Damping Design of Jelly Gel Potting for Drone Flight Controllers and IMUs

Multirotor and fixed-wing drone flight controllers stack IMUs, gyroscopes, barometers and magnetometers on boards that must read clean motion data while sitting centimeters from motors and propellers generating broadband vibration from 50 to 500 Hz. Mechanical foam dampers age and drift; hard potting transmits vibration directly; what works is a viscoelastic gel layer tuned to absorb the critical frequency band. Hong Ye HY-9405 jelly gel (penetration 170 plus or minus 30, viscosity 1800 plus or minus 400 mPa.s) is dispensed as a controlled-thickness pad or full enclosure potting: its jelly viscoelasticity dissipates vibration energy as micro-deformation heat, reducing gyro noise and improving GPS-aided attitude hold. At density 1.02 g/cm3 the gel adds only grams to a 30-80 gram controller, contains no metal so it does not shield magnetometers or GPS/RC RF paths, and its low modulus never stresses MEMS sensor packages. Typical usage is 15 to 60 grams per flight controller.

PRODUCT REQUIREMENTS

Avionics damping potting requires: viscoelastic damping across 50-500 Hz motor vibration; minimal added weight; RF and magnetic transparency; zero stress on MEMS packages; moisture and dust sealing; cure without heating sensitive sensors; and tunable hardness.

CORRESPONDING PRODUCT MODEL PARAMETERS

Recommended model: HY-9405 - Blue medium-tack grade for electronic potting, meter sealing, waterproofing and vibration damping

GRADE SELECTION GUIDE

FREQUENTLY ASKED QUESTIONS

Q: Will gel potting interfere with GPS or compass?

A: No. The gel contains no metal or magnetic material and is RF-transparent; standard practice still keeps gel away from magnetometer calibration zones.

Q: How is damping tuned for different drones?

A: Gel layer thickness (typically 3-8mm) and penetration grade are adjusted; softer gel shifts damping lower in frequency, firmer gel higher. Sample kits support testing.

Q: Does the gel add significant weight?

A: No. At density 1.02 g/cm3 a typical controller uses 15-60 grams, adding only grams versus tens of grams for rigid potting.

QUALITY ASSURANCE & CERTIFICATION

Every batch of Hong Ye HY-94 series jelly gel is produced under ISO 9001 certified quality management in a dedicated silicone workshop, with incoming raw-material inspection, in-process mixing control and finished-product testing on every batch. Before release each lot is checked for viscosity, mix ratio, cure time, penetration, color and tack, and a Certificate of Analysis (COA) listing the actual measured values ships with every order. Standard grades carry RoHS 2.0 and REACH SVHC test reports; skin-contact and baby-care grades can be supplied with FDA 21 CFR 177.2600 and LFGB Section 30/31 reports and, on request, ISO 10993 biocompatibility testing; flame-retardant grades meet UL94 V-0. Food-contact, medical and export orders are supported by the corresponding compliance files for customer qualification. Hong Ye has manufactured and supplied jelly gel to contractors, filter builders and equipment makers in over 60 countries since 2005, with monthly capacity above 500 tons, batch traceability and multi-language documentation. Application engineers provide grade selection, sample evaluation, on-site or video pouring guidance and after-sales follow-up, and technical data sheets (TDS), safety data sheets (SDS) and test reports are available before order to support tender and audit processes.

CONCLUSION

The market for tank sealant jelly gel in this application area continues to expand as cleanroom construction, electronic encapsulation, automotive electrification, energy storage and consumer product manufacturing drive demand for reliable two-component addition-cure silicones. Hong Ye supports this growth with ISO 9001 certified production, 500-plus ton monthly capacity, complete compliance documentation and responsive application engineering. Buyers evaluating suppliers are advised to look beyond unit price and compare batch-to-batch consistency, documentation completeness, delivery stability and technical service responsiveness, because the cost of a sealing or potting failure - rework, downtime, certification delay or product recall - far exceeds the incremental cost of a quality gel. Choosing the correct grade for the channel, operating temperature and service environment, following the 1:1 mixing and pouring procedure and validating with a small trial batch all help secure a durable seal. Hong Ye welcomes sample requests and application enquiries; our engineers will recommend the HY-9400, HY-9405 or HY-9409 grade that matches the sealing or potting requirement and support qualification from first sample through volume production.