This is the Test report provided by Meikel of Fresh Breeze

DULV Report:
Fresh Breeze Silex

DULV is the German agency responsible for certifying ultralights in that country. Many have asked about the certification of this fairly prevalent wing (the Silex) and in response, Meikel of Fresh Breeze sent us its DULV report. Manfred Mornhinweg was kind enough to post an interpretation to the PilotsPPGClub and it is included here.

This is not, in any way, intended as an endorsement; it is provided for information only to the PPG community.

Interpretation

TEST PROTOCOL FOR MOTORIZED GLIDER TEST FLIGHT (WITHOUT MOTOR UNIT)

Model: Silex S (Swing)
Trimmers: closed
Speed bar: not depressed
Harness used: Vonblon Liga
Wing is approved for use with other harnesses
Test result: Approved for training
Takeoff weight: 95 to 120 kg
Test pilot: Stephan Schuler, on 1998-10-27, takeoff weight: 101 kg
Test flight area: Monte Baldo, Garda lake
Takeoff slope: Moderate
Wind direction: SW
Wind speed: 10 km/h
Thermal activity: none
Turbulence: none

1) Takeoff:

Filling behavior: Uniform, quick
Rising behavior: Comes quickly over the pilot
Takeoff speed: Medium
Overall takeoff behavior: Simple
Required force: low
Category: 1

2) Straight flight:

Trim speed: average
Speed range: medium
Roll damping: average
Pitch oscillations: average
Direction stability: here the fax shows no input
Flutter: no
Category: 1-2

3) Handling in turns:

Spin tendency: none
Brake travel: moderate/high
Agility: high
Brake force increment: rising moderately
Controllability without brakes: controllable by rear risers
Category: 1-2

4) Bilateral overcontrol:

Bilateral overcontrol via brakes:

Parachuting limit: average (between 60 and 75 cm)
Stays in parachuteal mode: no
Full stall limit: early (less than 65cm)
Full stall can be reached with full brake travel: yes
Wing falls backwards: moderately
Brake force rises: clearly
Category: 2

5) Frontal collapse:

Can be simulated: via A-lines
Travel: high (more than 15cm)
Opening behavior: Autonomous, retarded
Category: 1-2

6) Asymmetric collapse:

Can be simulated: via A-lines
Opening behavior: autonomous, retarded
Category: 2

7) Asymmetric collapse and countersteering

Stabilization: No tendency towards stall
Brake travel: moderate
Brake force rise: moderate
Countersteering: simple, without stall tendency
Opening behavior: autonomous, retarded
Category: 1-2

8) Full stall, symmetric exit:

Behavior after entering: calm
Reaction: moderate surge tendency, no collapse
Category: 2

9) Full stall, asymmetric exit:

Reaction: moderate asymmetric surge tendency
Category: 2

10) Spin starting from trim speed:

Spinning speed: high
Exiting: Continues to spin for 180 degrees
Reaction: Fax is not readable here...
Category: 2

11) Spin starting from stationary curve flight

Reaction: moderate asymmetric surge tendency, no collapse
Category: 1-2

12) Spiral dive:

Entry: Easy
Spin tendency: not present
Exit: autonomous, continues to turn for 180 to 360 degrees
Category: 1

13) B-line stall:

Entry: easy
Exit (after releasing risers): autonomous
Category: 1

14) Landing:

Flare point: average
Landing speed: average
Landing behavior: simple
Category: 1-2