Claude Skills by ashfordeOU

Use when you must run an individuals and moving range control chart: compute the moving ranges between successive measurements and the average moving range, build the individuals chart limits from the mean plus and minus E2 times the average moving range (E2 = 2.66), estimate the process standard deviation from the average moving range over the d2 constant (d2 = 1.128), set the moving range chart upper limit at 3.267 times the average moving range, flag the individual values and moving ranges...

Use when you must plan and score an internal quality audit program under an AS9100-style quality management system: compute the audit due date from the last audit date, the base interval and the process risk category, check auditor independence and competence for the assigned audit scope, size the record sample from the lot size and confidence level, and categorize an audit finding by impact severity, containment need and systemic spread. Produces the audit schedule, the auditor assignment ve...

Use when you must plan and score the periodic top-management review process under an AS9100-style quality management system: compute the management review due date from the last review date and the base interval, check the mandatory review input coverage against the presented input set, track the action items from the review decisions, and issue the review verdict from the interval compliance, the input coverage ratio and the overdue action count. Produces the due date, the input coverage rat...

Use when you must evaluate an aerospace measurement system with a gage repeatability and reproducibility (Gage R and R) study: compute the equipment variation EV from the average range, the appraiser variation AV from the spread of appraiser averages, the combined GRR, the part-to-part variation PV, the total variation TV, the percent GRR against the acceptance criteria (under 10 percent acceptable, 10 to 30 percent conditional, over 30 percent unacceptable), and the number of distinct catego...

Use when dispositioning nonconforming parts, running an MRB decision, or checking disposition record completeness for identification, segregation, disposition, disposition authority, and customer notification. Determine and record the disposition of nonconforming aerospace product per AS9100 control of nonconforming output: identify and segregate the part, choose between rework, repair, scrap, use-as-is (derogation), and return to supplier, route repair and use-as-is dispositions through the ...

Use when you must review an incoming aerospace purchase order before acceptance: verify all eight canonical order elements are declared (product identification, spec or drawing revision, quantity and schedule, delivery date, acceptance criteria, special requirements, preservation and packaging, records), classify special requirements into recognized aerospace classes (FAI, delta FAI notification, key characteristic control, provenance evidence, special process approval, source verification, c...

Use when scoping or preparing AS9100 aerospace quality management work: map an audit focus area to the aerospace clauses (operational risk, configuration management, product safety, counterfeit prevention, external providers, special processes), assemble the minimum audit evidence for each clause, and determine when a corrective action record closes a nonconformance. AS9100 is ISO 9001:2015 plus aerospace-specific requirements, so audits demonstrate the QMS against both. Trigger: AS9100 audit...

Use when the task is risk assessment, mitigation planning, or operational risk review rather than dispositioning an actual nonconformance or closing a CAPA. Assess and plan mitigation for aerospace quality risks per AS9100D operational risk management: compute FMEA risk priority numbers from severity, likelihood, and detection ratings, classify RPN bands, score the post-mitigation residual RPN from reduction credits, derive occurrence probability from production history, apply the 5x5 severit...

Use when you must run statistical process control on an aerospace production process: compute the X-bar and R chart control limits from subgroup data with the A2, D3, and D4 constants, estimate the process standard deviation from the average range with the d2 constant, calculate the Cp and Cpk capability indices against the specification limits, and detect out-of-control conditions with the Western Electric rules. Produces the control limits, the sigma estimate, the capability indices, and th...

Use when you must control externally provided processes, products, and services: classify the supplier risk from part criticality and quality and delivery history, derive the required controls (on-site audit, monitoring frequency, delegated verification, flow-down), and check the supplier record for evaluation, approved supplier list, monitoring, re-evaluation, and flow-down completeness before approving the supplier. Produces the risk class, the control set, and the approval verdict that gat...

Use when you must design a variables acceptance sampling plan: map the lot size and inspection level to the sample size code letter, look up the sample size and acceptability constant k, with the maximum allowable percent nonconforming M, for the required AQL from a reduced MIL-STD-414 k-method table, form the Q statistic from the specification limit, the sample mean and the sample standard deviation, and decide accept or reject by comparing Q with k, with the estimated percent nonconforming ...

