View source for PZL.48 Lampart

{{Infobox aircraft
 |name = PZL.48 Lampart
 |image =
 |caption = 
 |type = [[Fighter-bomber]] aircraft
 |manufacturer =[[Państwowe Zakłady Lotnicze]]
 |designer =
 |first_flight = 
 |introduction =
 |retired =
 |status = Project
 |primary_user = [[Polish Air Force]] (planned)
 |produced = 
 |number_built = Incomplete prototype
 |unit cost =
 |developed_from = [[PZL.38 Wilk]]
 |variants = [[PZL.54 Ryś]]
}}

The '''PZL.48 Lampart''' (''leopard'') was a Polish heavy [[fighter-bomber]] design, that remained only a project, owing to the outbreak of [[World War II]].

==Design and development==
The PZL.48 was a development of the heavy fighter-bomber [[PZL.38 Wilk]], designed by [[Franciszek Misztal]]. Owing to problems with PZL.38's [[PZL Foka]] V8 engines and the excessive weight of the prototype it was decided in 1938 to build a variant of the plane using more powerful radial engines, named PZL.48 Lampart. Despite the new plane appearing almost identical to the PZL.38, apart from the engines, it was, in fact, redesigned in order to decrease weight. French 640&nbsp;hp [[Gnome-Rhône 14M]] engines of small diameter were chosen.

The building of a prototype started in 1939, but by the summer of 1939, only a wing had been made, while the fuselage was still under construction. It was planned to carry out static trials in Autumn 1939 and to fly the prototype in the first half of 1940. Further plans were to produce 110 Lamparts for the Polish Air Force in 1941. Owing to the [[Invasion of Poland (1939)|German invasion]] on 1 September 1939, all plans were cancelled.

In early 1939 Misztal also worked out the initial design of the [[PZL.54 Ryś]]—a development of the PZL.48 with Hispano-Suiza  12L in-line engines.

==Operators (planned)==
;{{POL}}
*[[Polish Air Force]]

==Specification==
It was a twin-engine low-wing cantilever [[monoplane]] of metal construction, metal covered. The fuselage was semi-[[monocoque]], elliptic in cross-section. The crew of two—pilot and rear gunner/bombardier/observer—sat under separate canopies, far from each other, fitted with dual controls. The canopy of the pilot's cockpit opened sideways. Three part wing, outer parts built around light closed profiles. Wings fitted with [[Leading edge slats|slats]] and split [[Flap (aircraft)|flaps]]. Twin vertical stabilizers. Engines in underwing nacelles with NACA covers. Retractable [[landing gear]], with main wheels retracting into engine nacelles, and a rear skid. Three-blade variable-pitch propellers. Integral fuel tanks in wings. Armament (planned): two fixed 20&nbsp;mm guns and two 7.92&nbsp;mm PWU wz.36 machine guns in the fuselage nose, twin 7.92&nbsp;mm PWU wz.37 machine guns of a rear gunner, hiding in the fuselage (Lampart A) or 8 fixed machine guns (Lampart B). It could carry 300-kg of bombs.

==Specifications==
{{Aircraft specs
|ref=<!-- reference -->
|prime units?=met
<!--
        General characteristics
-->
|genhide=

|crew=2, pilot, rear gunner/bombardier 
|capacity={{convert|1100|kg|lb|abbr=on|2}} useful load
|length m=8.7
|length ft=
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|length note=
|span m=11.5
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|mid span m=
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|mid span in=
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|lower span m=
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|swept m=<!-- swing-wings -->
|swept ft=<!-- swing-wings -->
|swept in=<!-- swing-wings -->
|swept note=
|dia m=<!-- airships etc -->
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|width m=<!-- if applicable -->
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|height m=2.5
|height ft=
|height in=
|height note=
|wing area sqm=21.5
|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=<!-- sailplanes -->
|airfoil=
|empty weight kg=2400
|empty weight lb=
|empty weight note=
|gross weight kg=3500
|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=2
|eng1 name=[[Gnome-Rhône 14M-07]]
|eng1 type=14-cyl. air-cooled two-row radial engines
|eng1 kw=<!-- prop engines -->
|eng1 hp=730
|eng1 shp=<!-- 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=
|eng2 name=
|eng2 type=
|eng2 kw=<!-- prop engines -->
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|eng2 shp=<!-- prop engines -->
|eng2 kn=<!-- jet/rocket engines -->
|eng2 lbf=<!-- jet/rocket engines -->
|eng2 note=
|eng2 kn-ab=<!-- afterburners -->
|eng2 lbf-ab=<!-- afterburners -->

