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gptkbp:instanceOf
|
gptkb:bomber
|
|
gptkbp:armament
|
5 × .30 in machine guns
|
|
gptkbp:bombLoad
|
2,000 lb
|
|
gptkbp:category
|
gptkb:aircraft
military aircraft of the United States
|
|
gptkbp:crew
|
4
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|
gptkbp:emptyWeight
|
7,100 lb
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|
gptkbp:enginePower
|
400 hp each
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|
gptkbp:firstFlight
|
1920
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gptkbp:height
|
14 ft 7 in
|
|
gptkbp:introduced
|
1920
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|
gptkbp:length
|
44 ft 9 in
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|
gptkbp:manufacturer
|
gptkb:Glenn_L._Martin_Company
|
|
gptkbp:maximumSpeed
|
99 mph
|
|
gptkbp:notableEvent
|
used in Billy Mitchell's 1921 bombing tests
|
|
gptkbp:numberBuilt
|
130
|
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gptkbp:powerplant
|
2 × Liberty L-12 V12 engines
|
|
gptkbp:predecessor
|
gptkb:Handley_Page_O/400
|
|
gptkbp:primaryUser
|
United States Army Air Service
|
|
gptkbp:range
|
550 mi
|
|
gptkbp:retired
|
1929
|
|
gptkbp:role
|
night bomber
|
|
gptkbp:serviceCeiling
|
10,300 ft
|
|
gptkbp:successor
|
gptkb:Keystone_B-3
|
|
gptkbp:usedBy
|
United States Army Air Service
|
|
gptkbp:weight
|
12,225 lb
|
|
gptkbp:wingspan
|
74 ft 0 in
|
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gptkbp:bfsParent
|
gptkb:Martin_MB-1_bomber
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gptkbp:bfsLayer
|
7
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Martin NBS-1
|