PRS-M3DTEX Overview
Last updated
Last updated
The PRS-M3DTEX is composed of two (2) main components. The first of these is the PRS-M3DTEX enclosure itself, which contains the following three (3) internal functional components:
The Electronics Module (EM), which houses the capacitor, sensors, and controller. These electronics also control the Autonomous Triggering System (ATS) that will deploy the parachute.
The non-removable Parachute Pod™, which contains an energetic charge, a push plate, and a folded parachute.
The mounting bracket, strap, strap insert, and mounting screws, which attach the PRS-M3DTEX to the DJI M3D/T and allow for easy removal.
The second main component is the external flight termination system (EFTS), an external module that enables the power shutoff for the drone. The EFTS contains the following two (2) internal functional components:
The Sleeve, which contains the electronics for the Flight Termination System and which houses the drone's battery.
The cable, which connects the EFTS to the PRS and allows for the PRS to trigger the Flight Termination System.
When the user receives the product, the PRS-M3DTEX will come fully assembled and ready for installation. The required hardware for installation will be included in an accessories bag. For each installation on a DJI M3D/T drone, the EFTS sleeve will need to be greased along the gasket track to properly install the sleeve within the DJI M3D/T battery compartment. Upon installation of the sleeve, the top forward gasket door will need to be opened and positioned correctly on the PSDK USB-C port to properly seat the PRS-M3DTEX for mounting. Further information can be found in the "" section.
YOU MUST REGISTER YOUR PRS BEFORE USING IT TO MAINTAIN REGULATORY COMPLIANCE AND WARRANTY. REGISTER AT
To use the PRS-M3DTEX for a flight, the DJI M3D/T and PRS-M3DTEX shall be inspected prior to flight. Once configured for flight and installed in the DJI Dock 2, you will be ready to begin. Once the aircraft is in its flight configuration, the AVSS PRS-M3DTEX can be mounted to the DJI M3D/T. Once the PRS-M3DTEX is secured to the DJI M3D/T as per the Installation instructions, the PRS-M3DTEX will be ready for use. The PRS-M3DTEX will turn on automatically when the DJI M3D/T is turned on.
The Manual Triggering Device (MTD) is initiated through the Drone transmitter using the PSDK onboard interface. To perform a manual trigger of the PRS-M3DTEX, the system will need to be armed (see the "" section for instructions), and the deploy button must be pressed for three (3) seconds. For the MTD to be armed, the pilot must toggle ON the "Parachute Arm" button in the PSDK configuration window AND the drone must maintain an altitude of more than 5 meters above ground. The arm status of the PRS is displayed in the status message window of the PSDK interface on the Drone transmitter, as shown in the "" section.
Any error with the Drone will be communicated to the user via the Drone transmitter. During the flight, the PRS-M3DTEX ATS will arm itself only once it has reached the minimum deployable barometric altitude above takeoff. Afterward, if the Drone experiences a failure, the ATS detects the failure using a suite of sensors, forces the motors to shut off, and deploys the parachute without the need for pilot input.
DO NOT HAND-LAUNCH OR CATCH THE DRONE WITH THE PRS-M3DTEX ATTACHED.
IF YOU FLY BELOW THE MDA, THE PRS-M3DTEX MAY NOT FUNCTION. THE PILOT SHALL NOT OPERATE THE DRONE WITH PRS-M3DTEX ATTACHED OVER PEOPLE BELOW THE MDA.
The PRS-M3DTEX includes an External FTS (EFTS) module for Enhanced Containment Compliance under MOC2511. The PRS-M3DTEX uses both the PSDK FTS and an additional external FTS module that is installed between the drone and the drone battery. The PRS-M3DTEX EFTS is triggered via a geofence function. This geofence will trigger when armed and when either a user-defined ceiling is breached, or a user-defined boundary is breached. The PRS-M3DTEX has an independent GNSS receiver that measures the position of the drone. The geofence is transferred to the PRS-M3DTEX via a USB-C cable connected to a laptop. See the Geofencingsection for more information on transferring the Geofence.
Maximum number of activations: 266.
The GNSS receiver does not have range limitations; however, the user should define the ceiling based on the maximum Average Mean Sea Level altitude expected over the takeoff altitude
Minimum extent of Ground Risk Buffer: 54 meters (max speed of 15 m/s, 34 meter altitude, wind speed of 1 m/s)
30 + 1*15 + 1.1*W*34/4.34 = 54 meters (see equation below)
The formula below provides a method to calculate the ground risk buffer zone for your operation according to the Specific Operation Risk Assessment. The max altitude (Alt) is based on the operation and is measured in meters. The descent rate should be based off the maximum takeoff weight which is 4.34 m/s. There is a maximum 30 meter buffer added to the PRS-M3DTEX geofence, which provides a buffer to avoid unintended triggers of the geofence when flying near the geofence. The speed is the drone's top speed measured in meters per second, which is multiplied by 1 second, as the PRS has a 1 second time buffer between breaching the geofence and triggering. The wind speed (Wind) is the environmental wind speed for that operation in meters per second (not including gust). The equation is as follows: