Pitot, Static and Attitude Sensor Cavity

thingiverse

Aircraft cabin pressure is a far cry from ambient, as a vehicle-static-source can dramatically enhance static pressure accuracy. This simple box shields the sensitive static pressure sensors from cabin pressure fluctuations caused by airspeed changes and turbulence. Designed to fit both an MPXV7002DP based airspeed module and the compact yet powerful 10-dof WT901B sensor with barometric pressure sensor, this has been crafted to seal the sensitive components from cabin pressure variations. This device was designed to be securely attached to the back of a SoftRF case. It can seamlessly integrate with gliding computers, but it could also be utilized on numerous aviation projects as an ADHRS source for a PFD. After the initial run, I fortified the outer walls to 2mm (from 1mm) and increased the slot depths to 2mm (from 1mm), making it 2mm deeper and adding a generous static tube fillet. This resulted in a more robust design. The static barb proved to be challenging to print, so v3 includes a 9.8mm (3/8") hole for NPT push fittings. This makes it significantly easier to print and install in the plane. V2 & V3 underwent significant improvements overall. The quick releases on v3 are particularly noteworthy. The static didn't align well with the internal port, so I re-arranged it to seal directly to the sensor block. I also added recessed labels for "PITOT" and "STATIC" to prevent installation errors.