View source for Sky Science PowerHawk

{{Short description|British powered parachute}}
{{Use dmy dates|date=January 2017}}
{{Use British English|date=January 2017}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox aircraft begin
 | name= PowerHawk
 | image=
 | caption=
}}{{Infobox aircraft type
 | type=[[Powered parachute]]
 | national origin=[[United Kingdom]]
 | manufacturer=[[Sky Science Powered Parachutes Limited]]
 | designer=
 | first flight=
 | introduced=circa 2000
 | retired=
 | status=Production completed
 | primary user=
 | more users= <!--Limited to three in total; separate using <br /> -->
 | produced= 2000-2003
 | number built=At least one
 | developed from= 
 | variants with their own articles=
}}
|}
The '''Sky Science PowerHawk''' is a British [[powered parachute]] that was designed and produced by [[Sky Science Powered Parachutes Limited]] of [[Tidworth]]. Now out of production, when it was available the aircraft was supplied as a kit for [[Homebuilt aircraft|amateur construction]].<ref name="WDLA04">Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 85. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X</ref>

The aircraft was introduced in about 2000 and production ended when the company went out of business at the end of 2003.<ref>{{cite web|url= https://web.archive.org/web/*/http://www.skyscience.co.uk/ |title=Sky Science |website=Internet Archive Wayback Machine |access-date=11 July 2015}}{{cbignore}}</ref>

==Design and development==
The PowerHawk was designed to comply with the [[Fédération Aéronautique Internationale]] [[microlight]] category, as well as amateur-built aircraft rules. It features a {{convert|500|sqft|m2|abbr=on}} [[parachute]]-style wing, two-seats-in-[[tandem]] accommodation, [[tricycle landing gear]] or quadracycle  landing gear and a single {{convert|70|hp|kW|0|abbr=on}} [[2si 690-L70]] engine in [[pusher configuration]].<ref name="WDLA04"/><ref name="skyscience.co.uk">{{cite web|url=http://www.skyscience.co.uk/|archive-url=https://web.archive.org/web/20001209203000/http://www.skyscience.co.uk/|title=Sky Science skydiving and parachute accessories and equipment sales|archive-date=9 December 2000|work=skyscience.co.uk|access-date=6 August 2015}}</ref>

The aircraft carriage is built from metal tubing with an optional full [[cockpit fairing]]. In flight steering is accomplished via foot pedals that actuate the canopy brakes, creating roll and yaw. On the ground the aircraft has lever-controlled nosewheel steering. The main landing gear incorporates spring rod suspension. On snow the aircraft uses four skis, two steerable ones in the front and two replacing the rear wheels.<ref name="WDLA04"/>

The aircraft has an empty weight of {{convert|285|lb|kg|0|abbr=on}} and a gross weight of {{convert|810|lb|kg|0|abbr=on}}, giving a useful load of {{convert|525|lb|kg|0|abbr=on}}. With full fuel of {{convert|10|impgal}} the payload for crew and baggage is {{convert|453|lb|kg|0|abbr=on}}.<ref name="WDLA04"/><ref name="skyscience.co.uk"/>

The standard day, sea level, no wind, take off and landing roll with a {{convert|70|hp|kW|0|abbr=on}} engine is {{convert|100|ft|m|0|abbr=on}}.<ref name="skyscience.co.uk"/>

The manufacturer estimated the construction time from the supplied kit as 30&ndash;50&nbsp;hours.<ref name="skyscience.co.uk"/>

==Operational history==
In August 2015 no examples were [[Aircraft registration|registered]] in the United Kingdom with the [[Civil Aviation Authority (United Kingdom)|Civil Aviation Authority]], although one had been registered in 2000 and de-registered by the CAA in 2005.<ref name="GINFO">{{cite web|url = http://www.caa.co.uk/application.aspx?catid=60&pagetype=65&appid=1&mode=detailnosummary&fullregmark=SSPP|title = GINFO Search Results Summary|access-date = 6 August 2015|last = [[Civil Aviation Authority (United Kingdom)]]|date = 6 August 2015}}</ref>
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==Specifications (PowerHawk) ==
{{Aircraft specs
|ref=Bertrand and manufacturer<ref name="WDLA04"/><ref name="skyscience.co.uk"/>
|prime units?=imp<!-- 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=one
|capacity=one passenger
|length m=
|length ft=9
|length in=
|length note=
|span m=
|span ft=39
|span in=6
|span note=
|width m=
|width ft=5
|width in=11
|width note=
|height m=
|height ft=6
|height in=6
|height note=
|wing area sqm=
|wing area sqft=500
|wing area note=
|aspect ratio=3.1:1
|airfoil=
|empty weight kg=
|empty weight lb=285
|empty weight note=
|gross weight kg=
|gross weight lb=810
|gross weight note=
|fuel capacity={{convert|10|impgal}}
|more general=
<!--
        Powerplant
-->
|eng1 number=1
|eng1 name=[[2si 690-L70]]
|eng1 type= in-line three cylinder, liquid-cooled, two-stroke, dual ignition [[aircraft engine]]
|eng1 kw=
|eng1 hp=70

|prop blade number=3
|prop name=composite, ground adjustable
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=

<!--
        Performance
-->
|perfhide=

|max speed kmh=
|max speed mph=32
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=27
|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=
|range km=
|range miles=140
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=950
|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=1.62
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}

==References==
{{reflist}}

==External links==
*[https://web.archive.org/web/*/http://www.skyscience.co.uk/ Company website archives] on [[Archive.org]]

[[Category:Sky Science aircraft|PowerHawk]]
[[Category:2000s British sport aircraft]]
[[Category:2000s British ultralight aircraft]]
[[Category:Single-engined pusher aircraft]]
[[Category:Powered parachutes]]