© Julio Cesar
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Strenght Tests of the Aircraft "KP 2U - SOVA"

 All strenght tests, which are mentioned at following overview, were performed at State cetrificated testing-room at Aerial Institute VUT in Brno. The tests were designed in order to accomplish the requirements of the  Czech regulations UL-2,  German regulations BFU and Slovak regulations. The strict criterions were used for all tests.
 
Tested structure part Loading case The test date Achieved Note
Wing
 negative manoeuvre at VD 24.6.97 100% Without failure
Aileron
 upward loading (depth position determinated for 125% of the hinge moment 26.9.97 110% without failure of the aileron
Aileron
 downward loading (125% of the hinge moment) 26.6.97 110% without failure of the aileron
Wing
 02 positive manoeuvre at VD 3.7.97 184% without failure
Flap
 loading at 35 deg. Deflection 8.7.97 110% without failure
Stabilizer
 6 - loading VOP according SP 17.7.97 100% without failure
Stabilizer
 5 - symetric negative gust at  VD 22.7.97 110% without failure
Stabilizer
 5 - antisymetric 22.7.97 100% without failure
Elevator
 6 - manoeuvre according to SP 13.8.97 100% without failure
Fuselage
 5 - negative gust at VD 31.7.97 100% without failure
Fuselage
 5 - antisymetric (70:100) 31.7.97 105% without failure
Fuselage
 2 - manoeuvre at VA (síla nahoru) 1.8.97 125% without failure
Fuselage
 5 - gust to SOP at VD 7.8.97 123% without failure
Fuselage
 combinated loading 7.8.97 110% without failure
Fuselage
 2 - manoeuvre by rudder at VA 18.8.97 140% without failure
Elevator control
 combination of loading cases by one and both pilots 28.8.97 100% without failure
Rudder control
 combination of loading cases by one and both pilots 10.9.97 100% without failure
Rudder control
 crash loading cases 17.9.97 100% without failure
Aileron control
 combination of loading cases by one and both pilots 10.10.97
17.10.97
19.11.97		 100%
67%
100%		 control stop cases repeated
after reconstruction
Nose gear
 6 vertical resistance force
9 vertical sideward force
a) neutral position
b) deflected to backstop		 4.12.97
4.12.97
4.12.97		 120%
50%
105%		 without failure
without failure
failure
Main gear
 2 -vertical and resistance force
4 - vertical sideward force		 9.3.98
6.2.98		 105%
100%		 failure
without failure
Main gear attachment
 2 - vertical and resistance force
4 - vertical sideward force		 22.4.98
15.4.98		 100%
100%		 without failure
after reconstruction of the web
Rudder
 2 - manoeuvre 26.6.98 140% without failure
Nose gear attachment
 6 - vertical resistance force
9 - vertical sideward force		 2.12.98
3.12.98		 100%
100%		 without failure
without failure
Engine mounting for R 912 S with circle
 2 - torque moment and vertical loading factor
3 - sideward loading factor		 16.1.98
16.1.98		 100%
120%		 without failure
without failure
Engine mounting for R 912 S without circle
 2 - torque moment and vertical loading factor
3 - sideward loading factor		 12.3.98
12.3.98		 100%
110%		 without failure
without failure
Folding strut of the nose gear
 collapsing force determination 21.5.98 15990N decreasing of the load force
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© Júlio Cesar