The Schreder HP-16 is an American mid-wing, single seat, V tailed, FAI Standard Class glider that was designed by Richard Schreder.[1][2]

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.[1][2]

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.[1][2]

The HP-16s were all amateur-built aircraft and about 20 were completed and flown.[1][2]

Operational history

In April 2011 there were still eleven HP-16s registered with the US Federal Aviation Administration and two registered with Transport Canada.[3][4]

Aircraft on display

• National Soaring Museum - 1, listed as "in storage"[5]

Specifications (variant specified)

Data from Sailplane Directory and Soaring[1][2]

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

See also

• List of gliders

References

External links

• Photo of HP-16 with a T-tail in flight