Schreder HP-11

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The Schreder HP-11 is a homebuilt glider designed by Richard Schreder in 1962. Schreder campaigned the prototype in the 1963 World Soaring Championships in Argentina, achieving a third-place finish.

After minor modifications, including adoption of retractable undercarriage and deletion of the prototype's flap-aileron interconnect, Schreder marketed the HP-11A version as a kit. Several dozen were completed and flown through the mid-1970s.

The HP-11 is constructed almost entirely of aluminum alloy, using plastics and fiberglass composites only for non-structural fairings. The wings are of conventional riveted construction. The wing spar is an I-beam assembled from 7075-T6 alloy sheet and angle extrusions.

Like other Schreder sailplanes, the HP-11 uses 90-degree flaps for glidepath control.

pecifications

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crew=One
capacity=
length m=
length ft=
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span m=15.85
span ft=52
span in=0
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dia m=
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width m=
width ft=
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height m=
height ft=
height in=
wing area sqm=9.7
wing area sqft=104
swept area sqm=
swept area sqft=
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volume m3=
volume ft3=
aspect ratio= 26
empty weight kg=204
empty weight lb=450
gross weight kg=318
gross weight lb=700
lift kg=
lift lb=

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max speed kmh=240
max speed mph=150
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range km=
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endurance h=
endurance min=
ceiling m=
ceiling ft=
glide ratio= 37
climb rate ms=
climb rate ftmin=
sink rate ms= 0.55
sink rate ftmin= 108

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References

* [http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=160 sailplanedirectory.com]

External links

* [http://soaridaho.com/Schreder/HP-11/HP-11_Links.html HP-11 Reference Info Link]