Martin JRM Mars
Transport Flying Boat / Waterbomber
The Martin JRM Mars is a four-engine transport flying boat produced by the US-American manufacturer Glenn L. Martin Company.
The total production of the JRM Mars includes one prototype aircraft, five JRM-1 (later converted to JRM-3) and one JRM-2. The JRM Mars was initially operated by the US Navy. After retirement of US Navy service, four JRM Mars were converted to civil water-bombers for aeral firefighting, operated by Flying Tankers Inc., later by Coulson Flying Tankers. The payload for water is 27.216 kg (60.000 lbs).
| Propulsion | 4 Radial Engines |
| Engine Model | Wright R-3350-24WA Duplex Cyclone |
| Engine Power (each) | 1864 kW | 2500 hp |
| Speed | 356 km/h | 192 kts
221 mph |
| Service Ceiling | 4.450 m | 14.600 ft |
| Range | 8.001 km | 4.320 NM
4.971 mi. |
| Empty Weight | 34.279 kg | 75.572 lbs |
| max. Takeoff Weight | 74.800 kg | 164.906 lbs |
| Wing Span | 60,96 m | 200 ft 0 in |
| Wing Area | 342,4 m² | 3686 ft² |
| Length | 35,74 m | 117 ft 3 in |
| Height | 11,71 m | 38 ft 5 in |
| First Flight | 1941 |
| Production Status | out of production |
| Production Range | 1945-1947 |
| Total Production | 6 |
| ICAO Code | MARS |
| Data for (Version) | Martin JRM-3 Mars |
| Variants | JRM-1, JRM-2, JRM-3 |
