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roman-dvorak authored Feb 20, 2024
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Expand Up @@ -17,18 +17,25 @@ TFSLOT is a state-of-the-art airspeed sensor designed specifically for use in Un
## How It Works
The TFSLOT01 sensor uses the Venturi effect to measure airspeed, allowing precise tracking of airspeed even at low speeds.

Air at a certain airspeed enters through an opening between two precisely defined airfoil profiles. As the depth within the sensor increases, the effective cross-section area decreases. Since the same volume of air must pass through a smaller cross-section, the flow velocity inside the sensor increases. As a result, based on the law of conservation of energy, the pressure decreases.

Inside the sensor, there are two sampling points connected to the differential pressure sensor by a small channel. The measured pressure difference is then recalculated into the airspeed at the sensor's inlet.

<p align="center">
<img src="/avionics/TFSLOT01/tfslot_crossection.svg" />
</p>


Air at a certain airspeed enters through an opening between two precisely defined airfoil profiles. As the depth within the sensor increases, the effective cross-section area decreases. Since the same volume of air must pass through a smaller cross-section, the flow velocity inside the sensor increases. As a result, based on the law of conservation of energy, the pressure decreases.

Inside the sensor, there are two sampling points connected to the differential pressure sensor by a small channel. The measured pressure difference is then recalculated into the airspeed at the sensor's inlet.


In addition to airspeed sensing, the sensor includes an integrated IMU unit that can also serve as an external magnetometer, because airspeed sensors are usually placed away from electromagnetic interference sources.


<p align="center">
<img src="/avionics/TFSLOT01/TFSLOT_4_small.jpg" />
</p>


## TFSLOT01 features
- **High Resolution** at low airspeeds (below 10 m/s)
- **Configurable Sensitivity** by modifying the airfoil profile
Expand All @@ -46,10 +53,6 @@ In addition to airspeed sensing, the sensor includes an integrated IMU unit that
TFSLOT is available for purchase online through the [Tindie store](https://www.tindie.com/products/thunderfly/tfslot01a-airspeed-sensor-with-integrated-imu/). The package is packed and shipped by us, the ThunderFly team. If you need a larger quantity or custom modifications, please contact us [by email](https://www.thunderfly.cz/contact-us.html) for quotation.


<p align="center">
<img src="/avionics/TFSLOT01/TFSLOT_4_small.jpg" />
</p>

## Support and Integration

### Drone avionics
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