Core Performance Parameters
| Parameter | Specification | Condition |
|---|---|---|
| Output Flow | 22 ±0.5 GPM (83.3 L/min) | @ 3,000 psi (207 bar), 100% load |
| Pressure Range | 50-3,600 psi (3.4-248 bar) | Continuous duty |
| Prime Mover | Dual 28V DC brushless motors | MIL-STD-704F compliant |
| Power Consumption | 18.5 kVA max (per pump) | Start-up surge ≤250ms |
| Duty Cycle | 100% continuous @ 120°F (49°C) ambient | Derate 1.5%/°C above 130°F (54°C) |
| Noise Level | ≤78 dBA @ 3 ft (1m) | MIL-STD-1474E |
Mechanical & Environmental
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Dimensions:
- Main Housing: 24.8" L × 18.1" W × 15.7" H (630 × 460 × 400mm)
- Dry Weight: 328 lb (149 kg)
Fluid Compatibility:
- MIL-H-83282 / MIL-H-5606 (operating viscosity 7.9-26.4 cSt)
Environmental Tolerance:
- Operating Temp: -65°F to +160°F (-54°C to +71°C)
- Altitude: 70,000 ft (21,300m) certified
- Vibration: 7.6 Grms (MIL-STD-810H, Method 514.8)
- EMI/EMC: DO-160G Section 21 Cat Z (-40dBm margin)
Redundancy & Safety Features
System Architecture:
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graph LR
A[Motor A] --> B[Pump A] --> C[Check Valve A]
D[Motor B] --> E[Pump B] --> F[Check Valve B]
C & F --> G[Common Manifold] --> H[Filtration: βₓ(c)=200]
H --> I[Pressure Transducer: ±0.25% FS]
I --> J[Control Logic: Dual FADEC]
Critical Protections:
- Automatic changeover ≤0.8 sec upon:
• ΔP >500 psi (34.5 bar) differential
• Temperature >275°F (135°C)
• Cavitation detected (RF signature >15mV RMS) - Fire-resistant housing (AMCA 250 Level 3)
PPU-3 DU-2/MKII PDF
ppu-3
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