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Figure below shows an aircraft fighter. The wing of the aircraft may be modelled as a clamped wing with two lump masses at its centre and tip. The two masses represent the mass of the wing and the missiles. The equivalent model shown in the figure is used to estimate the first two natural frequencies of the wing and therefore the fuselage can be assumed rigid. 24EI If m1 = am, m2 = bm and bending stiffnesses of the beams are k where a = 9.7147 and b = 4.1873 and if w, and wz are the first and second natural frequencies of the system, w2/wz is: x, (t) x2(t) EI т, EI (m2) /2 1/2 3.2719 2.4236 1.3088 1.7692 4.7260

Figure below shows an aircraft fighter. The wing of the aircraft may be modelled as a clamped wing with two lump masses at its centre and tip. The two masses represent the mass of the wing and the missiles. The equivalent model shown in the figure is used to estimate the first two natural frequencies of the wing and therefore the fuselage can be assumed rigid. 24EI If m1 = am, m2 = bm and bending stiffnesses of the beams are k where a = 9.7147 and b = 4.1873 and if w, and wz are the first and second natural frequencies of the system, w2/wz is: x, (t) x2(t) EI т, EI (m2) /2 1/2 3.2719 2.4236 1.3088 1.7692 4.7260

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Figure below shows an aircraft fighter. The wing of the aircraft may be modelled as a clamped wing with two lump masses at its centre and tip. The two masses represent the mass of the wing and the missiles. The equivalent model shown in the figure is used to estimate the first two natural frequencies of the wing and therefore the fuselage can be assumed rigid. 24EI If m1 = am, m2 = bm and bending stiffnesses of the beams are k where a = 9.7147 and b = 4.1873 and if w, and wz are the first and second natural frequencies of the system, w2/wz is: x, (t) x2(t) EI т, EI (m2) /2 1/2 3.2719 2.4236 1.3088 1.7692 4.7260
Transcribed Image Text:Figure below shows an aircraft fighter. The wing of the aircraft may be modelled as a clamped wing with two lump masses at its centre and tip. The two masses represent the mass of the wing and the missiles. The equivalent model shown in the figure is used to estimate the first two natural frequencies of the wing and therefore the fuselage can be assumed rigid. 24EI If m1 = am, m2 = bm and bending stiffnesses of the beams are k where a = 9.7147 and b = 4.1873 and if w, and wz are the first and second natural frequencies of the system, w2/wz is: x, (t) x2(t) EI т, EI (m2) /2 1/2 3.2719 2.4236 1.3088 1.7692 4.7260
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