Use when you must balloon the characteristics of an engineering drawing for an AS9102 first article inspection: assign sequential balloon numbers to every characteristic, map each verification method label to the AS9102 method code (measuring, attribute, functional, visual, analytical), classify each characteristic as key, critical, or standard, and reconcile the balloon count against the form 3 line items and the D-list accountability matrix. Produce the numbered characteristic list, the met...

Use when you must classify a change and determine the AS9102 delta first article inspection (delta FAI) scope: classify part number, material, process, tooling, drawing revision, location, or supplier changes as full new FAI, delta FAI, or no FAI, then scope the affected forms 1, 2, and 3 and the affected characteristics for the delta. Determine whether a full new FAI is required or a delta FAI suffices, and produce the change classification, the delta scope forms, and the affected characteri...

Use when you must schedule a first article inspection (FAI) revalidation per AS9102 practice: compute the revalidation due date from the last FAI date and the revalidation interval, check whether a process, tooling, drawing revision, location, or supplier change triggers a revalidation, and scope the characteristics to re-verify. Produces the revalidation status, the next revalidation date, and the re-verification scope that gate FAI currency. Trigger: fai revalidation, revalidation due date,...

Use when preparing or reviewing an AS9102 first article inspection (FAI) report: determine whether forms 1, 2, and 3 (part accountability, material and special processes, characteristic accountability) are present and acceptable, validate that all nonconformances are closed, classify the FAI as complete or not complete, and check whether a production change triggers a delta FAI. Also scope the characteristic accountability count against the measured population. Trigger: first article inspecti...

Use when you must identify and manage key characteristics for aerospace production variation management: rate each drawing and process-history characteristic record as key or non-key against the documented decision rules, compute the 0-100 KC risk score from the weighted safety, fit/function, tight-tolerance, historical, and downstream signals, assign each KC a variation plan with control method, Cpk target (1.33 default, 1.67 safety-critical), sampling frequency, and verification gate, and d...

Use when you must verify the installation quality of an electrical wiring interconnection system (EWIS) installation during aerospace assembly: compute the conductor bundle fill ratio against the conduit cross-section and check it against the 0.40 fill limit, compute the round-trip voltage drop of the run and its percent of the bus voltage against the 2% drop limit, check the conductor bend radius against the minimum radius factor, and check the separation clearance between the bundle and a n...

Use when you must verify the installation quality of aerospace structural fasteners during assembly: select the grip length for the clamped stack from the available grip increments, check the thread protrusion against the typical protrusion band, compute the clamp load from the applied torque with the torque coefficient, verify the clamp load and the torque scatter band against the joint allowables, check the countersink flushness for flush head fasteners, confirm the swage collar engagement ...

Use when you must verify the installation quality of solid rivets during assembly: select the rivet length from the stack thickness plus a head-style allowance (protruding heads 1.5 diameters, countersunk heads 0.8 diameters), judge the driven shop head geometry against the workmanship bands (driven diameter 1.4 to 1.5 d, driven height 0.4 to 0.5 d), compute the squeeze force needed to upset the rivet against the material flow stress over the shank area, and check the hole fill clearance agai...

Use when you must engineer a composite laminate layup and cure process: build the ply book with orientation, material, and thickness per ply, verify the laminate is symmetric and balanced, design the cure cycle (vacuum application, heat ramp, cure dwell, cool-down, autoclave vs out-of-autoclave vs press pressure), predict degree of cure with an Arrhenius kinetics model integrated over the temperature profile, relate glass transition temperature to degree of cure, and disposition C-scan porosi...

Use when the task is acoustic emission testing, AE monitoring, source location, hit thresholding, or Kaiser/Felicity assessment. Compute acoustic emission inspection parameters for aerospace parts and structures: determine which recorded signals cross the amplitude threshold, group the hits into events with the hit definition time window, compute signal energy, locate the emission source by linear and planar triangulation from sensor arrival times, and evaluate the Kaiser effect and Felicity ...

