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词条 Breda Ba.46
释义

  1. Design and development

  2. Specifications

  3. References

  4. External links

name=Ba.46 image=Breda 46 San Diego Air & Space Museum 2.jpg caption=

}}{{Infobox Aircraft Type

 type=Combined troop transport and bomber national origin=Italy manufacturer=Società Italiana Ernesto Breda designer= first flight=1934 introduced= retired= status= primary user= more users= produced= number built=1 program cost= unit cost= developed from= variants with their own articles=
}}

The Breda Ba.46 was a three engined Italian bomber transport, developed from a similar but lower powered civil transport. It was designed in Italy in the mid-1930s for colonial policing but not put into production.

Design and development

The Breda Ba.46, which first flew in 1934, was a military development of the Ba.32 8-11 seat airliner from two years earlier. The Ba.46 was designed to fill a colonial policing rôle with an aircraft capable both of bombing and troop transportation. Troop/bombload mixtures could range from 12 men and 1,000 kg (2,200 lb) of bombs of weights 100 kg (220 lb), 250 kg (550 lb) and 500 kg (1,100 lb), up to a maximum bombload of 2,000 kg (4,400 lb) without troops.

Both the Ba.32 and Ba.46 were three engine, cantilever low wing monoplanes with fixed, conventional undercarriages. Since the Ba.46's military equipment, chiefly bombs and defensive armament, raised the all-up weight by some 45%, it was re-engined with 650 hp (485 kW) Alfa Romeo-built Bristol Pegasus radials which provided more than twice the power of the Ba.32's Pratt and Whitney Wasp Juniors. Wing span and area were also increased, by 12% and 22% respectively. Other dimensions remained the same. As a result, the Ba.46 was quicker both in level flight and particularly in the climb, reaching 5,000 m in 18 minutes rather than the B.32's 52 minutes.

The cockpit of the Ba.46 was enclosed and the fuselage had side windows. There were four machine gun positions, two dorsal and two ventral. Bombs were stored internally, each weight in its own bay and above separate doors. The Ba.46 had a braced tailplane positioned on top of the fuselage and a single fin. The wide spaced mainwheels were spatted; the outer engines were faired with Townend rings, the central one remaining uncowled.

The Breda Ba.46 made its first flight in 1934, by which time the company's focus had moved to more modern, retractable undercarriage and single purpose bomber designs for European wars; there was no further development.

Specifications

{{Aircraft specs
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|genhide=
|crew=
|capacity=12 troops
|length m=16.75
|length ft=
|length in=
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|span m=30.00
|height m=
|height ft=13
|height in=7.5
|height note=
|wing area sqft=1119
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|aspect ratio=
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|empty weight lb=12100
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|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight lb=20460
|max takeoff weight note=
|fuel capacity=
|more general=


|eng1 number=3
|eng1 name=Alfa Romeo 125 RC.35 (licence built Bristol Pegasus)
|eng1 type=radial
|eng1 hp=650
|power original=
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|perfhide=
|max speed mph=196
|max speed note= at 5,000 m (16,400 ft)
|cruise speed kmh=
|cruise speed mph=161
|cruise speed kts=
|cruise speed note= at 3,000 m (9,840 ft)
|stall speed kmh=
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
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|never exceed speed kts=
|never exceed speed note=
|minimum control speed kmh=
|minimum control speed mph=
|minimum control speed kts=
|minimum control speed note=
|range km=
|range miles=1243
|range nmi=
|range note=with 1,000 kg (2,200 lb) bombload and no troops.
|combat range km=
|combat range miles=
|combat range nmi=
|combat range note=
|ferry range km=
|ferry range miles=
|ferry range nmi=
|ferry range note=
|endurance=
|ceiling ft=25360
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=18 min to 5,000 m (16,400 ft)
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|power/mass=
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|guns=3 positions, dorsal forward and ventral forward and aft, each with 1 7.7 mm (0.303 in) Breda-SAFAT machine guns, plus 1 rear upper position with either 2× 7.7 mm (0.303 in) or 1× 12. mm (0.5 in) guns.
|bombs=2,000 kg (4,400 lb) with no troops; 1,000 kg (2,200 lb) with 12 troops
|other armament=
|avionics=
}}{{aircontent
|see also=
|related=
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}}

References


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External links

{{commons category|Breda Ba.46}}{{Breda aircraft}}

5 : Italian bomber aircraft 1930–1939|Breda aircraft|Trimotors|Low-wing aircraft|Aircraft first flown in 1934
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