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The Ventus 2a in the FAI-15m Class is difficult to top. No sailplane in this class has won so many World and European Championships . Improving the uncompromised aerodynamic design of the Ventus 2a fuselage was a challenge for our design team. The lower drag of the new horizontal and vertical stabilizer airfoils, developed by Prof. Loek M. Boermans, was a big step to improve the performance of the new Ventus 2ax. Together with new developed winglets from Dr. Mark Maughmer, Pennsylvania State University in the USA, it was possible to improve also the flight characteristics of the Ventus 2ax, especially at low speeds and with high wing loading. Wind tunnel experiments and the flight tests confirmed our expectations. For the test flights the competition glider of Werner Meuser has been used. He did a lot of flights and extensive tests with the new tail and winglets in the summer 2001. We are pleased, that Werner Meuser convincingly confirmed his positive flight results with the first place in the World Championships in South Africa 2001 in his new Ventus 2ax.
 

What is new on the Ventus-2ax:

A completely new tail section based on the latest technology with low drag airfoils of the horizontal tail and the fin with clearly thinner profiles and a new geometry.

New developed winglets from Prof. Dr. Maughmer.

What has improved the Ventus 2ax:

Better gliding performance and handling characteristics at low speeds.

Faster acceleration and higher performance due to the reduced drag of the tail.

Improved rudder effectiveness, giving more harmonized and stable flight characteristics.

Reduced bug contamination on the horizontal tailplane and fin.

Working in turbulent thermals with high wing loading is easier than it was before, due to the new winglets and tail unit.

Better climbing performance at high wing loading in weak thermals. This is the result of the improved low speed flight characteristics of the Ventus 2ax and gives the pilot competitive advantages.

 

Wingspan	15 m	49.21 ft
Wing area	9.67 m²	104.10 ft²
Aspect ratio	23.3	23.3
Empty mass approx.	230 kg	507 lb
Max. all-up mass	525 kg	1157 lb
Fuselage length	6.41 m	21.03 ftm
Cockpit width	0.54 m	1.77 ft
Cockpit height	0.75 m	2.46 ft
Wing loading	30.9 - 54.3 kg/m²	6.3-11.1 lb/ft²
Max. water ballast	200 kg	52.8 US/Gal 44 IMP Gal
Max. permitted speed	270 km/h	146 kt / 168 mph
Maneuvering speed	180 km/h	97 kt | 112 mph
Minimum sink rate	0.51 m/s	100 fpm
Maximum L/D		not yet measured