2 layers102.7 × 56.8 mm
RecoveryBoard
psas/lv3.1-recovery
design, analysis, CAD, and testing for the LV3.1 recovery system
158 parts13
2 layers17.7 × 13.3 mm
PassiveModule
psas/lv3.1-recovery13design, analysis, CAD, and testing for the LV3.1 recovery system
- Size
- 17.7 × 13.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 6
- Pads
- 14
- Tracks, vias
- 26, 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 27 Jan 2020
- Updated
- 19 Sep 2026
Overview
PassiveModule is an open-source printed circuit board by psas, from the psas/lv3.1-recovery repository on GitHub. It is a 2-layer board of 17.7 × 13.3 mm with 9 parts on 6 nets, routed with 26 tracks and 6 vias.
README
README.mdLV-3.1 Recovery Repository
The LV-3.1 Electromechanical Recovery System (ERS) is a fully-resettable recovery system for the PSAS Launch Vehicle v 3.1 (LV-3.1). Each ERS "unit" releases a single parachute. The top unit deploys our ballute test parachute that's in the nose cone, the next ERS unit releases a standard drogue, and the final ERS unit releases the main parachute.
Mechanical CAD
All mechanical CAD has been moved to OnShape and can be found here.
Control System
In this Git repo is a PCB with STM32F091 microcontroller that controls the system. See the ControlSystem directory.
Testing and Analysis
The ERS system will be tested by dropping it from a helicopter over a field. Many parameters must be considered for this test including wind speed, altitude, field size, parachute drag coefficients, and parachute release timing. Analysis of drop test dispersal patterns based on fixing some parameters and simulating variation in others enables us to choose an appropriate drop site and drop parameters. Analysis notebooks can by found in the /analysis directory.
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | Conn_01x01_Male | psas-footprints:Mill-Max-1578-3-00-15-00-00-03-0 | J1, J2, J3, J4, J5, J6 |
| 1 | Conn_02x03_Odd_Even | psas-footprints:2x03_1.27mm_Wires_SMD | J7 |
The 7 most common of 9 parts.
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Questions
How big is the PassiveModule PCB?
It measures 17.7 × 13.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PassiveModule use?
9 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the PassiveModule KiCad files?
From the psas/lv3.1-recovery repository on GitHub, at the commit this page was made from: the board is controlSystem/SpringPinBoards/PassiveModule/PassiveModule.kicad_pcb and its schematic controlSystem/HallSensorBoard/HallSensorBoard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PassiveModule design in my own project?
Its repository states no licence, so its author keeps all rights: ask psas before reusing the design.