Davinci+ mission might not last long...
According to the Press Release: "The mission consists of a DESCENT (my caps !!) sphere that will plunge through the planet’s thick atmosphere, making precise measurements of noble gases and other elements to understand why Venus’ atmosphere is a runaway hothouse compared the Earth’s."
And, apparently "Venus today is a hellish world. It has a crushing carbon dioxide atmosphere 90 times as thick as Earth’s. There is almost no water vapor. Temperatures reach 864 degrees Fahrenheit (462 degrees Celsius) at its surface."
"Above the dense CO2 layer are thick clouds, consisting mainly of sulfuric acid, which is formed by sulfur dioxide and water through a chemical reaction resulting in sulfuric acid hydrate. Additionally, the atmosphere consists of approximately 1% ferric chloride. Other possible constituents of the cloud particles are ferric sulfate, aluminium chloride and phosphoric anhydride. "
"Strong 300 km/h (185 mph) winds at the cloud tops go around Venus about every four to five Earth days. Winds on Venus move at up to 60 times the speed of its rotation, whereas Earth's fastest winds are only 10–20% rotation speed."
So, very strong winds, sulfuric acid atmosphere and extremly high temps at the surface.
One wonders how NASA can build something that will last long enough to survive and take useful readings and photo's...still, they have between 7 and 9 years until the launch date, so something will turn up no doubt...unless someone makes the $500m budget vanish quickly !