Teorētiskais kreisēšanas ātrums V_C (Vk)
Šo ātrumu var dabūtu no horizontāla lidojuma režīmu aerodinamiskā aprēķina, un tas it maksimāls ātrums ierobežojuma augstumā.
Teorētiskais pikēšanas ātrums V_D (Vp)
Ir lielāks par kreisēšanas ātrumu uz kādu fiksētu lielumu ΔV_max
V_D=V_C+ΔV_max (3)
Kursa darba aprēķinos pieņemt
ΔV_max=50 km/h
Kas bieži izmanto praksē
Atmosfēras plūsmas vertikālas brāzmas aprēķins lidojuma augstumā
Maksimāls vertikālas brāzmas ātrums lidojumam ar ātrumu V_B
Wing-type thin-walled beam stress and strain at static load
1. LW aim: Experimentally validate the calculation of the stress-strain state of the wing-type thin-walled beam at static load
1.1. Measure strain in three zones of the thin-walled beam cross-section and to determine the stresses in these zones
1.2. Compare the stress component (direct and shear stress), obtained using the theory of thin-walled beam, with test results
2. Test setup and initial data
2.1. Brief description of test setup
Object of test is the wing-type thin-walled beam that consists two spars, skin and five ribs connected with the rivet-joints. The shape of all cross-sections of a beam is the same and has two axis of symmetry. One tip of a beam is fixed by a setup support, but opposite tip is free cantilever beam). At this tip there is a special node for loading. General view of the test setup is shown below.
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