7/22/2019 Ab139 Contact Areas 6400

1/1

FOOTPRINTS AT MTOW 6400 Kg TIRES TYPE: DUNLOP 5.00-5 10PR DR5875 (NLG), 18X5.5 10PR DR9837T (MLG)

STANDARD CONDITION CG sta 5413 mm

NOSE LANDING GEAR1533,5 lb Single Wheel Load and Pressure 137 PSI

NET AREA 2x11,2 sq.in 22,4 sq.inch (total)

MAIN LANDING GEAR

5522,5 lb Total Wheels Load and Pressure 239 PSI

NET AREA 2x23,01 sq.in 46,02 sq.in (total)

LANDING TESTS (MTOW 6400 Kg) CG REACTION FACTOR (g) 2,39CASE DESCRIPTION GROUND VERTICAL REACTION (N) NET AREA (in2)

3 POINT LEVEL LANDING CG FWD

NOSE LANDING GEAR 32256 26,5 (total)

MAIN LANDING GEAR 37813 71 (total)

3 POINT LEVEL LANDING CG AFT

NOSE LANDING GEAR 30155 24,7 (total)

MAIN LANDING GEAR 39083 73,4 (total)

Dimensions Related to the standard condit ion above and also related to 1 wheel footprint for NLG and MLGinch

MLG Length 8,69

Breadth 4,95

NLG Length 4,81

Breadth 2,79

Note: the dimensions have been calculated starting from the fooprint

areas and doing an aproximation of the area as an elliptical shape. This

because the real dimensions are not available in Agusta tests but only i n

Dunlop tests (Using a different configuration).