| Manufacturer |
Douglas Aircraft Corporation |
Glenn L. Martin Company |
| Description |
The Douglas C-74 Globemaster was a United States heavy-lift cargo aircraft built by the Douglas Aircraft Company in Long Beach, California. |
The Martin JRM Mars is a retired large, four-engined cargo transport flying boat designed and built by the Martin Company for the United States Navy (US Navy). |
| ICAO Code |
|
MARS |
| First Flight |
1945-09-05 |
1942-06-23 |
| Entry Into service |
|
1943-11-30 |
| Production End |
1947-01-01 |
1948-01-01 |
| Service End |
1969-01-01 |
1956-01-01 |
| Designer |
Douglas Aircraft Corporation |
Glenn L. Martin Company |
| Type |
Strategic airlifter |
Flying boat |
| Length (m) |
37.7952 |
35.6616 |
| Height (m) |
13.1064 |
11.5824 |
| Cockpit Crew |
13 |
|
| Max Seating |
125 |
133 |
| Max Speed (km/h) |
527.8648 |
355.665 |
| Cruise Speed (km/h) |
341.1809 |
305.7754 |
| Max Ceiling (m) |
6492.24 |
4450.08 |
| Rate of Climb (m/s) |
13.2334 |
|
| Capacity Description |
125 troops, 115 stretchers with medical staff, or up to 48150 lb of cargo |
JRM Mars - 133 troops, or 84 litter patients and 25 attendants or 32,000 lb payload, including up to seven Willys MB jeeps; Water/foam load: Mars waterbomber - 60,000 lb |
| National Origin |
|
United States of America |
| Number Built |
14 |
7 |
| Powerplant Description |
4 × Pratt & Whitney R-4360-69 Wasp Major /-29s /-49s 28-cylinder air-cooled 4-row radial piston engines, 2424 kW (3250 hp) each |
4 × Wright R-3350 Duplex-Cyclone 18-cylinder radial engines, 1864 kW (2500 hp) each |
| Primary Users |
United States Army Air Forces, United States Air Force |
United States Navy (historical), Forest Industries Flying Tankers (FIFT) (historical); Coulson Aviation (historical) |
| Status |
Retired – 1959 (military), 1969 (civilian) |
Retired |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/Douglas_C-74_Globemaster |
en.wikipedia.org/wiki/Martin_JRM_Mars |
| Flat Wing Span (m) |
52.7304 |
60.96 |
| Flat Wing Area (m²) |
233.1866 |
342.4406 |
| Wake Category |
|
M |
| Aircraft Engine |
|
Wright R-3350 Duplex-Cyclone |
| Number of Engines |
4 |
4 |