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<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
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{{Unreferenced|date=December 2011}}
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
|name=PZL.3
|name=PZL.3
|image=Image:PZL-3.jpg
|image=Image:PZL-3.jpg
|caption=PZL.3
|caption=P.Z.L. 3 drawing
}}{{Infobox Aircraft Type
}}{{Infobox Aircraft Type
|type=Bomber
|type=Bomber
|manufacturer=[[PZL]]
|manufacturer=[[P.Z.L.]]
|designer= [[Władysław Zalewski]]<ref name="Cynk">{{cite book|last=Cynk|first=Jerzy B.|title=Polish Aircraft 1893-1939|publisher=Putnam & Company Ltd.|location=London|date=1971|isbn=0 370 00085 4}}</ref>
|designer= Władysław Zalewski
|first flight=
|first flight=
|introduced=
|introduced=
|retired=
|retired=
|status= project
|status= project
|primary user= [[Polish Air Force]]
|primary user=
|more users=
|more users=
|produced=
|produced=
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|}
|}


The '''[[PZL]].3''' was a [[Poland|Polish]] project of a four-engine [[heavy bomber]], designed by [[Władysław Zalewski]] in years 1928-1930 in [[PZL]].
The '''[[P.Z.L. 3]]''' was a [[Polish]] project for a four-engine [[heavy bomber]], designed by [[Władysław Zalewski]] from 1928-1930 at [[P.Z.L.]] (''Państwowe Zakłady Lotnicze'' - National Aviation Establishments).<ref name="Cynk"/>


==Design and development==
==Design and development==
At the time of the formation of P.Z.L. the [[Department of Aeronautics]] gave the nascent design office the task of designing a heavy bomber. Drawing heavily on his 1924 [[WZ-IX Pteranodon]] bomber, Zalewski was given the task as designer. During the winter of 1928-29 the detailed design of the P.Z.L. 3 bomber took shape, emerging as a large aircraft powered by four {{convert|500|hp|abbr=on}} [[Bristol Jupiter]] engines mounted in tandem in nacelles on pylons above the wings. Due to the dire economic situation at the start of the 1930s and the expected hagh costs, funds for construction of a prototype were not forthcoming so the project was dropped.<ref name="Cynk"/>
The project of '''PZL.3''' was made due todemend of [[Polish Air Force]] for the new bomber plane. Zalewskis' design development of [[WZ-IX Pteranodon]] bomber. Ine the first version aircraft should have two pushing and two pulling engines. Later this concept was rejected as a result of technical problems. Although the positive analysis of the design, the project was dismissed due to too high costs in 1930. Some assumptiona od this project was later used in [[PZL.37 Łoś]]. In 1933 the twin-simillar [[Potez 41 BN4]]. construction was made.


The P.Z.L. 3 would have been a low-wing cantilever monoplane with four engines in push-pull tandem nacelles over the wings mounted on pylons. Built with a semi-monocoque stressed skin fuselage skinned with [[Duralumin]] skinning and structural parts,the P.Z.L. 3 would have had twin fins and a trousered fixed tail-wheel undercarriage. Armament would have included 3 machine-guns and up to {{convert|3,000|kg|abbr=on}} of bombs.<ref name="Cynk"/>
==Technical design==
Four engine, low-wing aircraft with double vertical tail. Propulsion should be four [[Bristol]] "Jupiter" engines (520 hp each one). The project has characteristic, modern, duralumin craft. The plane should be relativety heavily armed (3 machine guns)and could carry 3000 kg of bombs.


After the P.Z.L. 3 was rejected Zalewski left P.Z.L. and refused to work on Government sponsored projects thereafter.<ref name="Cynk"/>
==Operational history==
<!-- ==Operational history== -->
The bomber never got beyond the phase of the project.
<!-- ==Variants== -->
<!-- ==Units using this aircraft/Operators (choose)== -->
==Specifications==
{{Aircraft specs
|ref=Polish Aircraft 1893-1939<ref name="Cynk"/><!-- for giving the reference for the data -->
|prime units?=<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, met(ric) first for all others. You MUST choose a format, or no specifications will show -->
<!--
General characteristics
-->
|genhide=


