Question

(a) Using a flight envelope diagram, identify/locate the points/boundaries on the envelope for appropriate flight speed and flight manoeuvres. Also identify the limit load and load factors. (b) The aircraft shown in Fig. 4(a) weighs 270 kN and has landed such that, at the instant of impact, the ground reaction on each main undercarriage wheel is 400kN and its vertical velocity is 3.5 ms$^{-1}$. If each undercarriage wheel weighs 5.5kN and is attached to an oleo strut, as shown in Fig. 4(b), calculate the axial load and bending moment in the strut; the strut may be assumed to be vertical. (c) Predict the shear force and bending moment in the wing at the section AA if the wing, outboard of this section, weighs 13.2 kN and has its CG 3.0 m from AA, and the outboard wing supports an engine weighs 5 kN at 1.5 m from AA.

          (a) Using a flight envelope diagram, identify/locate the points/boundaries on the envelope for
appropriate flight speed and flight manoeuvres. Also identify the limit load and load factors.
(b) The aircraft shown in Fig. 4(a) weighs 270 kN and has landed such that, at the instant of
impact, the ground reaction on each main undercarriage wheel is 400kN and its vertical
velocity is 3.5 ms$^{-1}$. If each undercarriage wheel weighs 5.5kN and is attached to an oleo
strut, as shown in Fig. 4(b), calculate the axial load and bending moment in the strut; the strut
may be assumed to be vertical.
(c) Predict the shear force and bending moment in the wing at the section AA if the wing,
outboard of this section, weighs 13.2 kN and has its CG 3.0 m from AA, and the outboard
wing supports an engine weighs 5 kN at 1.5 m from AA.

(a) Using a flight envelope diagram, identify/locate the points/boundaries on the envelope for
appropriate flight speed and flight manoeuvres. Also identify the limit load and load factors.
(b) The aircraft shown in Fig. 4(a) weighs 270 kN and has landed such that, at the instant of
impact, the ground reaction on each main undercarriage wheel is 400kN and its vertical
velocity is 3.5 ms^-1. If each undercarriage wheel weighs 5.5kN and is attached to an oleo
strut, as shown in Fig. 4(b), calculate the axial load and bending moment in the strut; the strut
may be assumed to be vertical.
(c) Predict the shear force and bending moment in the wing at the section AA if the wing,
outboard of this section, weighs 13.2 kN and has its CG 3.0 m from AA, and the outboard
wing supports an engine weighs 5 kN at 1.5 m from AA.

Added by Javier P.

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