Abstract :
Landing gear could not be separated with aircraft, when the aircraft takes off,
landing, parks and taxiing (moving on land), Landing gear serves to withstand the weight
of aircraft when on the ground resist impact loads when the wheel touch down the runway,
and when taking off. Wheel landing gear and fuselage are connected by strut bar which
props the entire weight of aircraft in the ground and resist impact loads when landing. In
the previous studies, the use of strut bar which is on Cessna drone model uses steel (fe)
material that is ponderable and inefficient for pruning the weight and creates a new strut
bar type using composite with fiber glass material blend of woven roving and
unidirectional with same size, expected for decreasing extra weight with nearly the same
strength as the existing steel sturt bar.
Manufacturing process composite strurt bar landing gear with fiber glass material
blend of woven roving and unidirectional uses hand lay up method that is by smearing
layered glass fiber glued by lycal resin for a predetermined thickness.
Strut bar landing gear composite manufacturing result, structural strength could
be found by analyzing the ultimate tensile strength and impact strength based on the surface
area of the material. The surface area is 0,5cm X 1,5cm = 0,75 cm2 or as big as 0,000075
m2. The strength of the ultimate tensile structure can be known by multiplying the surface
area and ultimate tensile, 0.000075 m2 X 93.079.223 N/m2 = 6,980.94 N or converted into
kilogram force of 711.86 kgf. While the strength of impact structure is known with impact
energy (J) divided by surface area, 15.7 J: 0.000075 m2 = 209.333,333 J/m2.