HIGH-ENTHALPY ARC-JET WIND TUNNELS • WATER-COOLED COPPER THROAT • SPMT RIGGING
Arc-Jet Wind Tunnel Nozzle Deflection Calculator
Evaluate throat ovalization, thermal expansion distortion across water-cooled copper alloy liners, SPMT lashing tension requirements, and dynamic transit g-force boundaries.
Nozzle & Transport Parameters
120 tons
Includes convergent-divergent section, jacket, and structural transport strongback.
4.2 m
Divergent shroud bell exit width facing vacuum test chamber.
16.5 m
Total flange-to-flange span across plenum arc chamber interface.
16 Lines (Grade 100)
Cross-lashing wire ropes with calibrated load cell turnbuckles.
Calculated Mechanical & Thermal Margins
STRUCTURALLY STABLE
Throat Ovalization
0.18 mm
<0.50 mm Limit (Pass)
Thermal Expansion
9.82 mm
Linear Axial Growth
Lashing Tension / Line
68.5 kN
Within WLL Limit
Max Allowable G-Force
0.32 g
Dynamic Tri-Axial Limit
Cooling Micro-Channel Stress Capacity 0.8 mm Wall Thickness
Cooling Jacket Hydraulic Stress
38.4% of Yield
Strongback Mid-Span Deflection
1.45 mm (L/11300)
Lashing Safety Factor: 3.2:1 (ASME B30.26)
Nitrogen Blanket: 4.5 psig (Dry N2)
Aerodynamic Throat Integrity Rule: High-enthalpy arc-jets produce total temperatures exceeding 8,000K in Mach 10+ simulation. Any static mechanical distortion exceeding 0.50 mm across the copper throat causes shock-wave reflections that ruin airflow calibration. Longitudinal sliding bearings on the transport strongback must allow free thermal expansion while preventing lateral deflection.
Exspeedite Wind Tunnel Superload Engineering
Request Arc-Jet Nozzle Rigging & Haul Engineering
Consult with our aerospace superload specialists on strongback beam design, micro-vibration dampening, and multi-axle heavy transport routing.