Lioré et Olivier LeO 12

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The Lioré et Olivier LeO 12 was a night bomber built in France in 1924.Taylor 1989, 578] It was a large biplane of conventional design, with three-bay equal-span wings and twin engines mounted in nacelles on struts in the interplane gap. The independent main undercarriage units were faired in long, trouser-style spats. Construction throughout was mainly duralumin, skinned in fabric. The pilot's cockpit was open, and there was a second cockpit amidships for a gunner.

When the Aéronautique Militaire was not interested in the type, three of the four examples built were modified for other roles. One became a 12-seat passenger transport that Lioré et Olivier operated on an airline subsidiary, another had its cockpit and gunner's hatch enclosed and was used by the French air ministry as an experimental testbed, and the third received new engines and better defensive armament and was again demonstrated to the army. The reception to this type, the LeO 122, was barely more enthusiastic, but Lioré et Olivier used it as the basis for further development work that would result in the successful LeO 20.

Variants

* LeO 12 - prototype night bomber version with Lorraine-Dietrich 12Db engines (4 built)
* LeO 121 - 12-seat airliner (1 converted from LeO 12)
* LeO 122 - improved night bomber prototype with Gnome-Rhône 9Ab engines and extended "balcony" on nose for second gunner (1 converted from LeO 12)
* LeO 123 - testbed with enclosed cockpits (1 converted from LeO 12)

pecifications (LeO 12)

aerospecs
ref=
met or eng?= met

crew=Two, pilot and gunner
capacity=
length m=12.00
length ft=39
length in=4
span m=21.50
span ft=70
span in=6
swept m=
swept ft=
swept in=
rot number=
rot dia m=
rot dia ft=
rot dia in=
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=4.70
height ft=15
height in=5
wing area sqm=100.0
wing area sqft=1,076
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio=
wing profile=
empty weight kg=2,500
empty weight lb=5,500
gross weight kg=4,600
gross weight lb=10,120
lift kg=
lift lb=

eng1 number=2
eng1 type=Lorraine-Dietrich 12Db
eng1 kw= 300
eng1 hp= 400
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
eng2 number=
eng2 type=
eng2 kw=
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eng2 kn-ab=
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max speed kmh=190
max speed mph=120
max speed mach=
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stall speed kmh=
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range km=
range miles=
endurance h=
endurance min=
ceiling m=
ceiling ft=
g limits=
roll rate=
glide ratio=
climb rate ms=
climb rate ftmin=
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armament1=
armament2=
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armament6= aircontent
see also=
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Notes

References

*
* [http://www.aviafrance.com/165.htm aviafrance.com]
* [http://www.airwar.ru/enc/bww1/leo122.html Уголок неба]