|
|
Thread Tools | Display Modes |
#12
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
On Wednesday, September 16, 2020 at 5:12:09 PM UTC-4, Jeff Findley wrote:
In article , says... They would need to have another airship nearby and a way to quickly move all the people to that airship. That's a possibility, but not what I was thinking. Or have a rocket with enough passenger capacity to go to orbit. This is what I was thinking. Since the crew likely doesn't want to say in the atmosphere of Venus forever, they presumably already have a launch vehicle which will get them from the airship back to Venus orbit. That would double as an escape vehicle. It would depend on the crew size. If it was 5 or 6 people they could have such a vehicle on hand. If the crew was 25 or 30 or 50 or more that was built up over time, that might take 5 or 10 separate trips to evacuate all of them. They might not have enough time to evacuate all. |
#13
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
In article ,
says... On Wednesday, September 16, 2020 at 5:12:09 PM UTC-4, Jeff Findley wrote: In article , says... They would need to have another airship nearby and a way to quickly move all the people to that airship. That's a possibility, but not what I was thinking. Or have a rocket with enough passenger capacity to go to orbit. This is what I was thinking. Since the crew likely doesn't want to say in the atmosphere of Venus forever, they presumably already have a launch vehicle which will get them from the airship back to Venus orbit. That would double as an escape vehicle. It would depend on the crew size. If it was 5 or 6 people they could have such a vehicle on hand. If the crew was 25 or 30 or 50 or more that was built up over time, that might take 5 or 10 separate trips to evacuate all of them. They might not have enough time to evacuate all. You'd certainly want enough vehicles on hand to get all the crew out at the same time. For example, ISS always has enough vehicles docked that the entire crew can evacuate, if need be. As for crew size, I really can't imagine a Venus expedition with more than 5 or 6 people happening in the next several decades. First we'd want to test uncrewed atmospheric vehicles. Then we'd slowly work our way up to something big enough to support a crew. That's going to take time, especially when you consider how long it takes to get to Venus and back. All my opinion, of course. If the likes of Starship works out, that changes the lift capacity equation dramatically. With costs dropping and payload size increasing, that would be a boon to any Venus exploration initiative. Jeff -- All opinions posted by me on Usenet News are mine, and mine alone. These posts do not reflect the opinions of my family, friends, employer, or any organization that I am a member of. |
#14
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
On Sep/17/2020 at 07:29, Jeff Findley wrote :
In article , says... On Wednesday, September 16, 2020 at 5:12:09 PM UTC-4, Jeff Findley wrote: In article , says... They would need to have another airship nearby and a way to quickly move all the people to that airship. That's a possibility, but not what I was thinking. Or have a rocket with enough passenger capacity to go to orbit. This is what I was thinking. Since the crew likely doesn't want to say in the atmosphere of Venus forever, they presumably already have a launch vehicle which will get them from the airship back to Venus orbit. That would double as an escape vehicle. It would depend on the crew size. If it was 5 or 6 people they could have such a vehicle on hand. If the crew was 25 or 30 or 50 or more that was built up over time, that might take 5 or 10 separate trips to evacuate all of them. They might not have enough time to evacuate all. You'd certainly want enough vehicles on hand to get all the crew out at the same time. For example, ISS always has enough vehicles docked that the entire crew can evacuate, if need be. As for crew size, I really can't imagine a Venus expedition with more than 5 or 6 people happening in the next several decades. First we'd want to test uncrewed atmospheric vehicles. Then we'd slowly work our way up to something big enough to support a crew. That's going to take time, especially when you consider how long it takes to get to Venus and back. All my opinion, of course. If the likes of Starship works out, that changes the lift capacity equation dramatically. With costs dropping and payload size increasing, that would be a boon to any Venus exploration initiative. And on Jul/4/2020 at 18:29 wrote: | Workable? Or just another flight of fancy? | | "This airship flies from the upper atmospheric station to orbit. It | | uses hybrid chemical/electric propulsion to slowly accelerate and | | | reach orbit. | | "A two mile wide station parked at 140,000 feet is the new way station | to space. The station acts not only as a port for the orbital | | | | airship but also as a research center, construction site and tourist | | destination." | | See: | | http://www.jpaerospace.com/atohandout.pdf | | & | | https://www.thedrive.com/the-war-zone/32082/we-talk-giant-boomerang-| | shaped-airships-space-and-phoenix-lights-with-jp-aerospaces-founder At the time, I expressed my scepticism about those balloons to space, and I still am sceptic. But if they do manage to make them work, for Earth, there really is no reason why they couldn't do it for Venus. They would just skip the leg going from the ground to their high altitude balloon station. In fact, I'm not sure if the high altitude station is needed at all. They could just fly the balloon between orbit and high altitude atmosphere. If they can prove the existence of life in Venus' atmosphere, and prove that it has an independent origin from life on Earth (not a panspermia thing); I would consider that to be one of the most important scientific discovery, if not the most important scientific discovery, ever. But I think that some weird chemistry is more likely to be the cause here. Though I am hoping for life. Alain Fournier |