Use when you must plan and interpret a volumetric X-ray computed tomography (CT) inspection of an aerospace part: compute the geometric magnification and the voxel size from the source, object and detector geometry, check the spatial resolution against the smallest flaw to detect, size the cone beam projection count for the scan, estimate the scan time and the required tube energy for the part material and thickness, convert the measured linear attenuation into CT numbers and classify the mat...

Use when you must plan and execute an eddy current inspection (ET) of an aerospace part and turn probe impedance readings into defect findings: compute the standard depth of penetration from test frequency, electrical conductivity, and magnetic permeability; select the frequency that places a surface or subsurface flaw within the usable penetration band; convert percent IACS conductivity to siemens per meter; estimate the eddy current density ratio and the phase lag at the flaw depth; and int...

Use when you must plan and evaluate a leak test on a fuel tank, accumulator, valve, or sealed enclosure: compute the leak rate in scc per second from pressure decay or vacuum decay measurement, size the test time a gauge resolution needs to catch a target leak, convert a measured helium leak to the air equivalent and back, recommend the leak test method from required sensitivity and access, and disposition the part against the maximum allowable leak rate. Produces the leak rate, the method re...

Use when you must plan and execute a liquid penetrant inspection (PT) of an aerospace part and turn penetrant behavior into inspection decisions: compute the capillary pressure and capillary rise that pull the penetrant into a surface-breaking crack, apply the Washburn equation to estimate penetration depth during the dwell time, size the dwell time that fills a crack of a given width and depth, convert crack opening width to effective capillary radius, and relate bleed-out indication width t...

Use when a task names magnetic particle testing on steel parts, magnetization current selection, field strength, particle sensitivity, magnetic indication, or residual field. Determine magnetic particle inspection (MT) parameters for ferromagnetic aerospace parts and turn particle indications into acceptance decisions: compute the magnetizing current for circular magnetization by head shot or central conductor, size the ampere-turns and coil current for longitudinal magnetization from the par...

Use when you must select a non-destructive testing (NDT) method for an aerospace part from its defect class and material: determine whether the defect is surface, near-surface, or internal, classify the material as ferromagnetic, non-ferromagnetic, or non-conductive, and pick among radiography (RT), ultrasonic (UT), eddy current (ET), liquid penetrant (PT), and magnetic particle (MT) by sensitivity with cost as secondary reporting. Produces the recommended method, the alternates, and the sele...

Use when you must track the qualification and certification status of nondestructive testing personnel: compute recertification due date from certification date and interval, compute the near-vision examination due date from the last vision exam, judge certification currency versus the current date, evaluate upgrade eligibility from held training hours, experience months and passed examination versus required thresholds, and validate that a Level I operator works under a Level II or III super...

Use when you must plan and evaluate a radiographic inspection (RT) for aerospace NDT: compute the geometric unsharpness from the focal spot size, the source-to-object distance, and the object-to-detector distance; size the image quality indicator (IQI) penetrameter and its percent sensitivity; apply the inverse-square law to X-ray or gamma-ray exposure time; check the film density against the 2.0 to 4.0 band; and classify indications such as porosity, cracks, inclusions, and slag. Produces th...

Use when you must plan and interpret a laser shearography NDT inspection on an aerospace composite or bonded part: compute the phase sensitivity of the shearography setup from the laser wavelength and the shear distance, select the shear distance for the minimum defect size of interest, size the vacuum, thermal, or vibration load step for the part stiffness, build the scan plan covering the part with the required overlap, convert a measured phase anomaly from the fringe map into a strain grad...

Use when you must plan or interpret an infrared thermography (IRT) inspection on an aerospace part: decide between active and passive thermography, choose pulsed or flash thermography versus lock-in thermography, compute the surface temperature rise of a semi-infinite solid under a heating pulse, estimate the time of maximum thermal contrast and the observation window for a disbond, delamination, void, or corrosion at depth, evaluate thermal contrast against the noise floor, and size the insp...