|crew=4
==Variants==
|capacity=
;PZL.3
|length m=22
:four-engine bomber, project.
|length ft=
|length in=
|length note=
|span m=36
|span ft=
|span in=
|span note=
|upper span m=
|upper span ft=
|upper span in=
|upper span note=
|mid span m=
|mid span ft=
|mid span in=
|mid span note=
|lower span m=
|lower span ft=
|lower span in=
|lower span note=
|swept m=<!-- swing-wings -->
|swept ft=<!-- swing-wings -->
|swept in=<!-- swing-wings -->
|swept note=
|dia m=<!-- airships etc -->
|dia ft=<!-- airships etc -->
|dia in=<!-- airships etc -->
|dia note=
|width m=<!-- if applicable -->
|width ft=<!-- if applicable -->
|width in=<!-- if applicable -->
|width note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=
|wing area note=
|swept area sqm=<!-- swing-wings -->
|swept area sqft=<!-- swing-wings -->
|swept area note=
|volume m3=<!-- lighter-than-air -->
|volume ft3=<!-- lighter-than-air -->
|volume note=
|aspect ratio=<!-- give where relevant eg sailplanes -->
|airfoil=
|empty weight kg=7,500
|empty weight lb=
|empty weight note=
|gross weight kg=12,500
|gross weight lb=
|gross weight note=
|max takeoff weight kg=
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity=
|lift kg=<!-- lighter-than-air -->
|lift lb=<!-- lighter-than-air -->
|lift note=
|more general=
<!--
Powerplant
-->
|eng1 number=4
|eng1 name=[[Bristol Jupiter]]
|eng1 type=9-cyl. Air-cooled radial engines
|eng1 kw=373<!-- prop engines -->
|eng1 hp=<!-- prop engines -->
|eng1 kn=<!-- jet/rocket engines -->
|eng1 lbf=<!-- jet/rocket engines -->
|eng1 note=
|power original=
|thrust original=
|eng1 kn-ab=<!-- afterburners -->
|eng1 lbf-ab=<!-- afterburners -->


|eng2 number=
==Operators==
|eng2 name=
'''{{POL}}'''
|eng2 type=
|eng2 kw=<!-- prop engines -->
|eng2 hp=<!-- prop engines -->
|eng2 kn=<!-- jet/rocket engines -->
|eng2 lbf=<!-- jet/rocket engines -->
|eng2 note=
|eng2 kn-ab=<!-- afterburners -->
|eng2 lbf-ab=<!-- afterburners -->


|eng3 number=
[[Polish Air Force]]
|eng3 name=
|eng3 type=
|eng3 kw=<!-- prop engines -->
|eng3 hp=<!-- prop engines -->
|eng3 kn=<!-- jet/rocket engines -->
|eng3 lbf=<!-- jet/rocket engines -->
|eng3 note=
|eng3 kn-ab=<!-- afterburners -->
|eng3 lbf-ab=<!-- afterburners -->
|more power=

|prop blade number=<!-- propeller aircraft -->
|prop name=
|prop dia m=<!-- propeller aircraft -->
|prop dia ft=<!-- propeller aircraft -->
|prop dia in=<!-- propeller aircraft -->
|prop note=

|rot number=<!-- helicopters -->
|rot dia m=<!-- helicopters -->
|rot dia ft=<!-- helicopters -->
|rot dia in=<!-- helicopters -->
|rot area sqm=<!-- helicopters -->
|rot area sqft=<!-- helicopters -->
|rot area note=
<!--
Performance
-->
|perfhide=

|max speed kmh=280
|max speed mph=
|max speed kts=
|max speed note= at sea level
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=<!-- aerobatic -->
|stall speed mph=<!-- aerobatic -->
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|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=
|range nmi=
|range note=
|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=<!-- if range unknown -->
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=<!-- aerobatic -->
|roll rate=<!-- aerobatic -->
|glide ratio=<!-- sailplanes -->
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|sink rate ms=<!-- sailplanes -->
|sink rate ftmin=<!-- sailplanes -->
|sink rate note=
|lift to drag=
|wing loading kg/m2=73.6
|wing loading lb/sqft=
|wing loading note=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=

