Claude Skills by ashfordeOU

Derive the acceptance case for a lot of additively manufactured parts, class by class. Use when a build lot is presented for acceptance under ECSS-Q-ST-70-80C: read the density, porosity and surface limits the part class sets, confirm the mandatory screens that class owes were actually performed, size the sampling plan from the protection demanded rather than a rule of thumb -- the smallest sample whose exact hypergeometric chance of accepting a lot at the limiting quality stays under the tol...

Determine the build orientation and plate placement of an additively manufactured part. Use when candidate orientations have to be compared before a job is nested and the choice has to be defended on properties rather than on packing: rotate each candidate's surface normals into the machine frame, measure the down-facing area left below the self-supporting angle, separate support that lands on a surface the design marked critical, measure build height and the bonded span presented to the plat...

Evaluate the removal, depowdering and cleaning of an additively manufactured part. Use when unfused powder may still be inside it: weigh the part against its nominal solid mass and read the excess as trapped powder, grade every internal passage on bore against powder size, length against bore and the number of open ports it can flush through, size the cut that frees it from the plate against kerf, distortion and datum uncertainty, confirm stress relief came first, grade cleaning residue per u...

Manage the reuse and blending of metallic powder feedstock for powder bed fusion under ECSS-Q-ST-70-80C: build a blend from virgin and previously used lots, compute the mass-weighted oxygen content, particle size, fines fraction and virgin fraction alongside the worst-case reuse count, compare each against the declared reuse limits, derive the characterisation the blend owes from its cadence and the triggers that fired, and close with an accept, accept-after-test or reject disposition. Use wh...

Evaluate whether a declared additive-manufacturing parameter window is qualified by the coupon campaign actually run. Use when a window is taken into service, or brought back after a machine or feedstock change, and the evidence has to be graded rather than assumed: grade every run's recorded parameters against the window, treat an unrecorded parameter exactly like an excursion, demand a build at each bound and expect one in the interior, check each required characteristic was measured and me...

Assess whether the support structures on an additively manufactured part can be removed without damaging it, and by which method. Use when a support layout is reviewed before release or a removal route has to be planned: reduce each contact footprint to the area an interface style actually fuses, form the force needed to break it against the load the local section can carry, choose break-off, machining or wire cutting from access and those forces, escalate a break-off that would yield the par...

Evaluate the surface condition of an additively manufactured part against its specification. Use when a roughness record has to be graded surface by surface: refuse an Rz reading compared with an Ra limit, grade every reading rather than the mean, work out what the process actually leaves at each overhang angle and separate a surface that failed from a limit no as-built surface at that angle can meet, count adhering partly fused particles per unit area, confirm every declared surface was meas...

Build a clause-by-clause compliance matrix against ECSS-Q-ST-80C Rev.2 as a draft for human sign-off: join the clause list to an evidence index of document, section, status and justification, set each clause to compliant, partially compliant, not compliant or not applicable, pre-fill clauses tailored out for the software category, raise gaps such as missing evidence, compliance claimed without a reference and not-applicable claims that contradict the tailoring, summarise coverage, and render ...

Plan and audit the software product assurance evidence owed at each milestone review under ECSS-Q-ST-80C Rev.2: resolve the documents a review owes for the software category and project scope from the clauses that drive them, grade a submitted review pack for missing, immature and unplanned items, list the evidence kept continuously rather than per review, build the software product assurance milestone report skeleton, and find the first incomplete review. Use when a review data pack is assem...

Assess existing software and programmable devices for qualification under ECSS-Q-ST-80C Rev.2: sort an item as supplier heritage, customer-furnished, COTS, MOTS, freeware or open source, grade its quality-level evidence, suitability and security aspects into corrective actions for the software reuse file, choose reverse engineering or service history to recover missing evidence and grade that history, check open-source licences against how the product is distributed, check a component built f...

Audit software configuration management and the problem and nonconformance chain under ECSS-Q-ST-80C Rev.2 from the assurance side: grade the configuration management plan for regeneration from backup, branching and merging, change control, corruption protection and integrity, check the controlled-document register, check a delivery label, configuration file and release document and recompute the integrity value from the delivered bytes, check the configuration file against each milestone bas...

