? …
uhoh's user avatar
  • 151k
6 votes
2 answers
473 views

What would the BFS' landing on Mars be like, if it is different from this animation?

If they are substantially different (as "I suspect") then what would a landing on Mars be like? …
uhoh's user avatar
  • 151k
12 votes
5 answers
3k views

Highest DC voltage ever intentionally produced in space?

Photomultiplier tubes and micro-channel plates and charged particle spectrometers are common users of at least a few kV, but I suspect that there are some higher voltages out there somewhere. 10 kV? …
uhoh's user avatar
  • 151k
7 votes
1 answer
419 views

What is "OBJECT BS"?

I checked 2018-099 in Celestrak's satcat again for the question Where can I find the TLE of ExseedSat 1, India's first ever private LEO satellite? … Please no "I suspect..." answers. If it is known please post, but for this question pure speculation doesn't count without some supporting source(s). …
uhoh's user avatar
  • 151k
4 votes
1 answer
2k views

How does the poliastro python package "Going to Mars with Python" example work? What's it re...

@astrojuanlu's answer mentions the existence of the Python package poliastro, and in the documentation there I found an example titled Going to Mars with Python using poliastro among others. … I'm looking for more than just armchair speculation or "I suspect" class of answers. …
uhoh's user avatar
  • 151k
7 votes
4 answers
2k views

Has ion propulsion ever been used in a deep space trajectory correction maneuver proper?

I am sure that the long propulsive periods (months or years) have had integrated fine tunings as their progress has been monitored, Thrust vectoring for ion propulsion - any plans or current research? … A specific example is necessary for a "yes" answer, but I suspect the answer might be "no" or "not really in a separate TCM as they are currently recognized, but definitely integrated into long propulsive …
uhoh's user avatar
  • 151k
15 votes
3 answers
2k views

Just how much rope have different crewed missions been given?

That sounds so reasonable to me that "I suspect" most crewed missions were given enough rope to do at least something. Question: Just how much rope have different crewed missions been given? …
uhoh's user avatar
  • 151k
9 votes
0 answers
1k views

Roughly how many self-viewing cameras are present in a Falcon 9 LEO mission?

At least two on the 2nd stage nozzle, at least one on the payload, at least one on a gridded fin, one in the 2nd stage LOX tank, and I suspect there are many more. …
uhoh's user avatar
  • 151k
0 votes
1 answer
179 views

What is the difference between "body drag", "frictional drag" and "pressure drag" for astron...

I suspect the main reason my estimate was high is that I assumed the velocity of the backwards underhand motion of the astronaut was half of the world's record for the speed of a thrown ball. … I should have done some frame-by-frame photogrammetry of the YouTube video instead. …
uhoh's user avatar
  • 151k
2 votes
2 answers
486 views

Saturn I's four outer engines' gas generator exhaust, why not vent to the side like the four...

At about 04:58 in Scott Manley's new video NASA Might Be Giving Away A Saturn I Rocket - Here's Why I Love This Vintage Booster he says: So the four engines in the middle of this thrust plate (plane?) … I think that’s great, and I never quite figured out why this decision was taken, and I suspect it’s got something to do with the engines gimbaling. …
uhoh's user avatar
  • 151k
6 votes
1 answer
708 views

How rare is it in the 21st century to use five stages to get to LEO, especially for a low-ma...

ORS-5 or "SensorSat" is a technology demonstration for a class of satellites that will sit in LEO and keep an eye on the GEO belt for any "debris" which I suspect means pranksats or worse. …
uhoh's user avatar
  • 151k
0 votes
2 answers
176 views

How are Experienced and Observed Mission Elapsed Times defined? (EMET & OMET)

this currently unsourced answer currently says in toto: I suspect any interstellar travel will have relativistic effects (it's a factor of even interplanetary travel), the only reasonable timezones are … Also, since (I presume, because again no sources) that each is measured in a different frame. …
uhoh's user avatar
  • 151k
8 votes
1 answer
704 views

When did they stop routing long-distance analog phone calls through satellites? What was the...

I have read that in the early 1960's Telstar 1 and 2 were the first satellites to route long distance telephone calls. I seem to remember that long, long ago, long distance (overseas?) … phone calls did have noticeable latency and sometimes annoying echoes, and I suspect that this was due in part to the light time from Earth to a satellite and then back to Earth, and the echoes were because …
uhoh's user avatar
  • 151k
0 votes
1 answer
309 views

What inclination change could the 5th stage Orion 38 motor provide ORS-5 (SensorSat)?

ORS-5 or "SensorSat" is a technology demonstration for a class of satellites that will sit in LEO and keep an eye on the GEO belt for any "debris" which I suspect means pranksats or worse. … If I understand correctly, "The final Orion 38 motor burn" does not suggest that the solid fuel motor can burn twice, but that both the 4th and 5th stages are Orion 38 motors, and "the final burn" really …
uhoh's user avatar
  • 151k
6 votes
Accepted

What is this retroreflector on the Mars InSight lander used for?

I quote Spaceflight 101: The INRRI Corner-Cube Retroreflector weighs under 25 grams, is 5.5 by 2.0 centimeters in size and is envisioned to be tracked by Mars orbiters capable of laser ranging or laser … Both are for future orbital laser missions and both have a link to Europe, and they look identical as far as I can tell, so I suspect they are sisters. …
uhoh's user avatar
  • 151k

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