# RWD 6
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{{Short description|Polish sports plane of 1932}}
{{Infobox aircraft
|name =RWD 6
|image =RWD 6.jpg
|caption =RWD 6 of Franciszek Zwirko during a short take-off trial at the Challenge 1932
|type =Sports plane
|manufacturer =[Warsaw University of Technology](/source/Warsaw_University_of_Technology) workshops
|designer = [RWD](/source/RWD_(aircraft_manufacturer)) team
|first_flight =3 June 1932
|introduction =1932
|retired =1935
|status =
|primary_user =Polish civilian aviation
|more_users =
|produced =
|number_built =3
|unit cost =
|variants =
}}
The '''RWD 6''' was a Polish sports plane of [1932](/source/1932_in_aviation), constructed by the [RWD](/source/RWD_(aircraft_manufacturer)) team. It was a winner of the [Challenge 1932](/source/Challenge_1932) international tourist aircraft contest.
==Development==
The aircraft was designed specially for the purpose of competing in the international tourist aircraft contest Challenge, which RWD attended in [1930](/source/Challenge_1930), without major success. It was constructed by the RWD team of [Stanislaw Rogalski](/source/Stanislaw_Rogalski), [Stanislaw Wigura](/source/Stanislaw_Wigura) and [Jerzy Drzewiecki](/source/Jerzy_Drzewiecki) in the workshops of Students' Mechanical Club of Warsaw University of Technology (their designs were named RWD after their initial letters). The new plane differed from previous RWD designs, having a cab with two seats next to each other, folding wings and good wing mechanization ([slats](/source/Leading_edge_slats) and [flap](/source/Flap_(aircraft))s).
Only three aircraft were built, the first one was flown on June 3, 1932, by its designer Jerzy Drzewiecki. The aircraft were given civilian registrations SP-AHL, SP-AHM and SP-AHN. During trials, SP-AHM crashed and Drzewiecki was hurt. After some modification of the tail, the two remaining RWD 6s were sent to the Challenge contest.
[Challenge 1932](/source/Challenge_1932), held between August 11–28, 1932, was eventually won by [Franciszek Żwirko](/source/Franciszek_%C5%BBwirko) (pilot) and [Stanisław Wigura](/source/Stanis%C5%82aw_Wigura) (mechanic) in their RWD 6 SP-AHN, with a start number O6. The other RWD 6, flown by Tadeusz Karpiński, took ninth place out of 43 competitors (SP-AHL, nr. O4). During contest, the RWD 6 was given the highest scores for technical evaluation of all participating aircraft.
On September 11, 1932, the RWD 6 SP-AHN with Franciszek Żwirko and Stanisław Wigura aboard, crashed during a storm while flying to an air meeting in Czechoslovakia. Both died. The cause was found to be weak wing mountings, that caused wing warping at higher speeds. The last remaining RWD 6 (SP-AHL) was modified after this accident, receiving a strengthened wing with V-shaped [strut](/source/strut)s and the new designation '''RWD 6bis'''. The RWD 6bis was completed and flown in September 1933. In [1935](/source/1935_in_aviation) it was broken up, and its fuselage was used to create the [RWD 13](/source/RWD_13) touring plane prototype. A direct development of the RWD 6 as a sport plane was a four-seater [RWD 9](/source/RWD_9), a winner of the [Challenge 1934](/source/Challenge_1934).
==Description==
The RWD 6 was a two-seater sports and touring [strut](/source/strut)ted high-wing [monoplane](/source/monoplane) of a mixed construction. A metal frame fuselage covered with [canvas](/source/canvas), with the engine clad in [aluminium](/source/aluminium) sheets. It had rectangular single-spar wing of wooden construction, canvas and plywood covered. Its wings folded rearwards, and were equipped with automatic [slats](/source/Leading_edge_slats) and [flap](/source/Flap_(aircraft))s. Closed cabin with two seats side-by-side, with dual controls. The cabin had a pair of doors. 7-cylinder [Armstrong Siddeley Genet Major](/source/Armstrong_Siddeley_Genet_Major) [radial engine](/source/radial_engine) of 104 kW (140 hp) (119 kW, 160 hp start power). Two-blade metal propeller. Conventional [landing gear](/source/landing_gear), with a rear skid. Fuel tanks in wings (140 L, 34 US gal). Take-off: 111 m (to altitude 8 m), landing: 106 m (from altitude 8 m – best results from the Challenge contest).
==Specifications==
thumb|RWD 6 3 view from l'Aerophile magazine, January 1933
250px|right|thumb
{{Aircraft specs
|ref=''Polish aircraft 1893-1939'' [{{cite book |last1=Cynk |first1=Jerzy B |title=Polish aircraft, 1893-1939 |year=1971 |publisher=Putnam |isbn=0-370-00085-4 |pages=[https://archive.org/details/polishaircraft1800cynk/page/504 504-510] |url=https://archive.org/details/polishaircraft1800cynk/page/504 }}]
|prime units?=met
|crew=2
|capacity=2
|length m=6.6
|length note=
|span m=11
|span note=
|height m=2.07
|height note=
|wing area sqm=16
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=475
|empty weight note=
|gross weight kg=750
|gross weight note=
|max takeoff weight kg=
|max takeoff weight note=
|fuel capacity={{cvt|140|L|USgal impgal}} in two wing tanks
|more general=
|eng1 number=1
|eng1 name=[Armstrong Siddeley Genet Major](/source/Armstrong_Siddeley_Genet_Major)
|eng1 type=7-cylinder air-cooled radial piston engine
|eng1 hp=160
|eng1 note=
|prop blade number=2
|prop name=adjustable-pitch metal propeller
|prop dia m=
|prop dia note=
|max speed kmh=225
|max speed note=at sea level
|cruise speed kmh=190
|cruise speed note=
|stall speed kmh=57.6
|stall speed note=
*'''Landing speed:''' {{cvt|60|km/h|mph kn}}
|never exceed speed kmh=
|never exceed speed note=
|range km=650
|range note=
|ferry range km=
|ferry range note=
|endurance=
|ceiling m=6000
|ceiling note=
|g limits=
|roll rate=
|climb rate ms=5.5
|climb rate note=
|time to altitude={{cvt|1000|m}} in 3 minutes 20 seconds
|wing loading kg/m2=46.9
|wing loading note=
|fuel consumption kg/km=
|power/mass={{cvt|.0926|hp/lb|order=flip}}
|more performance=
|avionics=
}}
==See also==
{{Aircontent
|related=
*[RWD 9](/source/RWD_9)
*[RWD 13](/source/RWD_13)
|similar aircraft=
|lists=
|see also=
}}
==References==
{{reflist}}
==Further reading==
{{commons category|RWD 6}}
*{{cite book|last1=Glass|first1=Andrzej|title=Polskie konstrukcje lotnicze 1893–1939|date=1977|publisher=WKiŁ|location=Warsaw|language=pl}}
{{RWD aircraft}}
RWD 06
RWD 06
Category:Single-engined tractor aircraft
Category:High-wing aircraft
Category:Aircraft first flown in 1932
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Adapted from the Wikipedia article [RWD 6](https://en.wikipedia.org/wiki/RWD_6) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/RWD_6?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.