Classify space software into criticality categories A to D from the severity of the functions it serves and the compensating provisions in place, then derive the ECSS-Q-ST-80C Rev.2 tailoring matrix for that category: which software product assurance requirements apply, apply in reduced form, drop out, or follow the security sensitivity instead. Summarise the matrix per requirement group, list what relaxes when a category is lowered, and resolve a product's category from its components. Use w...

Perform and audit the software dependability and safety analysis of ECSS-Q-ST-80C Rev.2: grade a software FMEA worksheet for missing effects, unmitigated severe failure modes and mitigations with no requirement, raise components to the strictest category when failures can cross an unsegregated link or shared resource, check the hardware-software interaction analysis (HSIA) for hardware failures with no software requirement or no passing verification, track analysis recommendations and export ...

Audit software process assurance under ECSS-Q-ST-80C Rev.2 clause 6: walk the life cycle reviews to the first open gate and the work that ran ahead of it, check the handling of critical software against its fixed obligations and the justified project measures, check verification independence by category, grade a reuse candidate and an automatic code generator, and triage nonconformances and software problem reports against the review board. Use when a supplier's development process is audited...

Draft and audit the software product assurance programme and its plan (SPAP) under ECSS-Q-ST-80C Rev.2: grade a plan against the Annex B outline with conditional sections switched on by scope, check the assurance organisation for a named lead, an independent reporting line and backed supplier delegation, check supplier flow-down and monitoring against the software category, grade methods and tools by their effect on the executable, and state the plan maturity owed at each review. Use when a s...

Define and evaluate the software product quality objectives and metrication programme of ECSS-Q-ST-80C Rev.2 clause 7.1: hold a metric catalogue with ceilings and floors, set thresholds per criticality category with project overrides traced to their source, measure comment density and a cyclomatic complexity estimate from source text, grade a measurement set and per-module metrics for pass, fail and missing, and read software maturity from the problem-report trend. Use when quality targets ar...

Assess software security assurance under ECSS-Q-ST-80C Rev.2, the transversal security-sensitivity dimension that Revision 2 added beside the criticality category: decide which components are security sensitive from their confidentiality, integrity and availability impacts, list the security clauses that apply, including those that return for category D, spread sensitivity over links without segregation and flag criticality versus sensitivity conflicts, check the extra measures chosen for sen...

Audit supplier selection and the control of procured and customer-furnished software under ECSS-Q-ST-80C Rev.2: grade a supplier selection record, build and check the flow-down package a lower-level supplier receives for its role, criticality category and security sensitivity, grade supplier monitoring by milestone, check each procured item for ordering and receiving inspection criteria, backup solution, contract terms, configuration registration and exportability, run a receiving inspection ...

Use when determine which qualification tests are required for a pressure component under ECSS-E-ST-32 clause 5.4: compute proof, design-burst, and burst pressures from the Maximum Expected Operating Pressure (MEOP) using material-specific pressure factors; establish the mandatory test sequence covering proof, leak, vibration, pressure-cycling, design-burst, and burst tests; evaluate each individual test result against its acceptance criterion; and report whether the component achieves qualifi...

Use when determine whether a structural item qualifies for the reduced fracture control programme defined in ECSS-E-ST-32C and identify which standard requirements may be modified. Evaluate each candidate by consequence of failure (catastrophic items are excluded), operating stress ratio against the allowable threshold, mission type (crewed versus uncrewed), and material fracture toughness. For eligible items, identify which analysis steps—crack growth calculation, fracture mechanics assessme...

"Use when verify consistency between a reduced structural model and its

Use when verify that a structural finite element reduced model — Craig-Bampton component mode synthesis, Guyan static condensation, or generic superelement — meets ECSS-E-ST-32 clause 4.4 requirements: confirm that all boundary interface nodes and their active degrees of freedom are completely defined, check that the retained internal mode set covers the target analysis frequency with the required margin, validate mass and frequency accuracy against the allowable fractional error limits, dete...

"Use when verify that a finite element model passes rigid-body checks

Use when verify a riveted structural joint per ECSS-E-ST-32C clause 4.6.2.15: distribute applied shear and in-plane moment to individual rivets using the centroid method, compute rivet shear force and sheet bearing stress for each fastener, determine the inter-rivet buckling critical stress for the skin panel between fasteners, and evaluate crippling stress for each thin-walled outstanding flange element. Flag any rivet or panel element with a negative margin of safety before issuing a stress...

