Attachment_C_-_Ultimate_Limit_State_Load_Cases.pdf

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Segmented Ultralight Morphing Rotor Demonstration Field Test Blade Set
Solicitation number
RFC-7-70309
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Request_for_Proposal_(RFP)_No._RFC-7-70309.pdf PDF
Attachment_D_-_Proof_Load_Testing.pdf PDF
Attachment_No._3_-_Deliverable_Summary_Table_.xlsx XLSX spreadsheet
Attachment_No._1_-_Appendix_A_Statement_of_Work.pdf PDF
Attachment_B_-_Adapters_and_Hardware.pdf PDF
Attachment_A_-_Blade_Specifications.pdf PDF
Attachment_No._2_-_Sample_Subcontract.pdf PDF

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Attachment C: Ultimate Limit State Load Cases The loads shown in Table 3 can be used for design and selection of the adapter and hardware for blade-to-adapter connection. Please note these loads are not factored, the Subcontractor shall apply the specified minimum partial safety factors for the design and selection of the mounting hardware and adapters.

Table 1. Unfactored Loads at the blade root.

RootFxb1 RootFyb1 RootFzb1 RootMxb1 RootMyb1 RootM1 LOAD

PSF

Parameter Type DLC Name (kN) (kN) (kN) (kN·m) (kN·m) (kN·m)

RootFxb1 Minimum DLC 1.4 - 2.4662E+01 - 1.6324E+00 2.3190E+01 3.6440E+01 - 2.4930E+02 2.5195E+02 1.35 RootFxb1 Maximum DLC 2.2 2.1170E+01 - 3.7210E+00 3.7640E+01 4.7770E+01 2.4253E+02 2.4719E+02 1.10 RootFyb1 Minimum DLC 5.1 6.2519E+00 - 8.7065E+01 1.1650E+01 4.9980E+02 6.5980E+01 5.0414E+02 1.35 RootFyb1 Maximum DLC 5.1 7.7620E+00 4.5370E+01 - 1.8090E-01 - 5.4370E+02 6.2030E+01 5.4723E+02 1.35 RootFzb1 Minimum DLC 5.1 4.9383E+00 - 1.8589E+01 - 1.9471E+01 5.8160E+02 7.2570E+01 5.8611E+02 1.35 RootFzb1 Maximum DLC 1.3 - 1.3323E+01 - 4.6342E+00 7.1105E+01 4.0240E+01 - 1.3750E+02 1.4327E+02 1.35

RootMxb1 Minimum DLC 5.1 - 8.7390E+00 3.9353E+01 - 6.3440E+00 - 6.2348E+02 - 8.2220E+01 6.2888E+02 1.35 RootMxb1 Maximum DLC 5.1 - 3.2100E+00 - 4.3533E+01 - 1.2660E+01 6.9759E+02 - 2.2210E-01 6.9759E+02 1.35 RootMyb1 Minimum DLC 1.4 - 2.4268E+01 - 3.9681E+00 1.3950E+01 5.1740E+01 - 2.6031E+02 2.6540E+02 1.35 RootMyb1 Maximum DLC 2.2 1.9413E+01 - 7.8636E+00 3.8923E+01 7.2040E+01 2.5017E+02 2.6034E+02 1.10

RootM1 Minimum DLC 1.1 - 8.3277E-01 1.4731E-01 8.8140E+00 5.4718E-03 1.1747E-02 1.2959E-02 1.35 RootM1 Maximum DLC 5.1 - 3.2100E+00 - 4.3533E+01 - 1.2660E+01 6.9759E+02 - 2.2210E-01 6.9759E+02 1.35

The indicated load components are blade root shears (RootFyb1 and RootFxb1 along the chord and normal to the chord, respectively), normal force (RootFzb1 along the blade pitch axis), and moments (RootMyb1 and RootMxb1, RootM1, i.e. flapwise, edgewise, and resultant bending, respectively). The load components shall be combined as appropriate to investigate the worst-case stress state.

Minimum Partial Safety Factors:

Loads: as indicated in the table Materials:

Steel: 1.1 Composites: 2.94

Importance factor (consequence of failure): 1

Attachment C: Ultimate Limit State Load Cases
Minimum Partial Safety Factors:

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