MIL-DTL-62177E AVDS-1790-2 Engine Series Specification Download
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MIL-DTL-62177E 22 Electrical loading Endurance hours -2, -2A, -2D, -2DR or -2DA engine -2C or -2CA engine 0-100 101-200 201-300 301-400 100 ± 10 A 200 ± 10 A 200 ± 10 A 300 ± 10 A 300 ± 10 A 400 ± 10 A 500 ± 10 A 650 ± 10 A 4.6.4.2 Borescope inspection. To determine conformance to 3.5.4, the engine shall be borescope inspected and the condition of the cylinders recorded. 4.6.5 Operating environment requirements verification. 4.6.5.1 Extreme temperature starting ability. To determine conformance to 3.6.1, the engine shall be subjected to the following tests: a. The engine shall be cold-soaked to an ambient temperature of -25°F. Then, without external aids or benefit of solar radiation, the engine shall be started. b. The engine shall be cold-soaked to an ambient temperature of -65°F with the winterization kit preheating the cold-soaked batteries and lubricating oil to -25°F). Then the engine shall be started. c. The engine shall be operated at the full power setting and at an ambient temperature of 115°F with exposure to maximum solar radiation until the lubricating oil reaches the maximum attainable temperature up to 250°F measured at the main oil gallery (oil cooler outlet). Then the engine shall be stopped, and restarted. 4.6.5.2 High temperature operation. To determine conformance to 3.6.2, the engine shall be operated at the maximum GCBHP (see table I) with a maximum air inlet temperature of 115°F. The lubricating oil temperature shall be measured at the main oil gallery (oil cooler outlet), and the exhaust gas temperature at each cylinder port. 4.6.5.3 Low pressure. To determine conformance to 3.6.3, the engine shall be operated at the following ambient conditions: Elevation ft (m) Pressure in. of Hg (cm of Hg) Temperature 3000 (914) 4000 (1219) 5000 (1524) 6000 (1829) 7000 (2134) 8000 (2438) 26.8 (68.1) 25.8 (65.5) 24.9 (63.2) 24.0 (61) 23.1 (58.7) 22.2 (56.4) 115°F 108°F (42°C) 100°F 97°F (36°C) 93°F (34°C) 90°F (32°C)