Use when verify safe-life fracture-control compliance for structural items per ECSS-E-ST-32C clause 6.3.2: categorize each structural item as safe-life or fail-safe, gather crack-growth analysis and test evidence for every safe-life item, confirm that crack-growth life meets or exceeds the design life multiplied by the applicable scatter factor, check that residual strength at end-of-life crack size meets the limit-load requirement, and flag items with missing analysis, test documentation, or...

Use when scoping European space software work per the ECSS series: classify space software criticality (A-D) from failure consequence, size the assurance and verification rigor for the category, gate lifecycle phases (requirements through acceptance) on their review records, and scope heritage-reuse evidence. ECSS-E-ST-40C Rev.1 governs software engineering, Q-ST-80C Rev.2 software product assurance, and the series is the European space procurement baseline. Trigger: ECSS, space software, E-S...

Use when you must plan the ECSS-E-ST-40C Rev.1 verification of spacecraft flight software: select the verification method (test, analysis, inspection, review) for each requirement category (functional, performance, interface, resource, safety, data), determine the verification depth and independence required by the software criticality, and list the verification records each method must produce. Produces the per-requirement method map, the criticality depth verdict, and the record list that c...

Use when evaluate fracture control compliance for special structural items under ECSS-E-ST-32C §8.5–8.9: categorize each item as non-metallic, rotating machinery, glass, fastener, or EDM-treated alloy; apply the category-specific acceptance method (proof-test factor ≥ 1.5 for non-metallics, burst-speed margin ≥ 1.25 for rotating parts, proof-stress ratio ≥ 1.3 for glass, grade-and-installation exemption check for fasteners, recast-layer removal ≥ 0.1 mm for EDM alloys); and confirm each item ...

"Use when you need to verify static-analysis output from a CalculiX

Use when verify stress, strain, and stability analysis results against Design Yield Load (DYL) and Design Ultimate Load (DUL) at all structural levels per ECSS-E-ST-32C clause 4.6.2.3: categorize each structural element into the applicable analysis tier, compute the margin of safety for every load-case and structural level, confirm stability reserve factors for buckling-critical elements, and flag any negative margin as a non-compliance finding. Apply to calculix-linear, calculix-nonlinear, a...

Use when assess static structural test compliance for a spacecraft or launch vehicle structural assembly under ECSS-E-ST-32C clause 4.6.3.7: determine the required test load from the design limit load and the applicable load factor (qualification ultimate, qualification yield, or acceptance proof), generate the incremental load-application sequence with hold steps, compute margin of safety for each critical load case, and evaluate the success criteria covering no fracture at the test load lev...

Use when assess stiffness, alignment stability, and dynamic behaviour of a spacecraft structure against ECSS-E-ST-32C clauses 4.3.5–4.3.6: verify that each structural axis meets its minimum fundamental natural frequency requirement, compute the frequency separation margin between structural modes and launch-environment excitation frequencies and flag any margin below the required threshold, confirm that retained modes account for the minimum required fraction of modal effective mass in each d...

"Use when verify strength functionality requirements per

"Use when verify that a structural finite element model handles a uniform

Use when determine the applicable stress-intensity-factor K-solution for a crack geometry in a metallic spacecraft structure under ECSS-E-ST-32C clause 7.2.7: categorize the crack into the matching geometry family (surface semi-elliptical, center through, edge through, corner at hole), retrieve the corresponding solution from ESACRACK or an approved fracture-mechanics compendium, evaluate the boundary-correction factors (Newman-Raju, Feddersen, Tada-Paris-Irwin) for the a/c, a/t, and a/W rati...

Use when derive the stress spectrum at the fatigue-critical location from a load event sequence per ECSS-E-ST-32C clauses 7.2.3–7.2.4: convert each load event in the load spectrum to a stress at the section of interest using cross-sectional area and stress concentration factor, apply rainflow cycle counting to extract stress amplitude and mean pairs, optionally apply a Goodman mean-stress correction to produce a fully-reversed equivalent amplitude spectrum, and aggregate cycle counts by stres...

