{{Short description|British man-powered aircraft}} <!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{Use dmy dates|date=February 2018}} {{Use British English|date=February 2018}} {{Infobox aircraft | name = Puffin | logo = | logo_size = | image = | alt = | caption = | long_caption = | other_names = | aircraft_type = Human-Powered Aircraft | aim = | outcome = | related = | national_origin = United Kingdom | manufacturer = Hatfield Man Powered Aircraft Club (HMPAC) | design_group = | designer = John Wimpenny | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 2 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 16 November 1961 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}
The '''HMPAC Puffin''' was a British man-powered aircraft designed by a team headed by John Wimpenny, an aerodynamicist at the de Havilland Aircraft Company. It was built by the Hatfield Man Powered Aircraft Club (HMPAC) on the company's premises in Hatfield, Hertfordshire. On 2 May 1962, Wimpenny, aged 39, piloted the Puffin at the Hatfield Aerodrome, pedalling to power the propeller, achieving a flight distance of {{convert|995|yd|m|abbr=on}}, a world record which was to stand for ten years. The Puffin had a wingspan of {{convert|85|ft|m|abbr=on}}.<ref name=Telegraph>{{cite news|agency=The Daily Telegraph|date=5 May 1962|page=1}}</ref><ref name=Guardian>{{cite news|agency=The Daily Guardian|date=5 May 1962|page=1}}</ref>
==Puffin II== An improved version of the Puffin was developed and built in 1965 as the HMPAC Puffin II. First flown on 27 August 1965, the Puffin II utilized the transmission components of the Puffin I in a completely new airframe.
After it had been damaged, the Puffin II airframe was given to Liverpool University, who used it to build the Liverpuffin.
==Specifications == {{Aircraft specs |ref=Jane's All The World's Aircraft 1962–63<ref name="jawa62 p151">Taylor 1962, p. 151.</ref> |prime units?=kts
|crew=1 |capacity= |length m= |length ft=20 |length in= |length note=(excluding nose boom) |span m= |span ft=84 |span in= |span note= |upper span m= |upper span ft= |upper span in= |upper span note= |mid span m= |mid span ft= |mid span in= |mid span note= |lower span m= |lower span ft= |lower span in= |lower span note= |swept m=<!-- swing-wings --> |swept ft=<!-- swing-wings --> |swept in=<!-- swing-wings --> |swept note= |dia m=<!-- airships etc --> |dia ft=<!-- airships etc --> |dia in=<!-- airships etc --> |dia note= |width m=<!-- if applicable --> |width ft=<!-- if applicable --> |width in=<!-- if applicable --> |width note= |height m= |height ft=9 |height in=4 |height note= |wing area sqm= |wing area sqft=330 |wing area note= |swept area sqm=<!-- swing-wings --> |swept area sqft=<!-- swing-wings --> |swept area note= |volume m3=<!-- lighter-than-air --> |volume ft3=<!-- lighter-than-air --> |volume note= |aspect ratio=<!-- sailplanes --> |airfoil= |empty weight kg= |empty weight lb=118 |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= |lift kg=<!-- lighter-than-air --> |lift lb=<!-- lighter-than-air --> |lift note= |more general= <!-- Powerplant --> |eng1 number=1 |eng1 name=Human |eng1 type= athlete |eng1 kw=<!-- prop engines --> |eng1 hp=<!-- prop engines --> |eng1 shp=<!-- prop engines --> |eng1 kn=<!-- jet/rocket engines --> |eng1 lbf=<!-- jet/rocket engines --> |eng1 note= |power original= |thrust original= |eng1 kn-ab=<!-- afterburners --> |eng1 lbf-ab=<!-- afterburners -->
|eng2 number= |eng2 name= |eng2 type= |eng2 kw=<!-- prop engines --> |eng2 hp=<!-- prop engines --> |eng2 shp=<!-- prop engines --> |eng2 kn=<!-- jet/rocket engines --> |eng2 lbf=<!-- jet/rocket engines --> |eng2 note= |eng2 kn-ab=<!-- afterburners --> |eng2 lbf-ab=<!-- afterburners -->
|eng3 number= |eng3 name= |eng3 type= |eng3 kw=<!-- prop engines --> |eng3 hp=<!-- prop engines --> |eng3 shp=<!-- prop engines --> |eng3 kn=<!-- jet/rocket engines --> |eng3 lbf=<!-- jet/rocket engines --> |eng3 note= |eng3 kn-ab=<!-- afterburners --> |eng3 lbf-ab=<!-- afterburners --> |more power=
|prop blade number=2 |prop name=wooden |prop dia m=<!-- propeller aircraft --> |prop dia ft=9<!-- propeller aircraft --> |prop dia in=<!-- propeller aircraft --> |prop dia note=
|rot number=<!-- helicopters --> |rot dia m=<!-- helicopters --> |rot dia ft=<!-- helicopters --> |rot dia in=<!-- helicopters --> |rot area sqm=<!-- helicopters --> |rot area sqft=<!-- helicopters --> |rot area note= <!-- Performance --> |perfhide=Y
|max speed kmh= |max speed mph= |max speed kts= |max speed note= |max speed mach=<!-- supersonic aircraft --> |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=<!-- if range unknown --> |ceiling m= |ceiling ft= |ceiling note= |g limits=<!-- aerobatic --> |roll rate=<!-- aerobatic --> |glide ratio=<!-- sailplanes --> |climb rate ms= |climb rate ftmin= |climb rate note= |time to altitude= |sink rate ms=<!-- sailplanes --> |sink rate ftmin=<!-- sailplanes --> |sink rate note= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |disk loading kg/m2= |disk loading lb/sqft= |disk loading note= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass= |thrust/weight=
|more performance= |avionics= }}
==See also== * Malliga 1 * SUMPAC * List of human-powered aircraft
==References== {{Reflist}}
*{{cite book|last=Taylor|first=John W. R.|authorlink=John W. R. Taylor|title=Jane's All The World's Aircraft 1962–63|year=1962|publisher=Sampson Low, Marston & Company, Ltd.|location=London}}
==Further reading== *{{cite book|last1=Reay|first1=D. A.|title=The History of Man-Powered Flight|date=2014|publisher=Elsevier|isbn=978-1483145990|pages=182–197|url=https://books.google.com/books?id=KByoBQAAQBAJ&q=hmpac+puffin+II&pg=PA183|accessdate=12 August 2015}}
==External links== * [http://www.flightglobal.com/FlightPDFArchive/1961/1961%20-%201737.PDF Flight archive ] * [https://web.archive.org/web/20160313235426/http://www.humanpoweredflying.propdesigner.co.uk/html/flights.html THE FIRST TRUE FLIGHTS]
Category:1960s British experimental aircraft Category:Aircraft first flown in 1961 Category:Human-powered aircraft Puffin Category:Single-engined pusher aircraft Category:Shoulder-wing aircraft