Detailed Description
Landing gear legs built from 6063 aluminum extrusions corrode rapidly where moisture pools at strut-to-fuselage interfaces-especially in agricultural UAVs operating in fertilizer-laden environments. Within 4–6 months, pitting corrosion reduces wall thickness by 0.3–0.5mm, compromising yield margin. Additionally, aluminum's low specific stiffness forces oversized sections that add unnecessary drag.
Our carbon square tubes use T700 prepreg with corner-radius tooling and autoclave cure. [0°/90°] dominant layup delivers 1,850MPa axial compression strength at 1.5g/cm³ density. A 25×25×2mm×500mm leg replaces aluminum at 52% weight saving. Corner radii are molded to R3.0mm minimum, preventing stress concentration. Hydrostatic crush testing confirms 18kN ultimate axial load before buckling-3.2× typical UAV landing impact loads.
Surface finish is smooth matte, compatible with UV-resistant topcoat systems. Batch testing includes C-scan ultrasonic inspection for delamination and wall thickness mapping. Legal export handling covers all documentation for international shipment of composite tubing.
Specification
|
Parameter |
Value |
|---|---|
|
Process |
Prepreg autoclave |
|
Fiber |
T700 / T300 |
|
Section |
10×10mm to 60×60mm |
|
Wall |
1.0mm – 4.0mm |
|
Length |
Up to 2500mm |
|
Axial compression |
≥1,850MPa |
|
Weight saving |
45–52% vs AL |
|
Surface |
Matte / peel-ply |
|
Export |
Legal export certified |
Custom FAQ
Q: Can square tubes be supplied pre-notched for cross-brace fitting?
A: Yes, CNC notch cutting with ±0.1mm accuracy; notches include chamfered edges to prevent fiber peel.
Q: Are these tubes compatible with standard aluminum clamps?
A: Yes, but we recommend isolating clamps with rubber shim to prevent galvanic corrosion if used with metal fittings.
Q: What is the maximum continuous length for 40×40mm square tube?
A: Up to 2,500mm in one piece; longer lengths available as bonded splice sections.
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