Use when verify structural data exchange items among design, analysis, manufacturing, subsystem, and test disciplines per ECSS-E-ST-32C clause 4.9: categorize each data item by type (FEM model, CAD geometry, loads file, material card, test result), confirm every sender–receiver pair is authorized by an interface control document, validate that each item carries a version identifier and a traceable source document reference, and flag format mismatches against the allowed set for each item type...

Use when define and audit structural engineering load cases for a space structure under ECSS-E-ST-32C clause 5.2: categorize each load case by type (limit, yield, ultimate, proof, fatigue, or creep-rupture), combine multi-source loads using absolute-sum or SRSS methods, apply scatter factors to account for load environment variability per clause 5.2h, identify sustained loading conditions that trigger creep deformation and creep-rupture assessments, and compute design loads by applying the ap...

Use when determine which structural materials are suitable for a spacecraft application under ECSS-E-ST-32 section 4.5.6: categorize each candidate by family (metallic, composite, ceramic, polymer), evaluate stress-corrosion susceptibility from the ECSS-Q-ST-70-32C rating matrix (1=immune to 4=high—reject or apply protective design above rating 2), assess space environment compatibility against orbital hazards (atomic oxygen, radiation dose, thermal cycling, outgassing), and derive an ACCEPTA...

"Use when define and document the structural functional and performance

"Use when assess the correlation between measured structural dynamic

"Use when determine the structural model philosophy and test campaign

Use when evaluate thermal-environment tolerance and dimensional stability of a spacecraft structure per ECSS-E-ST-32 clauses 4.3.7 and 4.3.13: categorize each structural component by its temperature exposure regime (operating, survival, qualification), compute thermal stresses from coefficient-of-thermal-expansion mismatch and temperature differential, compare computed stresses against material allowables, and verify dimensional changes over short-term (orbital transient), medium-term (missio...

Use when validate a spacecraft structure's thermo-elastic distortion and thermal-cycling test compliance under ECSS E-ST-32 clauses 4.6.3.14–4.6.3.15: check the temperature profile hot and cold soak limits, ramp rate, and soak duration; compute thermal strain and thermo-elastic distortion from the coefficient of thermal expansion and applied temperature delta; compare measured distortion against the design allowable; determine the required number of thermal cycles from design life and qualifi...

Use when verify thermo-elastic and hygrothermal stress/strain levels in a spacecraft structure under ECSS-E-ST-32C clause 4.6.2.11: categorize the load case as thermal-only, hygral-only, or combined; compute free thermal and hygral strains for each structural member or laminate ply; apply the appropriate restraint factor to obtain the induced thermal stress; aggregate hygrothermal force and moment resultants for composite laminates via classical laminate theory; and compute margins of safety ...

"Use when select and agree the structural verification methods for each

Use when assess weld fracture-control compliance for space structural hardware under ECSS-E-ST-32C clause 8.3: categorize each weld by quality level (class A, B, or C according to its stress state, service loading, and criticality), screen weld imperfections against ISO 6520-1 acceptance limits for the assigned class, compute the safe-life fatigue margin by comparing the applied stress-cycle spectrum to the S-N allowable for the weld category, and verify that the NDT method and coverage are s...

Use when assess welded joints under ECSS-E-ST-32C clause 4.6.2.14: categorize each weld by quality class (WQ1, WQ2, WQ3) to derive the joint efficiency factor, compute the allowable normal and shear stresses from the parent material ultimate strength reduced by that efficiency and the applicable safety factor, calculate the effective weld throat area from the joint geometry (butt or fillet weld), determine the applied normal and shear stress components from the design load case, evaluate the ...

Use when you must compute the departure energy of an interplanetary mission from a circular parking orbit: the C3 characteristic energy from a target hyperbolic excess speed and the excess speed back from C3, the injection speed on the departure hyperbola at the parking orbit radius from the vis-viva integral, the injection delta-v above the circular parking speed, the circular parking speed, the parking orbit period, and the declination of the outgoing asymptote from the excess velocity vect...

Use when the task is entry corridor, ballistic coefficient, deceleration loads, convective heating, or parachute descent sizing for an entry vehicle. Size the atmospheric entry, descent, and landing phase of a spacecraft mission: check the entry corridor against the flight path angle, compute the ballistic coefficient beta = m / (Cd * A), estimate the peak deceleration g-load of a steep ballistic entry, apply the Sutton-Graves convective heating correlation q_dot = k * sqrt(rho) * V^3 for the...