Use when you must perform ultrasonic inspection (UT) on an aerospace part and turn measured echo data into defect findings: determine discontinuity depth from time of flight, compute wavelength and near-field length for transducer and frequency selection, convert decibel amplitude drops to echo ratios, and apply Snell's law and beam-spread angles for angle-beam shear-wave setups, then size discontinuities against acceptance criteria using reference reflectors such as flat-bottom and side-dril...

Use when you must plan and execute a visual inspection (VT) of an aerospace part and turn viewing geometry and lighting into inspection decisions: compute the borescope aperture ratio that sets light gathering and image brightness, size the magnification needed to resolve a target surface indication size at a given working distance, apply the inverse-square law to convert lamp intensity to illuminance and meet the lighting requirements in lux or foot-candles, size the field of view and the nu...

Use when a special process must be qualified rather than inspected, when a process change triggers requalification, or when preparing for NADCAP accreditation or AS9100 production control. Assess special process qualification in aerospace manufacturing: determine whether a welding, heat treatment, NDT, surface finishing, or composites process stays qualified under a proposed change by classifying the change type (parameter, equipment, personnel, time interval) against the qualified envelope a...

Use when you must build and check the engineering content of an aerospace weld procedure qualification record (WPS/PQR): compute the weld heat input in kJ per mm from voltage, current, travel speed, and process efficiency; verify heat input, preheat, and interpass temperature against the qualified procedure ranges; confirm the production weld thickness and joint configuration sit inside the qualified coverage; and list the qualification test coupons required for the process and joint type. Pr...

Use when a task concerns aircraft or rocket propulsion: guide the router to the propulsion pack: gas-turbine-cycle Brayton, regenerative-cycle regenerator efficiency, real-cycle-effects component losses, turbofan-cycle turbofan parameters, bypass-ratio-trade bypass design, turbofan-off-design part-power behavior, free-turbine power turbine matching, turbine-stage stage velocity triangles, axial-compressor-stage compressor stage, compressor-map operating maps, multi-stage-compressor stacked st...

Use when you must analyze a single axial compressor stage: compute the specific work, the flow coefficient, the work coefficient, the degree of reaction, and the stage pressure ratio from the blade speed, the axial velocity, the absolute flow angles, and the relative flow angles. Produces the velocity-triangle performance parameters in SI units that gate the compressor stage assessment in the FAR-33 engine design context. Trigger: axial compressor, velocity triangle, degree of reaction, flow ...

Use when you must analyze an axial compressor operating map: identify map points, correct mass flow and rotor speed to standard-day conditions, compute surge margin and operating-line clearance, and judge whether an operating point sits on-map, approaching the surge line, or on the surge line. Produces surge margin percent, corrected flow in kg/s, corrected speed in rpm, and a surge-risk verdict in SI units that gate the engine acceleration and operability review in the FAR-33 engine design c...

Use when you must design or match a multi-stage axial compressor for a gas turbine: compute the overall pressure ratio as the product of the stage pressure ratios, size the stage count required to reach the target pressure ratio from a design stage pressure ratio, account for the reheat factor that inflates the actual work split, size the annulus area from the mass flow, the axial velocity, and the density, distribute the stage work with equal or rising schemes, and correct the rotor speed to...

Use when you must convert between the isentropic and the polytropic efficiency of a compressor or a turbine for performance sizing: recover the polytropic efficiency from the isentropic efficiency at the overall pressure ratio and the reverse, resolve either from inlet and exit total states, restate the stage-count-independent polytropic efficiency at the per-stage pressure ratio, and run the reheat-factor log-sum cross-check of per-stage ratios against the overall ratio. Produces the convert...

Use when you must analyze the cooling flow required to protect a gas turbine blade row: compute the cooling effectiveness from the hot gas total temperature, the allowable blade metal temperature and the coolant supply temperature, convert it into the required coolant-to-gas mass flow fraction with a simplified energy balance, check the fraction against the practical bleed limit, and estimate the achievable metal temperature when film cooling lifts the effectiveness. Produces the effectivenes...

