{{Short description|Canadian homebuilt light aircraft}} {{Use dmy dates|date=January 2022}} {{Use Canadian English|date=January 2022}} <!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{Infobox aircraft | name = EZ Harvard | logo = | logo_size = | image = Blue Yonder EZ Harvard C-IKDM 06.JPG | alt = | caption = The prototype EZ Harvard | long_caption = | other_names = | aircraft_type = Kit plane | aim = | outcome = | related = | national_origin = Canada | manufacturer = Blue Yonder Aviation | design_group = | designer = Wayne Winters | builder = | issuer = | status = | owners = | primary_user = Private owners | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 1 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = 2002 | retired = | first_flight = 2002 | initiated = | in_service = | last_flight = | expected = | developed_from = EZ King Cobra | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}
thumb|right|The EZ Harvard prototype
The '''Blue Yonder EZ Harvard''' is a Canadian designed and built, single-engined, single-seat aircraft provided as a completed aircraft or in kit form by Blue Yonder Aviation. The aircraft is a 75% scale replica of the North American Harvard trainer of the Second World War.<ref name="BY1">{{cite web|url = http://www.ezflyer.com/page10BYA.html|title = EZ HarvardFlyer|accessdate = 2009-03-02|last = Winters|first = Wayne|date = n.d.|url-status = dead|archiveurl = https://web.archive.org/web/20090226023004/http://ezflyer.com/page10BYA.html|archivedate = 2009-02-26}}</ref>
The aircraft can be constructed in Canada as a basic ultra-light, or amateur-built aircraft, but is not currently available as an advanced ultra-light.<ref name="TCCAR">{{cite web|url=http://wwwapps.tc.gc.ca/Saf-Sec-Sur/2/CCARCS-RIACC/ADet.aspx?id=500808&rfr=RchSimp.aspx |title=Canadian Civil Aircraft Register |accessdate=7 November 2016 |last=Transport Canada |date=7 November 2016 }}</ref><ref name="TCAULA">{{cite web|url = http://www.tc.gc.ca/civilaviation/general/CCARCS/advancedullist.htm|title = Listing of Models Eligible to be Registered as Advanced Ultra-Light Aeroplanes (AULA) |accessdate = 2009-03-02|last = Transport Canada|authorlink = |date=November 2008}}</ref>
==Development== The EZ Harvard was designed by Wayne Winters of Indus, Alberta and based on the earlier EZ King Cobra. The project was started as a customer request for a scale Harvard replica and was later offered as a commercially available kit aircraft.
Winters created the EZ Harvard by using the cantilever wing design from the EZ King Cobra and added {{convert|4|ft|m}} additional span, to increase the wingspan to {{convert|31|ft|m}} and the wing area to {{convert|176|sqft|m2|abbr=on}}. The fuselage was redesigned to give the round cross section, glazed canopy and distinctive fin shape of the original Harvard. The aircraft retained the Junkers ailerons of the original Merlin wing along with the Clark "Y" airfoil and construction featuring a leading edge "D" cell and foam ribs. The fuselage is constructed of welded 4130 steel tube. Even though the Harvard was originally a two-seat aircraft the EZ Harvard is a single seater with the prototype powered by a Rotax 582 two stroke engine of {{convert|64|hp|kW|0|abbr=on}}.<ref name="BY1" /><ref name="IncompleteGuide">{{cite web|url = http://www.ae.uiuc.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage|accessdate = 2009-02-28|last = Lednicer|first = David|date = October 2007|archive-url = https://web.archive.org/web/20080515232025/http://www.ae.uiuc.edu/m-selig/ads/aircraft.html|archive-date = 2008-05-15|url-status = dead}}</ref>
The prototype of the new design flew in 2002. In the basic ultralight version gross weight is limited to the category maximum of {{convert|1200|lb|kg|0|abbr=on}}.<ref name="BY1" />
The EZ Harvard has a large round cowling that can accommodate a variety of powerplants:<ref name="BY2">{{cite web|url = http://www.ezflyer.com/page34BYA.html|title = EZ Harvard Price List|accessdate = 2009-03-02|last = Winters|first = Wayne|date = n.d.|url-status = dead|archiveurl = https://web.archive.org/web/20090317071441/http://ezflyer.com/page34BYA.html|archivedate = 2009-03-17}}</ref>
*Rotax 503 {{convert|50|hp|kW|0|abbr=on}} *Rotax 582 {{convert|64|hp|kW|0|abbr=on}} *Rotax 912 {{convert|80|hp|kW|0|abbr=on}}
==Operational history== Despite being widely demonstrated no further orders have been received for the type and the prototype remains the sole flying example.<ref name="TCCAR" /> <!-- ==Variants== ==Operators== -->
==Specifications (Rotax 582) ==
{{Aircraft specs |prime units? = imp |ref=Blue Yonder website<ref name="BY1" /> |crew=one |capacity=705 lb (320 kg) useful load |length ft= 21 |length m=6.4 |span ft=31 |span m=9.5 |height ft=7 |height m=2.1 |wing area sqft= 176 |wing area sqm= 16.4 |airfoil=Clark Y<ref name="IncompleteGuide" /> |empty weight lb= 495 |empty weight kg= 224 |gross weight lb= 1200 |gross weight kg= 544 |eng1 name=Rotax 582 |eng1 type= fixed pitch |eng1 number= 1 |eng1 hp= 64 |eng1 kw=48 |max speed mph= 100 |max speed kmh=162 |cruise speed mph= 90 |cruise speed kmh=146 |stall speed mph= 40 |stall speed kmh= 65 |range km=615 |ceiling ft= 12,000 |ceiling m= 3660 |power/mass=18.75 lb/hp (0.09 kW/kg) }}
==See also== {{aircontent |see also=
|related= |similar aircraft= |lists= }}
==References== {{reflist}}
==External links== {{Commons category|Blue Yonder EZ Harvard}} * [https://web.archive.org/web/20090222062859/http://ezflyer.com/ Blue Yonder Aviation]
{{Blue Yonder Aviation}} {{Uncertified aircraft developed in Canada}}
Category:Low-wing aircraft EZ Harvard Category:2000s Canadian ultralight aircraft Category:Homebuilt aircraft Category:Replica aircraft