Girish Mahajan (Editor)

Schreder HP 16

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Wingspan
  
15 m

Designer
  
Richard Schreder

The Schreder HP-16 is an American mid-wing, single seat, V tailed, FAI Standard Class glider that was designed by Richard Schreder.

Contents

Design and development

After the failure of the HP-15 to perform well in the 1969 US Nationals Schreder started the HP-16 with a new design philosophy. Avoiding the extremely high aspect ratio that the 15 had, he opted for a more modest 21.5:1 aspect ratio and larger wing area to improve performance in weak conditions. The HP-16's wing has 50% more wing area than the HP-15 and uses a Wortmann 67-150 airfoil.

Like other Schreder designs the HP-16 is of all-metal construction, but with the wing skins bonded to foam ribs rather than using rivets to provide a smoother surface. The bonded construction also cut building time. The wing features the signature Schreder 90° flaps that allow steep descents and the use of small fields for landing.

The HP-16s were all amateur-built aircraft and about 20 were completed and flown.

Operational history

In April 2011 there were still eleven HP-16s registered with the US Federal Aviation Administration and two registered with Transport Canada.

Aircraft on display

  • National Soaring Museum - 1, listed as "in storage"
  • Specifications (variant specified)

    Data from Sailplane Directory and Soaring

    General characteristics

  • Crew: one
  • Wingspan: 49 ft 3 in (15 m)
  • Wing area: 113 sq ft (10.5 m2)
  • Aspect ratio: 21.5
  • Airfoil: Wortmann 67-150
  • Empty weight: 500 lb (227 kg) including 200 lbs (90 kg) of water ballast.
  • Gross weight: 924.5 lb (419 kg)
  • Performance

  • Maximum glide ratio: 36:1 at 55 mph (89 km/h)
  • Rate of sink: 130 ft/min (0.66 m/s) at 50 mph (80 km/h)
  • Wing loading: 8.18 lb/sq ft (39.9 kg/m2) with water ballast
  • References

    Schreder HP-16 Wikipedia