|power/mass=0.16 hp/kg
|thrust/weight=


==Specifications==
{{Aero specs missing}}
{{aircraft specifications
<!-- if you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
<!-- please answer the following questions -->
|plane or copter?=plane
|jet or prop?=prop
<!-- Now, fill out the specs. Please include units where appropriate (main comes first, alt in parentheses). If an item doesn't apply, like capacity, leave it blank. For instructions on using |ref=, |more general=, |more performance=, |power original=, and |thrust original= see [[Template talk:Airtemp]]. -->
|crew=6
|length main=22 m
|length alt=
|span main=36 m
|span alt=
|height main=8.4 m
|height alt=
|area main=170 m²
|area alt=
|empty weight main=4,500 kg
|empty weight alt=
|loaded weight main=7,500 kg
|loaded weight alt=
|max takeoff weight main=
|max takeoff weight alt=
|more general=
|engine (prop)=[[Bristol Jupiter]]
|type of prop=[[radial engine]]s
|number of props=4
|power main=383 kW
|power alt=520 hp
|max speed main=280 km/h
|max speed alt=
|combat radius main=
|combat radius alt=
|range more=
|range main=
|range alt=
|ceiling main=
|ceiling alt=
|climb rate main=
|climb rate alt=
|loading main=
|loading alt=
|power/mass main=
|power/mass alt=
|more performance=
|more performance=
<!--
|armament=
Armament
*3 x [[machine gun]]: 1 in the nose, 2 in the rear upper station
-->
*Up to 3,500 kg of bombs
|guns= 3x manually aimed machine-guns in nose, dorsal and ventral positions..
|bombs= up to 3,000kg of bombs
|rockets=
|missiles=

|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
|hardpoint bombs=
|hardpoint other=

|other armament=

|avionics=
}}
}}


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== References ==
== References ==
{{REflist}}

{{PZL aircraft}}
{{PZL aircraft}}
{{aviation lists}}
{{aviation lists}}

Revision as of 19:21, 6 December 2011

PZL.3
P.Z.L. 3 drawing
Role Bomber
Manufacturer P.Z.L.
Designer Władysław Zalewski[1]
Status project

The P.Z.L. 3 was a Polish project for a four-engine heavy bomber, designed by Władysław Zalewski from 1928-1930 at P.Z.L. (Państwowe Zakłady Lotnicze - National Aviation Establishments).[1]

Design and development

At the time of the formation of P.Z.L. the Department of Aeronautics gave the nascent design office the task of designing a heavy bomber. Drawing heavily on his 1924 WZ-IX Pteranodon bomber, Zalewski was given the task as designer. During the winter of 1928-29 the detailed design of the P.Z.L. 3 bomber took shape, emerging as a large aircraft powered by four 500 hp (370 kW) Bristol Jupiter engines mounted in tandem in nacelles on pylons above the wings. Due to the dire economic situation at the start of the 1930s and the expected hagh costs, funds for construction of a prototype were not forthcoming so the project was dropped.[1]

The P.Z.L. 3 would have been a low-wing cantilever monoplane with four engines in push-pull tandem nacelles over the wings mounted on pylons. Built with a semi-monocoque stressed skin fuselage skinned with Duralumin skinning and structural parts,the P.Z.L. 3 would have had twin fins and a trousered fixed tail-wheel undercarriage. Armament would have included 3 machine-guns and up to 3,000 kg (6,600 lb) of bombs.[1]

After the P.Z.L. 3 was rejected Zalewski left P.Z.L. and refused to work on Government sponsored projects thereafter.[1]

Specifications

Data from Polish Aircraft 1893-1939[1]

General characteristics

  • Crew: 4

Performance

Armament

  • Guns: 3x manually aimed machine-guns in nose, dorsal and ventral positions..
  • Bombs: up to 3,000kg of bombs

See also

Aircraft of comparable role, configuration, and era

References

Template:REflist

  1. ^ a b c d e f Cynk, Jerzy B. (1971). Polish Aircraft 1893-1939. London: Putnam & Company Ltd. ISBN 0 370 00085 4.