“Boeing TB”的意思、由来-开放百科全书

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Boeing TB

释义

Development and design
Specifications
References

name=TB

image=

caption=

}}{{Infobox Aircraft Type

type=Torpedo bomber

manufacturer=Boeing

designer=

first flight=4 May 1927^[1]

introduced=

retired=

status=

primary user=

more users=

produced=

developed from=Martin T3M

number built=3

program cost=$199,000

variants with their own articles=
}}

The Boeing TB (or Model 63) was an American torpedo bomber biplane designed by the US Navy and built by Boeing in 1927.

Development and design

The TB was an improved version of the Martin T3M. It was constructed of all dural, with a fabric covering. The equal-span wings were large and unstaggered, and could be folded aft, reducing the span to {{convert|21|ft|8|in|m}} for storage. The wheeled undercarriage was a conventional configuration that could be interchanged with floats. As a landplane, the main gear units carried twin wheels. The underside of the fuselage incorporated a glazed station for the bombardier.^[1]

Even before the three XTB-1s were delivered, the Navy's Bureau of Aeronautics had changed its opinion about what was needed in a torpedo bomber, and based on experience with the NAF XTN-1 had decided that a twin-engine aircraft would better suit the role. Having thus been made redundant, no TBs past the three prototypes were built.^[1]

Specifications

{{aerospecs
|ref={{harvnb|Bowers|1966|p=63}}
|met or eng?=eng
|crew=Three - pilot, gunner, and bombardier
|capacity=
|length m=12.45
|length ft=40
|length in=10
|span m=16.76
|span ft=55
|span in=0
|height m=4.12
|height ft=13
|height in=6
|wing area sqm=80.6
|wing area sqft=868
|empty weight kg=2,558
|empty weight lb=5,640
|gross weight kg=4,339
|gross weight lb=9,786
|eng1 number=1
|eng1 type=Packard 3A-2500
|eng1 kw=544
|eng1 hp=730
|eng2 number=
|eng2 type=
|eng2 kw=
|eng2 hp=
|max speed kmh=185
|max speed mph=115
|cruise speed kmh=
|cruise speed mph=
|range km=1,413
|range miles=878
|endurance h=
|endurance min=
|ceiling m=3,810
|ceiling ft=12,500
|climb rate ms=3.8
|climb rate ftmin=754
|armament1=1 × fixed, forward-firing .30 in (7.62 mm) M1919 Browning machine gun
|armament2=1 × trainable, rearward-firing .30 in (7.62 mm) Browning machine gun
|armament3=1 × Bliss-Leavitt torpedo
|armament4=
|armament5=
|armament6=
}}{{aircontent
|related=
|similar aircraft=
|lists=
|see also=
}}

References

1. ^¹²{{harvnb|Bowers|1966|p=63}}

{{Cite book |last= Bowers |first= Peter M. |title=Boeing aircraft since 1916 | place=London |publisher=Putnam Aeronautical Books |year=1966|ref=harv}}
{{cite book |last= Taylor |first= Michael J. H. |title=Jane's Encyclopedia of Aviation |year=1989 |publisher=Studio Editions |location=London |page=170 |ref=harv}}
{{cite book |title=World Aircraft Information Files |publisher=Bright Star Publishing|location=London |pages=File 890 Sheet 52 |ref=harv}}

4 : United States bomber aircraft 1920–1929|Boeing military aircraft|Single-engined tractor aircraft|Biplanes

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