- Design and development
- Specifications
- References
| name=LFG Roland D.XVII | image=LFG Roland D.XVII front.jpg | caption= }}{{Infobox Aircraft Type | type=Single-seat fighter aircraft | national origin=Germany | manufacturer=LFG Roland (Luft-Fahrzeug-Gesellschaft) | designer= | first flight=October 1918 | introduced= | retired= | status= | primary user= | more users= | produced= | number built=1 | program cost= | unit cost= | developed from= | variants with their own articles=
}} |
The LFG Roland D.XVII was a single-seat, single-engine, parasol wing German fighter aircraft flown close to the end of World War I. Only one was built. Design and developmentThe D.XVII was the last of LFG's line of single-seat fighters. It combined features of their previous two models, the D.XV and D.XVI: it had the engine and fuselage of the third D.XV but was a parasol wing aircraft like the D.XVI.[[2]] Despite the common configuration the wings of the D.XVI and D.XVII were different. The D.XVIIs wings had constant chord and overhung ailerons. It was mounted over the fuselage on each side with an inverted V-form strut pair from the leading edge to the lower fuselage longeron and a second strut from the rear wing spar to the same longeron further aft. The structure was stabilized laterally with a further outward leaning strut between top of the forward V-strut and the upper fuselage.[[2]] The D.XVII shared the flat-sided, tapered fuselage of the third D.XV, a tailplane mounted to the rear horizontal knife edge, a small fin and an almost semicircular rudder which was entirely above the tailplane. The D.XVII was powered by a {{convert|185|hp|kW|abbr=on|0|disp=flip}} BMW IIIa six cylinder, water-cooled inline engine driving a two-bladed propeller. The fixed conventional undercarriage was standard for the time, with a rigid axle mounted to V-struts attached to the lower fuselage longerons, plus a tailskid faired into a small ventral fin.[[2]] The D.XVII was rolled out on 18 October 1918 in time for the third D-type competition held at Adlershof that month but was judged inferior to the Fokker V 29, another parasol wing, BMW III powered design. The Roland's wing oscillated in turns and stalled without warning at low speeds. Specifications{{Aircraft specs
|ref=Green & Swanborough p.340
|prime units?=met
|genhide=
|crew=One
|length m=
|length note=
|span m=
|span note=
|width note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight kg=
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity=
|more general=
|eng1 number=1
|eng1 name=BMW IIIa
|eng1 type=6-cylinder water-cooled inline
|eng1 hp=185
|eng1 note=
|power original=
|more power=
|prop blade number=2
|prop name=
|prop dia m=
|prop dia ft=
|prop dia in=
|prop dia note=
|perfhide=Y
|max speed kmh=
|max speed mph=
|max speed kts=
|max speed note=
|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=
|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=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2
|wing loading lb/sqft=
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|guns=2 × synchronised {{convert|7.9|mm|in|abbr=on|2}} LMG 08/15 (Spandau) machine guns
}}{{aircontent
|see also=
|related=
|similar aircraft=
|lists=
}}
References{{commons category|LFG Roland D.XVII}}1. ^1 2 3 {{cite book |title=German Aircraft of the First World War|last=Gray |first=Peter|last2=Thetford|first2=Owen |year=1970|publisher= Putnam|location=London|isbn=0-85177-809-7|pages=462}}
}}{{LFG aircraft}} 3 : Parasol-wing aircraft|German fighter aircraft 1910–1919|LFG aircraft |