Venus LEVL Probe - Peer Reviewed Paper

Aerospace MDPI July 2022 Leading-Edge Vortex Lift (LEVL) Sample Probe for Venusian Atmosphere

https://www.mdpi.com/2226-4310/9/9/471 Can a small, lightweight, free-falling sample probe be slowed enough in the Venusian atmosphere to run a 10 min microelectromechanical systems (MEMS) ion gas micro spectrometer, without adding a propulsion system or explosives and parachutes to the probe mass? The answer is yes, it can.

Understanding the Challenges of Venusian Atmospheric Entry

The atmosphere of Venus presents a unique set of challenges for any probe attempting to study its composition and dynamics. With an atmospheric pressure about 92 times greater than that of Earth and temperatures that can reach up to 467 degrees Celsius (872 degrees Fahrenheit), the conditions are extreme. These factors necessitate innovative engineering solutions to ensure that scientific instruments can operate effectively during their descent and data collection phases.

Design Considerations for the Probe

The design of a small, lightweight sample probe must take into account not only the harsh environmental conditions but also the need for effective data collection. The aim is to deploy a microelectromechanical systems (MEMS) ion gas micro spectrometer that can function for an extended period, such as 10 minutes, while experiencing rapid descent. To achieve this, the probe must be engineered to maximise its surface area relative to its mass, allowing it to utilise atmospheric drag for deceleration.

Utilising Atmospheric Drag

By optimising the shape of the probe to increase aerodynamic resistance, it can slow down significantly as it falls through the denser layers of the Venusian atmosphere. This method relies on the principle that the greater the surface area exposed to the oncoming atmospheric particles, the greater the drag force will be generated, thereby reducing the terminal velocity of the probe.

Microelectromechanical Systems (MEMS) Ion Gas Micro Spectrometer

The MEMS ion gas micro spectrometer is a sophisticated instrument capable of analysing the composition of gases in the Venusian atmosphere. This technology is compact and lightweight, making it ideal for integration into a small probe. The spectrometer works by ionising gas samples and measuring the resulting ions to determine their chemical composition. The ability to operate for a continuous 10 minutes is crucial, as it allows for a thorough analysis of the atmospheric conditions at various altitudes during descent.

Conclusion: Feasibility of the Mission

The concept of deploying a small, lightweight, free-falling probe equipped with a MEMS ion gas micro spectrometer in the Venusian atmosphere is not only feasible but also presents an exciting opportunity for scientific exploration. By leveraging atmospheric drag and innovative design, it is possible to collect valuable data without the need for additional propulsion systems, explosives, or parachutes. This approach opens new avenues for understanding the complex atmospheric dynamics of Venus and contributes to the broader field of planetary science. Read our full paper @ https://www.mdpi.com/2226-4310/9/9/471