Alpha Centauri 2

Community => Recreation Commons => Destination: Alpha Centauri => Topic started by: Buster's Uncle on March 20, 2017, 03:11:52 pm

Title: What To Do On The Next Mission To Venus?
Post by: Buster's Uncle on March 20, 2017, 03:11:52 pm

What To Do On The Next Mission To Venus?
International Business Times
Himanshu Goenka  March 19, 2017


(https://www.yahoo.com/sy/ny/api/res/1.2/.J0skBsiCaIIHDkqWpdcUQ--/YXBwaWQ9aGlnaGxhbmRlcjtzbT0xO3c9ODAw/http://media.zenfs.com/en-US/homerun/ibtimes_176/fa63f4ac7d3b17061b4581f22c593265)
Venera-D will be the latest in the Venera series of Russian missions, the only mission to successfully land a spacecraft on the incredibly harsh Venutian surface.



At a three-day meeting in Moscow, from March 14-16, scientists from Russia and the United States discussed the scientific objectives of the next planned mission to Venus, Venera-D. Planned for a launch in 2026-2027, the Russian mission continues the Venera spacecraft series of the erstwhile Soviet Union, and the D in its name stands for dolgozhivuschaya, Russian for long-lived.

The Russia-U.S. Joint Science Definition Team (JSDT) discussed the architecture, possible scenarios and the scientific payload of the mission, according to an emailed statement by the Space Research Institute (IKI) of the Russian Academy of Sciences, where the meeting took place.

According to the statement, the meeting ended with the following conclusions: “The nearest task of the JSDT would be more focused analysis of the project and its technical feasibility with regard to modern technologies. Another task is to look more closely at mission’s possible scenarios assuming launch in 2026-27. Then, the scientists will search for potential landing site candidates, which would meet both scientific and engineering requirements.”

Ahead of the meeting, the JSDT submitted a report to the participating institutions in January, outlining some of the possible scenarios for Venera-D. As of current planning, the mission will have an orbiter and a lander, with the former operating for up to three years above the Venutian atmosphere and the latter to be designed to survive on the planet’s surface for a few hours. There could also be a solar-powered airship that will explore Venus’ upper atmosphere independently for up to three months.

Despite being the closest planet to Earth, not just in terms of distance, but also composition and size, Venus is still quite a mystery to us. Its extremely harsh environment makes it a very difficult place to study, as clouds of sulfuric acid in its atmosphere and near-surface temperatures of about 470 degrees Celsius (880 degrees Fahrenheit) make it difficult for any Earth instruments to survive there.

Since the first Venera mission (Venera is the Russian name for Venus) in 1961, only a total of 10 probes have successfully landed on the planet, all of them Russian. The JSDT working on Venera-D is made up of scientists from IKI, NASA and other Russian and U.S. organizations, and is co-chaired by Ludmila Zasova of IKI and David Senske of NASA’s Jet Propulsion Laboratory.

Ahead of the meeting, in a statement on March 10, Senske said: “On a solar-system scale, Earth and Venus are very close together and of similar size and makeup. Among the goals that we would like to see if we can accomplish with such a potential partnership is to understand how Venus’ climate operates so as to understand the mechanism that has given rise to the rampant greenhouse effect we see today.”


https://www.yahoo.com/news/next-mission-venus-075720715.html (https://www.yahoo.com/news/next-mission-venus-075720715.html)

Title: Re: What To Do On The Next Mission To Venus?
Post by: gwillybj on March 20, 2017, 03:50:49 pm

Since lead melts at 600F, what do they have to use on the circuit boards and such to set the components for a Venus lander?

Title: Re: What To Do On The Next Mission To Venus?
Post by: Unorthodox on March 21, 2017, 01:51:53 pm

Quote from: gwillybj on March 20, 2017, 03:50:49 pm

Since lead melts at 600F, what do they have to use on the circuit boards and such to set the components for a Venus lander?

Previous missions simply attempted to cool the chips in hermetically sealed chambers, and thus had a short life span for the coolant to last. 

However, they've been making headway on a chip than can just straight up survive. 

https://arstechnica.com/science/2017/02/venus-computer-chip/

Title: Re: What To Do On The Next Mission To Venus?
Post by: gwillybj on March 22, 2017, 12:09:36 am

I found the article very interesting. Besides any Venus lander type of use, I can see high-temperature semiconductors finding their way into our own personal computers for graphics-intensive applications like video streaming and games that want high frame rates - things that put video cards through a lot of work.

edit: I just read the comments after the article and one said essentially the same thing.