Summary
NASA says an engineering model of its DAVINCI Venus probe completed six furnace cycles reaching 465°C. The test evaluated the model’s thermal protection ahead of the probe’s planned descent through Venus’ atmosphere.
NASA reports that an engineering model of its DAVINCI Venus probe passed a thermal test involving six heating cycles to 869°F (465°C). The test, conducted from Aug. 28 to Sept. 10, was designed to reproduce how quickly the probe is expected to heat during its descent through Venus’ atmosphere.
The result is a ground-test milestone for the mission’s probe design. The hardware tested was an engineering development model, and NASA says the team is still working toward approval to enter the final design and fabrication phase.
Six cycles at Venus-like temperatures
For the test, engineers placed the yoga-ball-sized model in a ceramic-lined furnace at Rex Heat Treat in Bedford, Pennsylvania. The chamber reached 465°C over about an hour, matching the pace at which NASA expects the probe to heat during its descent. The team repeated the cycle five more times, and the model completed all six without damage, according to NASA.
More than 100 thermal sensors monitored hardware simulating the probe’s scientific instruments. NASA says the full internal instrumentation was present during the runs, which followed a 55–60-minute descent timeline to Venus’ surface temperature.
The probe must manage two competing demands: protect sensitive instruments from the planet’s heat while allowing hot atmospheric gases to enter through dedicated ports for analysis. Its design includes a strong, lightweight, corrosion-resistant titanium shell. NASA says this test evaluated whether the model could withstand the thermal conditions while shielding its instrument package.
What the probe is designed to investigate
DAVINCI—short for Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging—is being developed to study Venus’ atmosphere and help investigate how the planet formed and changed. Its descent probe is intended to sample atmospheric gases and measure the atmosphere’s structure as it falls through the planet’s dense, toxic air.
The measurements could help researchers examine whether Venus once had oceans and conditions that were habitable, as Earth’s are. The probe is also designed to carry cameras to image the surface and a radio system to send data to the spacecraft flying about 5,600 miles (9,000 kilometres) overhead.
The heat test follows an earlier campaign this summer to demonstrate the probe’s imaging system. Together, the tests advance development of key probe systems; the thermal result reported here applies to the engineering model tested, while the mission continues toward its next design phase.