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DHV Testreport EN926-2:2005
GIN Boomerang 9 L
Type designationGIN Boomerang 9 L
Type test reference noDHV GS-01-2055-13
Holder of certificationFCA Flugschule Arlberg Marcus Benedict GmbH
ManufacturerGIN Gliders Inc.
ClassificationD
Winch towingYes
Number of seats min / max1 / 1
AcceleratorYes
TrimmersNo
GIN Boomerang 9 L
 Behaviour at min weight in flight (105kg)Behaviour at max weight in flight (125kg)
Test pilots
Harald Buntz
Harald Buntz
Sebastian Mackrodt
Sebastian Mackrodt
Inflation/take-offCC
Rising behaviourOvershoots, shall be slowed down to avoid a front collapseOvershoots, shall be slowed down to avoid a front collapse
Special take off technique requiredNoNo
 
LandingAA
Special landing technique requiredNoNo
 
Speeds in straight flightAA
Trim speed more than 30 km/hYesYes
Speed range using the controls larger than 10 km/hYesYes
Minimum speedLess than 25 km/hLess than 25 km/h
 
Control movementDD
Symmetric control pressureIncreasingIncreasing
Symmetric control travel35 cm to 50 cm35 cm to 50 cm
 
Pitch stability exiting accelerated flightAA
Dive forward angle on exitDive forward 30° to 60°Dive forward 30° to 60°
Collapse occursNoNo
 
Pitch stability operating controls during accelerated flightAA
Collapse occursNoNo
 
Roll stability and dampingAA
OscillationsReducingReducing
 
Stability in gentle spiralsAA
Tendency to return to straight flightSpontaneous exitSpontaneous exit
 
Behaviour in a steeply banked turnNote concerning spiral dives with paraglidersBB
Sink rate after two turnsMore than 14 m/sMore than 14 m/s
 
Symmetric front collapse DC
EntryRocking back less than 45°Rocking back less than 45°
RecoveryRecovery through pilot action in less than a further 3 sSpontaneous in 3 s to 5 s
Dive forward angle on exitDive forward 30° to 60°Dive forward 0° to 30°
Change of courseEntering a turn of 90° to 180°Entering a turn of 90° to 180°
Cascade occursNoNo
 
Symmetric front collapse in accelerated flightDD
EntryRocking back greater than 45°Rocking back less than 45°
RecoveryRecovery through pilot action between a further 3 s to 5 sRecovery through pilot action between a further 3 s to 5 s
Dive forward angle on exitDive forward 30° to 60°Dive forward 30° to 60°
Change of courseEntering a turn of 90° to 180°Entering a turn of 90° to 180°
Cascade occursNoNo
 
Exiting deep stall (parachutal stall)BB
Deep stall achievedYesYes
RecoverySpontaneous in less than 3 sSpontaneous in less than 3 s
Dive forward angle on exitDive forward 30° to 60°Dive forward 30° to 60°
Change of courseChanging course less than 45°Changing course less than 45°
Cascade occursNoNo
 
High angle of attack recoveryAA
RecoverySpontaneous in less than 3 sSpontaneous in less than 3 s
Cascade occursNoNo
 
Recovery from a developed full stallBC
Dive forward angle on exitDive forward 30° to 60°Dive forward 60° to 90°
CollapseNo collapseNo collapse
Cascade occurs (other than collapses)NoNo
Rocking backLess than 45°Greater than 45°
Line tensionMost lines tightMost lines tight
 
Asymmetric collapse 45-50%CC
Change of course until re-inflation90° to 180°90° to 180°
Maximum dive forward or roll angleDive or roll angle 45° to 60°Dive or roll angle 45° to 60°
Re-inflation behaviourSpontaneous re-inflationSpontaneous re-inflation
Total change of courseLess than 360°Less than 360°
Collapse on the opposite side occursNoNo
Twist occursNoNo
Cascade occursNoNo
 
Asymmetric collapse 70-75%DC
Change of course until re-inflationGreater than 360°Less than 90°
Maximum dive forward or roll angleDive or roll angle 45° to 60°Dive or roll angle 45° to 60°
Re-inflation behaviourInflates in less than 3 s from start of pilot actionSpontaneous re-inflation
Total change of courseGreater than 360°Less than 360°
Collapse on the opposite side occursYes, causing turn reversalNo
Twist occursNoNo
Cascade occursNoNo
 
Asymmetric collapse 45-50% in accelerated flightDD
Change of course until re-inflation90° to 180°Less than 90°
Maximum dive forward or roll angleDive or roll angle 45° to 60°Dive or roll angle 45° to 60°
Re-inflation behaviourInflates in less than 3 s from start of pilot actionInflates in 3 s to 5 s from start of pilot action
Total change of courseGreater than 360°Less than 360°
Collapse on the opposite side occursYes, causing turn reversalNo
Twist occursNoNo
Cascade occursNoNo
 
Asymmetric collapse 70-75% in accelerated flightDD
Change of course until re-inflationGreater than 360°90° to 180°
Maximum dive forward or roll angleDive or roll angle 45° to 60°Dive or roll angle 45° to 60°
Re-inflation behaviourInflates in less than 3 s from start of pilot actionInflates in 3 s to 5 s from start of pilot action
Total change of courseGreater than 360°Less than 360°
Collapse on the opposite side occursYes, causing turn reversalNo
Twist occursNoNo
Cascade occursNoNo
 
Directional control with a maintained asymmetric collapseCC
Able to keep courseYesYes
180° turn away from the collapsed side possible in 10 sYesYes
Amount of control range between turn and stall or spin25 % to 50 % of the symmetric control travel25 % to 50 % of the symmetric control travel
 
Trim speed spin tendencyAA
Spin occursNoNo
 
Low speed spin tendencyDD
Spin occursYesYes
 
Recovery from a developed spinCC
Spin rotation angle after releaseStops spinning in 90° to 180°Stops spinning in 90° to 180°
Cascade occursNoNo
 
B-line stall
Not carried out because the manoeuvre is excluded in the user's manual
 
Big ears
Not carried out because the manoeuvre is excluded in the user's manual
 
Big ears in accelerated flight
Not carried out because the manoeuvre is excluded in the user's manual
 
Behaviour exiting a steep spiralCC
Tendency to return to straight flightSpontaneous exitSpontaneous exit
Turn angle to recover normal flight720° to 1 080°, spontaneous recovery720° to 1 080°, spontaneous recovery
Sink rate when evaluating spiral stability [m/s]1414
 
Alternative means of directional controlAA
180° turn achievable in 20 sYesYes
Stall or spin occursNoNo
 
Any other flight procedure and/or configuration described in the user's manualCC
Description of manoeuvre / configurationSteuerung mittels B Tragegurt; siehe Betriebsanleitung Steuerung mittels B Tragegurt; siehe Betriebsanleitung
Procedure works as describedYesYes
Procedure suitable for novice pilotsNoNo
Cascade occursNoNo