Barber Snark
{{Short description|New Zealand homebuilt aircraft}}
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{{Use New Zealand English|date=April 2022}}
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{{Infobox aircraft begin
| name = Barber Snark | image = File:Condor Scnark HA3-B (1).jpg | caption = }}{{Infobox aircraft type | type = Light aircraft | national origin = New Zealand | manufacturer = homebuilt | designer = Bill Barber | first flight = 1987 | introduction = | retired = | status = Production discontinued | primary user = | more users = | produced = | number built = about 5 | developed from = | variants with their own articles = }} |
File:ZK-JEK NZAR 8861 (9244382019) (3).jpg
File:ZK-JEK NZAR 8871 (9247161258) (3).jpg
File:ZK-JEK NZAR 8867 (9244380001) (3).jpg
The Barber Snark is an innovative two-seater kit-plane, designed and built in New Zealand by Bill Barber.{{cite web|url=http://www.kiwiaircraftimages.com/snark.html |title=Barber Snark |accessdate=17 September 2015 |last=Treweek |first=Phillip |date=3 October 2000 |url-status=dead |archiveurl=https://web.archive.org/web/20160305123202/http://www.kiwiaircraftimages.com/snark.html |archivedate=5 March 2016 }}{{rs|date=May 2025}} It first flew in late 1987. At least six aircraft List of Snarks [https://web.archive.org/web/20160305123202/http://www.kiwiaircraftimages.com/snark.html]{{rs|date=May 2025}} have been built, and some of these have varying specifications, such as different engines and control surfaces.
The Snark's tandem layout, its small frontal area, and its low wetted area mean that the aircraft has excellent performance, being able to cruise at over 110 knots despite having an engine output of only 80 bhp.
Design and development
(Source materials for this section are derived from Tim Cripp's magazine article in Today's Pilot'' of September 2006)
The Snark is a tricycle aircraft of composite construction. Its glider-like cockpit accommodates a pilot and passenger in tandem, the passenger sitting behind and higher than the pilot. The centrally mounted shoulder-wing lies behind the pilot, who has unrestricted visibility. The {{convert|80|hp|kW|0|abbr=on}} engine is sited behind the cockpit, driving a pusher propeller. Wing control surfaces on the third Snark are flaperons, while the fourth aircraft has conventional ailerons and flaps.{{cite web|url=http://1000aircraftphotos.com/Contributions/9704.htm|title=Barber Snark HA/3|work=1000aircraftphotos.com|accessdate=17 September 2015}}{{rs|date=May 2025}} Above the propeller, and aft of the cockpit is a slender boom to its T-tail empennage. The high-level tailplane is mounted above the propeller slipstream. There is a springy nylon skid beneath the fin to protect the propeller from ground strikes.
Former RNZAF Squadron Leader and aviation journalist Tim Cripps Note: In 2007 The Western Telegraph reported that Cripps was badly injured in a flying accident when a homebuilt microlight he was flying fron Andreas airfield in the Isle of Man crashed shortly after takeoff: [https://www.westerntelegraph.co.uk/news/1383468.pilot-70-recovering-after-test-flight-crash/ ] wrote an extensive article in Today's Pilot, highly praising the Snark, and describing its history, ingenious design, and flying ability. Today's Pilot magazine article, September 2006 page 90{{vs|reason=not enough detail to allow source to be verified|date=May 2025}} The aircaft under test, ZK-JPS, was fitted with Rotax 912S flat-four engine producing 100hp.
=Pivoting main gear=
The main undercarriage struts are made from a Grove alloy beam. The struts are pivoted to-and-fro by a hydraulic pump hand-operated within the cockpit. On the ground, the wheels are positioned aft of the empty CG; once aboard, the pilot pivots the wheels forward to allow a correct CG for flight. Back on the ground and parked, the wheels are moved back again before dismounting. This design means that when the cockpit is vacated, there is no inherent tendency for the aircraft to tip backwards, thereby avoiding the risk (common in tandem microlights) of the aircraft left vulnerable to being blown over.
=Wings=
The removable wings have a "near-laminar Riblett GA 37 a 315 section", chosen as it has a very low pitching moment since the point of maximum thickness is further aft (37%) of the chord than other microlights. The wings taper from root to tip, with both chord and thickness reducing symmetrically.
=Propeller=
On ZK-JPS, its Arplast composite three-blade variable pitcher pusher propeller is not mounted directly onto the engine gearbox, but has a an 18" extension tube to allow clean airflow right to the propeller hub. A Barber-designed flexible clutch successfully overcame torsional vibrations at low engine speeds.
Reception
The Snark received positive reviews in the UK and NZ press. David Laing, a former WWII pilot who built the fourth Snark, declared it to be "one of the nicest planes I've ever flown". Tim Cripps added in Today's Pilot, "this is the most enjoyable of the many aircraft I have flown - and that includes the Hunter".
Specifications (Barber Snark)
{{Aircraft specs
|ref=Treweek{{rs|date=May 2025}}
|prime units?=met
|crew=one
|capacity=one passenger
|length m=6.24
|length note=
|span m=9.3
|span note=
|height m=2.43
|height note=
|wing area sqm=
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=331
|empty weight note=
|gross weight kg=
|gross weight note=
|max takeoff weight kg=520
|max takeoff weight note=
|fuel capacity={{convert|55|L|gal}} usable
|more general=
|eng1 number=1
|eng1 name=Suzuki G13
|eng1 type=four stroke
|eng1 hp=80
|eng1 note=
|prop blade number=
|prop name=
|prop dia m=
|prop dia note=
|max speed kmh=
|max speed note=
|cruise speed kmh=205
|cruise speed note=
|stall speed kmh=61
|stall speed note=with flaps
|never exceed speed kmh=225
|never exceed speed note=
|range km=1040
|range note=
|endurance=
|ceiling m=3658
|ceiling note=
|g limits=
|roll rate=
|climb rate ms=7.12
|climb rate note=
|time to altitude=
|wing loading kg/m2=
|wing loading note=
|fuel consumption kg/km=
|power/mass=
|thrust/weight=
|avionics=
}}
References
{{reflist}}
External links
{{Commons category|Barber Snark}}
- [http://1000aircraftphotos.com/Contributions/9704.htm Barber Snark]
- [https://web.archive.org/web/20160305120603/http://www.kiwiaircraftimages.com/barber.html Background and images]
Category:Shoulder-wing aircraft
Category:Aircraft manufactured in New Zealand