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Testreport LTF 97

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Firebird Grid S
Type designationFirebird Grid S
Type test reference noDHV GS-01-1085-03
Holder of certificationFirebird International AG
ManufacturerFirebird International AG
Classification1-2 GH
Winch towingYes
Number of seats min / max1 / 1
AcceleratorYes
TrimmersNo
 Behaviour at min weight in flight (60kg)Behaviour at max weight in flight (85kg)
Take off1-21
Inflationevenly, immediatelyevenly, immediately
Rising behaviourcomes over pilot delayedimmediately comes over pilot
Take off speedaverageaverage
Take off handlingaverageeasy
 
Straight flight1-21
Trim speed [km/h]3132
Accelerated speed [km/h]45
Roll dampingaveragehigh
 
Turn handling1-21
Spin tendencyaveragenot available
Control travelaverageaverage
Agilityaveragehigh
 
Symmetric stall1-21-2
Deep-stall limitaverage 60 cm - 75 cmaverage 60 cm - 75 cm
Full stall limitaverage 65 cm - 80 cmaverage 65 cm - 80 cm
Increase in steering poweraverageaverage
 
Front collapse11
Pre-accelerationslightslight
Opening behaviourspontaneous, quicklyspontaneous, quickly
 
Asymmetric collapse1-21-2
Turn tendency90 - 180 degrees90 - 180 degrees
Rate of turnaverageaverage
with decelerationwith deceleration
Loss of altitudeaverageaverage
Stabilizationspontaneousspontaneous
Opening behaviourspontaneous, quicklyspontaneous, quickly
 
Countersteering an asymmetric collapse11
Stabilizationcountersteering easycountersteering easy
Control travelaverageaverage
Control pressure increaseaverageaverage
Turn in opposite directioneasy, no tendency to stalleasy, no tendency to stall
Opening behaviourspontaneous, quicklyspontaneous, quickly
 
Full stall, symm. exit1-21-2
Full stall, asymm. exit1-21-2
Spin out of straight flight1-21-2
Spin out of turn11
Spiral dive11-2
Entryeasyeasy
Spin tendencynot availablenot available
Exitspontaneousturn continues through 180 - 360 degrees
 
B-line stall1-21
Entryeasyeasy
Exitdelayed acceleration < 4 secspontaneous
 
Landing11
Landing behavioureasyeasy
 
Front collapse (accelerated)-1
Pre-acceleration-slight
Opening behaviour-spontaneous, quickly
-
 
Asymmetric collapse (accelerated)-1-2
Turn tendency-90 - 180 degrees
Rate of turn-average
-with deceleration
Loss of altitude-average
Stabilization-spontaneous
Opening behaviour-spontaneous, quickly
-