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Keystone LB-6
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| Keystone LB-6 | |
|---|---|
| Type | Light biplane bomber |
| Manufacturer | Keystone Aircraft |
| Maiden flight | 1927 |
| Primary user | United States Army Air Corps |
| Number built | 17 (LB-6) 18 (LB-7) |
The Keystone LB-6 was an 1920s American light bomber built by the Keystone Aircraft company for the United States Army Air Corps. It was called the Panther by the company but it was not an official Army name.
Development
The LB-6 was a version of the earlier LB-5 with revised extended-span wings and powered by two 525hp (391kW) Pratt & Whitney R-1690-3 Hornet engines strut-mounted between the wings. Other variants were built with differing engines.
File:Keystone XLB-12.jpg
XLB-12 protoype
File:Keystone XLB-12 side view.jpg
XLB-12 port-side view
Variants
- XLB-6
- One LB-5 modified for evaluation.
- LB-6
- Production version, 17 built.
- LB-7
- LB-6 with 525hp (391kW) R-1690-3 Hornet engines, 18 built.
- LB-8
- One LB-7 re-engined with 550hp (410kW) R-1830 Twin Wasp engines for evaluation.
- LB-9
- One LB-7 re-engined with 575hp (429kW) GR-1750 Cyclone engines for evaluation.
- XLB-10
- One LB-6 re-engined with 525hp (391kW) R-1690-3 engines.
- LB-10
- Production version of the XLB-10, 63 built, redesignated B-3A before delivery.
- LB-11
- One LB-6 re-engined with 525hp (391kW) R-1750-3s for evaluation.
- LB-11A
- LB-11 re-engined with 525hp (391kW) GR-1750s for evaluation.
- LB-12
- Similar to the LB-7, with 575hp (429kW) R-1830-1s for evaluation.
- LB-13
- Seven aircraft delivered as the Y1B4-1 (5) and Y1B6-1 (2).
- LB-14
- Production version with 575hp (429kW) GR-1830 engines, three delivered as the Y1B5-1.
Operators
Specifications (B-4A)
See also
Related development
Related lists
Lists relating to aviation | |
|---|---|
| General | Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines |
| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
| Notable incidents and accidents | Military aviation · Airliners · General aviation · Famous aviation-related deaths |
| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
References
- John Andrade. U.S.Military Aircraft Designations and Serials since 1909, p.135. Midland Counties Publications, 1979. ISBN 0 904597 22 9.
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), p.2255. Orbis Publishing, 1985.
Lists relating to aviation | |
|---|---|
| General | Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines |
| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
| Notable incidents and accidents | Military aviation · Airliners · General aviation · Famous aviation-related deaths |
| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Keystone LB-6". |
