title: Quasar Relief
text: # Quasar Relief
  
  The Quasar Relief is a series of Czech high-wing, single-place, topless, competitions hang gliders that was designed and produced by Quasar of Dolní Bečva. The aircraft is supplied complete and ready-to-fly.
  
  ## Design and development
  
  The Relief is made from aluminum tubing, with the cross tube and battens made from carbon fibre and the double-surface wing covered in Dacron sailcloth. The nose angle for all models is 132°. The models are each named for their rough wing area in square metres.
  
  The design is "topless", that is lacking a kingpost and upper rigging, instead using a reinforced cross tube for rigidity.
  
  Some models, designated with an "RX" suffix, have a small horizontal stabilizer attached to the keel tube that can be deployed 90° to act as a speed brake for landing.
  
  ## Variants
  
  ### Relief 13
  
      Small-sized model for lighter pilots. Its 10.4 m (34.1 ft) span wing has a wing area of 12.8 $m^2$ (138 sq ft) and an aspect ratio of 8:4:1.
  
  ### Relief 13 RX
  
      Small-sized model for lighter pilots. Its 10.2 m (33.5 ft) span wing has a wing area of 13 $m^2$ (140 sq ft) and an aspect ratio of 8.0:1. The pilot hook-in weight range is 55 to 90 kg (121 to 198 lb). This model has a small horizontal stabilizer attached to the keel tube that can be deployed 90° to act as a speed brake.
  
  ### Relief 14
  
      Mid-sized model for mid-weight pilots. Its 10.4 m (34.1 ft) span wing has a wing area of 13 $m^2$ (140 sq ft) and an aspect ratio of 7.7:1. The pilot hook-in weight range is 60 to 100 kg (132 to 220 lb).
  
  ### Relief 14 RX
  
      Mid-sized model for mid-weight pilots. Identical to the 14, except this model has a small horizontal stabilizer attached to the keel tube that can be deployed 90° to act as a speed brake.
  
  ### Relief 15
  
      Large-sized model for heavy-weight pilots. Its 10.6 m (34.8 ft) span wing has a wing area of 15.5 $m^2$ (167 sq ft) and an aspect ratio of 7.2:1. The pilot hook-in weight range is 76 to 120 kg (168 to 265 lb).
  
  ## Specifications (Relief 13)
  
  Data from Bertrand
  
  General characteristics
  
  * Crew: one
  * Wingspan: 10.4 m (34 ft 1 in)
  * Wing area: 12.8 $m^2$ (138 sq ft)
  * Aspect ratio: 8.4:1
  