|eng3 number=
|eng3 name=
|eng3 type=
|eng3 kw=<!-- prop engines -->
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|eng3 shp=<!-- prop engines -->
|eng3 kn=<!-- jet/rocket engines -->
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|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 dia 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=560
|max speed mph=
|max speed kts=
|max speed note=
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=
|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=1500
|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=10000
|ceiling ft=
|ceiling note=
|g limits=<!-- aerobatic -->
|roll rate=<!-- aerobatic -->
|glide ratio=<!-- sailplanes -->
|climb rate ms=9
|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=154
|wing loading lb/sqft=
|wing loading note=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|thrust/weight=

|more performance=
<!--
        Armament
-->
|armament= 
*2 x {{convert|20|mm|in|abbr=on|3}} [[Nkm wz.38 FK]] cannon fixed in nose
*2 x {{convert|7.92|mm|in|abbr=on|3}} [[PWU wz.36]] machine guns fixed in nose
*2 x {{convert|7.92|mm|in|abbr=on|3}} [[PWU wz.37]] machine guns on a flexible mounting to the rear
*{{convert|300|kg|lb|abbr=on|2}} of bombs 
|guns= 
|bombs= 
|rockets= 
|missiles= 
|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
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|hardpoint other=

|avionics=
}}

==PZL.54 Ryś==
{{Infobox aircraft
  |name = PZL.54 Ryś
  |image =
  |caption = 

  |type = [[Fighter-bomber]] aircraft
  |manufacturer =[[Państwowe Zakłady Lotnicze]]
  |designer =
  |first_flight = 
  |introduction =
  |retired =
  |status = Project
  |primary_user = [[Polish Air Force]] (planned)
  |produced = -
  |number_built = -
  |unit cost =
  |developed_from = PZL.48 Lampart
  |variants =
}}
|}
The '''PZL.54 Ryś''' (''lynx'') was a pre-war [[Poland|Polish]] [[heavy fighter]] design developed in 1939 by the [[Państwowe Zakłady Lotnicze|PZL]] company. Although intended as an evolution (and a replacement of) the PZL.48 Lampart, it never went beyond drawing boards due to [[Invasion of Poland]] and the outbreak of [[World War II]]. The aircraft was to be equipped with more powerful [[Hispano Suiza]] [[Hispano Suiza 12Z|12Z]] inline engines, and was slated to become one of the basic [[fighter-bomber]]s of the [[Polish Army]]. Heavier than its predecessors due to larger and heavier engine, the PZL.54 was to be faster, feature a higher bombload (with heavier 500&nbsp;kg bombs mounted under the fuselage) and operational range. While primarily designed as a heavy fighter, thanks to its strong armament the aircraft was to be also suitable as a bomber or fighter-bomber.

The aircraft was to be an all-metal ([[duraluminium]]) low-wing monoplane, with a classic retractable [[landing gear]] and a fixed tail wheel. The aerodynamic profile was based on the highly successful [[PZL.37 Łoś]] bomber, including the double tail fins. The aircraft was to be armed with six 7.9&nbsp;mm machine guns (3 in each wing), two 20mm cannon (in the nose) and twin 7.9&nbsp;mm MGs in the rear gunner's station. In addition, the aircraft was to be able to deliver a single 500&nbsp;kg aerial bomb mounted below the fuselage - or a collection of smaller bombs.

The construction of the first prototype was stopped by the outbreak of the [[Invasion of Poland (1939)|Polish Defensive War]]. While the design looked promising, the PZL.54 was based around the new Hispano-Suiza engines that at the time were still under development and could deliver only 1000 out of planned 1600 [[horsepower]].

==References==
{{Reflist}}

*Andrzej Glass: "Polskie konstrukcje lotnicze 1893-1939" (''Polish aviation constructions 1893-1939''), WKiŁ, Warsaw 1977 (Polish language, no ISBN)

==See also==
{{aircontent|
 |related =
*[[PZL.38 Wilk]]

 |similar aircraft =
*[[Messerschmitt Bf 110]]
*[[Potez 630]]
*[[Fokker G.I]]
*[[Kawasaki Ki-45]]
*[[Fw 187]]
 |lists =<!-- related lists -->

 |see also =<!-- other relevant information -->
}}

{{PZL aircraft}}

[[Category:1930s Polish fighter aircraft]]
[[Category:PZL aircraft]]
[[Category:Twin piston-engined tractor aircraft]]
[[Category:Aircraft with retractable conventional landing gear]]
[[Category:Low-wing aircraft]]