Engineering:Martin XLB-4
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Short description: 1920s proposed American bomber
| XLB-4 | |
|---|---|
| Role | Medium bomber |
| Manufacturer | Martin |
| Status | Paper project only |
| Number built | 0 |
The Martin XLB-4 was a 1920s proposal for a light bomber by the Glenn L. Martin Company.
Design and development
The XLB-4 would have been a biplane bomber of all metal construction, powered by two Pratt & Whitney R-1690 Hornet radial engines. The United States Army Air Corps (USAAC) ordered a single prototype serialled 27-332, but the aircraft was cancelled because the USAAC leadership was lukewarm about experimenting with all-metal aircraft.[1][2]
Specifications (XLB-4 estimated)
General characteristics
- Crew: 5
- Length: 44 ft 8 in (13.61 m)
- Wingspan: 76 ft (23 m)
- Height: 16 ft 7 in (5.06 m)
- Wing area: 1,203.0 sq ft (111.76 m2)
- Empty weight: 5,891 lb (2,672 kg)
- Gross weight: 11,982 lb (5,435 kg)
- Powerplant: 2 × Pratt & Whitney R-1690 Hornet 9-cylinder air-cooled radial piston engines, 525 hp (391 kW) each
Performance
- Maximum speed: 69 mph (111 km/h, 60 kn)
- Wing loading: 9.98 lb/sq ft (48.7 kg/m2)
See also
Related development
Aircraft of comparable role, configuration and era
- Curtiss B-2 Condor
- Fokker XLB-2
- Huff-Daland XHB-1
- Sikorsky S-37
Related lists
- List of bomber aircraft
- List of military aircraft of the United States
References
- ↑ Wagner, Ray (23 March 1982). American combat planes (3d, enl. ed.). Doubleday. ISBN 9780385131209. https://archive.org/details/americancombatpl0000wagn.
- ↑ Baugher, Joe. "Martin XLB-4". http://www.joebaugher.com/usaf_bombers/lb4.html. Retrieved 30 January 2019.
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