#15
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
In message
JF Mezei wrote: So you have a sci-fi floating station in Venus atmosphere held up by some balloons. With X number of people in it. JBIS Vol 73 No 4 April 2020, "Conceptual Design of a Crewed Platform in the Venusian Atmosphere", Markus Grass, Marius Schwinning, Reinhold Ewald, Institute of Space Systems, University of Stuttgart. Anthony |
#16
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
In article ,
says... So you have a sci-fi floating station in Venus atmosphere held up by some balloons. With X number of people in it. 1- How would people go from Earth-Venus spaceship to land on that floating station? Is there a way to go from orbit down to whatever altitude that station is and land vertically after having lost all horizontal speed? Obviously you can't land on top of the balloon, you have to somehow attach to the HAB that's dangling below it. A Zeppelin like ship wouldn't be much different. You still put the HAB on the bottom. Sparrowhawk biplane docking with an airship https://www.pinterest.com/pin/236016836691790510/ USS Macon & Sparrowhawks https://www.youtube.com/watch?v=IWoEQRl8dCs Parasite aircraft https://en.wikipedia.org/wiki/Parasite_aircraft If by using atmpsphere to kill your orbital/horizontal speed you end uip at altitude lower than the station, then you end up needing a lot of fuel. Could deploy a balloon for buoyancy. If you de-orbit, and then inflate a balloon at some point to not only keep you above station altitude but also aerobrake you, then you need a good ballon that won't burn up. (and need materials that won't be destroyed by the acid in atmpsphere) It seems to me that if you can solve how to land on the floating platform, you have also figured out how to get off from it and back into space. All except for the delta-V required. Launching from Venus, even at a high altitude, is going to be at least as hard as launching from earth, IMHO. Similar gravities and similar issue with air drag. Jeff -- All opinions posted by me on Usenet News are mine, and mine alone. These posts do not reflect the opinions of my family, friends, employer, or any organization that I am a member of. |
#17
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
Now the Russians are claiming the place:
"Venus is a “Russian planet,” the head of Russia’s state space agency said Tuesday following new research that suggests there could be life on the second planet from the sun. The research, published in the journal Nature Astronomy on Monday, details British and American scientists’ discovery of phosphine gas in Venus’ clouds and puts forward possible theories for its origin, including that of extraterrestrial life." See: https://www.themoscowtimes.com/2020/...ef-says-a71451 |
#18
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
On Tuesday, September 22, 2020 at 1:14:09 AM UTC-4, wrote:
Now the Russians are claiming the place: "Venus is a “Russian planet,” the head of Russia’s state space agency said Tuesday following They are claiming the entire planet? |
#19
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
On 9/14/2020 3:13 PM, Alain Fournier wrote:
If I recall correctly, it was Pat Flannery who would talk about the purple haired Venusian fire ladies. If he was still around he would be happy to know that they have microbial company. Well since you brought Pat up, closing in on the 9th anniversary of his passing, yes I'd have to agree. Pat would be the first to point out that - astronaughts - arriving at Venus should bring medicinal antibiotics. As Pat would also rightly point out, not only Venusian ladies were purple haired. Apparently it affects women at the Lunar Planetary UFO Protection Outpost as well. Or perhaps they were wigs to ward off harmful solar and UV radiation? Pat would have been all for it.... https://24femmespersecond.files.word...6584a7_b-2.jpg Dave |
#20
|
|||
|
|||
Life on Venus? Astronomers See a Signal in Its Clouds
On Wednesday, September 23, 2020 at 11:50:19 AM UTC-4, David Spain wrote:
On 9/14/2020 3:13 PM, Alain Fournier wrote: If I recall correctly, it was Pat Flannery who would talk about the purple haired Venusian fire ladies. If he was still around he would be happy to know that they have microbial company. Well since you brought Pat up, closing in on the 9th anniversary of his passing, yes I'd have to agree. Pat would be the first to point out that - astronaughts - arriving at Venus should bring medicinal antibiotics. As Pat would also rightly point out, not only Venusian ladies were purple haired. Apparently it affects women at the Lunar Planetary UFO Protection Outpost as well. Or perhaps they were wigs to ward off harmful solar and UV radiation? Pat would have been all for it.... https://24femmespersecond.files.word...6584a7_b-2.jpg Dave How dare you insinuate they were wigs! |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Astronomers Record Signal Coming From Deep Space Every 157 Days | Internetado[_3_] | Astronomy Misc | 0 | June 9th 20 03:09 AM |
SETI astronomers search for ET signal from Gliese 581 | signifiespost | Amateur Astronomy | 6 | July 3rd 12 01:41 PM |
What if on Venus's Clouds | G=EMC^2 Glazier | Misc | 4 | March 24th 06 03:21 PM |
Venus/Moon - to Terraform, DNA seed or Not - in spite of whatever you've been told, there's other intelligent life on Venus. Venus simply is NOT insurmountably too hot and nasty. | Matt Wiser | History | 1 | February 7th 06 06:02 AM |
News reports of signal from alien life off-base | Guy Macon | SETI | 0 | September 3rd 04 06:57 PM |