Yakovlev Yak-60
{{short description|Experimental helicopter design}}
{{About|a conjectural designation for a helicopter project|the Yakovlev izdeliye 60 (изделие, "product / item") reconnaissance drone|Yakovlev Pchela}}
Yakovlev Yak-60 (known as Yak-32 in some sources){{cite book |last=Gordon |first=Yefim |title=OKB Yakovlev |year=2005 |publisher=Midland Publishing |location=Hinkley |isbn=1-85780-203-9 |author2=Dmitry |author3=Sergey Komissarov}} is the possible designation for an experimental Yakovlev tandem-rotor heavy-lift helicopter design of the late 1960s. This design never progressed beyond the model stage.{{cite book|last1=Gordon|first1=Yefim|last2=Gunston|first2=Bill|title=Yakovlev aircraft since 1924|date=1997|publisher=Putnam [u.a.]|location=London [u.a.]|isbn=978-0851778723|edition=1. publ.}}
Development
This helicopter was designed in the late 1960s, and may have been a competing design to the Mil Mi-12 heavy lift helicopter. It featured two Mil Mi-6 rotors in tandem, each driven by a pair of {{convert|6,500|hp|kW|abbr=on}} Soloviev D-25VF engines, potentially giving it four times the payload capacity of the Boeing CH-47 Chinook. The cockpit would have been similar to that of the Yakovlev Yak-24. Compared to the radical Mi-12, the Yak-60 design was far more conventional, though two Mi-12s were produced and no Yak-60s.
It has been suggested that the designation Yak-60 was based on an extant study model which had the number "60" painted prominently on its side.
Specifications (Yak-60 estimated)
{{Aircraft specs
|prime units?=met
|genhide=
|crew=three
|capacity={{convert|42|tonnes|lb|abbr=on}} of cargo
|length m=46
|length ft=
|length in=
|length note=
|height m=
|height ft=
|height in=
|height note=
|empty weight kg=55000
|empty weight lb=
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight kg=100000
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity=
|more general=
|eng1 number=4
|eng1 name=Soloviev D-25VF
|eng1 type=turboshaft engines in pairs for each rotor
|eng1 kw=
|eng1 hp=
|eng1 shp=6500
|eng1 kn=
|eng1 lbf=
|eng1 note=
|power original=
|thrust original=
|eng1 kn-ab=
|eng1 lbf-ab=
|rot number=2
|rot dia m=35
|rot dia ft=
|rot dia in=
|rot area sqm=
|rot area sqft=
|rot area note=
|perfhide=
|max speed kmh=
|max speed mph=
|max speed kts=
|max speed note=
|max speed mach=
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed 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=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|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
References
{{commons category|Yakovlev aircraft}}
{{Reflist}}
{{Yakovlev aircraft}}
Category:1960s Soviet military transport aircraft
Category:Abandoned military aircraft projects of the Soviet Union