title: Preiss RHJ-7
text: # Preiss RHJ-7
  
  The Preiss RHJ-7 is a side-by-side two-seat flapped glider developed by Preiss from a Schreder HP-14. The design used standard HP-14 wings with a 2 ft (0.6 m) center section added to the fuselage, V-tail, fixed undercarriage and a single control stick between the seats. The RHJ-7 first flew in 1966 and was the starting point for the RHJ-8 and RHJ-9 variants, also homebuilts.
  
  ## Specifications
  
  General characteristics
  
  * Crew: 1 pilot
  * Capacity: 1 passenger
  * Wingspan: 17.22886 m (56 ft 6 in)
  * Wing area: 13 $m^2$ (140 sq ft)
  * Aspect ratio: 22.81r8
  * Empty weight: 223 kg (492 lb)
  * Gross weight: 404 kg (891 lb)
  
  Performance
  
  * Maximum glide ratio: 38 (at 105 km/h)
  * Rate of sink: 0.61 m/s (120 ft/min)
  