A hypothetical drone-arm revision record
A worked arm-revision record that keeps the failed first test and the mass target that remained open.
Structural design · Verification · Testing
Drone structural engineering
I’m Marcus Zhao. My responsibilities are to select airframe structures and perform strength verification for consumer drones, test carbon-fibre composites for weight reduction in drone arms, and work with the aerodynamics team on the aircraft's aerodynamic form.
Engineering record
A hypothetical drone-arm revision record
The target was 8% mass reduction. The first test stopped at 6,400 cycles; the revision completed 10,000 cycles and achieved 6.5%.
Open the record ↗Content centre
Latest engineering notes
A two-pass screen for a laminate with a fastener hole
A layup comparison with fixed hole geometry, edge distance, restraint and load direction.
Revision record for a bonded-insert overlap
How an overlap revision changes the analysis input, process record and test stop conditions.
An 18% shift starts with the fixture photographs
Two nominally identical checks become non-comparable when the clamped length moves by 20 mm.
Collaboration
Marcus Zhao
Before a proposal leaves my desk, I put the boundary conditions, verification note, and open items in one place.
When structural and aerodynamic work meet, the available space, interface locations, and load cases still to be checked need to be explicit. A change to the outer form also changes the hand-off record.
After a test issue, the record adds the specimen condition, failure location, model assumptions, and the conditions for the next check. Missing context usually returns as another meeting.
RoleSenior Structural Engineer
CompanyDJI
EducationHarbin Institute of Technology · Aircraft Design and Engineering · Bachelor of Engineering · 2015–2019
LocationShenzhen, China
Checklist
Items I check before review
The three groups cover inputs, local details, and the test record.
Source of the load case, load direction, constraints, deflection limit, and mass target.
01Hole edges, transition regions, bond length, and locations where the layup terminates.
02Fixture boundaries, measurement points, failure location, and the assumptions used in the model.
03Contact
Get in touch
For a conversation about structural verification, composite testing, or cross-discipline engineering work, email me or use LinkedIn.