Use when you must analyze a single axial turbine stage: compute the specific work output, the stage loading, the flow coefficient, the degree of reaction, the total-to-total efficiency, and the blade row losses from the blade speed, the axial velocity, the absolute flow angles, and the relative flow angles. Produces the velocity-triangle performance parameters in SI units that gate the turbine stage design review in the FAR-33 engine context. Trigger: axial turbine stage, stage loading, degre...

Use when you must predict the thermochemistry and performance of a rocket propellant combination in the spirit of NASA CEA: compute the adiabatic flame temperature and the chamber conditions from the propellant choice, the mixture ratio, and the chamber pressure with a simplified frozen-flow equilibrium over representative species, derive the characteristic velocity (c-star) and the ideal vacuum and sea-level specific impulse, run a mixture ratio trade, and estimate gamma, the molecular weigh...

Use when you must compute the electrothermal thruster operating point for electric propulsion: useful heating power from input power and heating efficiency, propellant mass flow from chamber temperature rise, ideal vacuum exhaust velocity, thrust, specific impulse, thrust efficiency and thrust-to-power ratio for a resistojet or arcjet family point. Produces a single-point performance summary with the power budget decomposition and a typical-band verdict. Trigger: electrothermal thruster, resi...

Use when you must size or analyze a gridded ion thruster (Kaufman type) for electrostatic propulsion: ion exhaust velocity and specific impulse from the net beam voltage, Child-Langmuir space-charge limit and perveance margin of the accelerator grid, beam current from extraction area and grid transparency, thrust from beam current and from power with total efficiency, and propellant mass for a delta-v mission. Produces the gridded thruster performance summary with thrust, specific impulse, pe...

Use when the task is Hall effect thruster (HET) design, sizing, or performance analysis for electric propulsion: thrust from beam current, mass flow and exhaust velocity, specific impulse, thrust-to-power ratio, the total efficiency decomposition (mass, voltage, current and divergence utilization), anode vs total efficiency, discharge power, xenon vs krypton propellant comparison, and propellant mass for a delta-v mission from the rocket equation. Produces the HET performance summary with thr...

Use when you must compute the steady operating point of a magnetoplasmadynamic (self-field electromagnetic) MPD thruster for electric propulsion: electromagnetic thrust from the discharge current squared via the self-field thrust law T = (mu0/(4 pi)) J^2 ln(r_a/r_c) at the anode-to-cathode radius ratio, exhaust velocity and specific impulse from the propellant mass flow, jet kinetic power, and the reference-only thrust-to-power band verdict for the steady-state self-field MPD class. Produces ...

Use when you must account for how an engine behaves once it is installed on an airframe: compute installed thrust from uninstalled gross thrust minus intake momentum (ram) drag, nacelle and pylon drag, and bleed and accessory power extraction losses, and reconcile the thrust-drag bookkeeping convention with the airframe drag count. Produces the per-term installation loss split, the installed thrust lapse and misalignment effects, and the performance verdict that feeds aircraft sizing and FAR-...

Use when you must analyze an afterburning gas turbine cycle with reheat: compute the afterburner fuel-air ratio from the duct energy balance across the turbine exit and the afterburner exit total temperatures with a combustion efficiency, the reheat fuel flow for the core mass flow, the dry and reheat nozzle exit velocities from a fully expanded ideal isentropic nozzle, the dry and reheat gross thrust, the thrust augmentation ratio, and the specific fuel consumption with and without reheat. P...

Use when you must select the pressure ratio of a simple gas-turbine-cycle that maximizes the net specific work at the cycle temperature limits: compute the max-work pressure ratio from x_opt = sqrt(tau) for the ideal cycle and x_opt = sqrt(tau*eta_c*eta_t) with component efficiencies; check the zero-work limiting ratio, exactly the max-work ratio squared; and judge the verdict that the max-efficiency ratio diverges from the max-work ratio. Produces the ideal and lossy max-work pressure ratios...