Claude Skills by ashfordeOU

Define the customer and supplier duties and the applicability of the embedded generic requirements of ECSS-E-ST-31-02 clauses 4.2 and 4.3 for two-phase heat transport equipment: resolve which embedded duties bite for the product category and procurement route in hand, settle a jointly held duty against that route rather than by preference, grade the owners the parties actually declared, and refuse a duty dropped without a recorded tailoring agreement. Use when a heat pipe or loop heat pipe pr...

Determine the qualification process and the number of qualification units ECSS-E-ST-31-02 clause 4.4.1 obliges for a two-phase heat transport item: reduce the declared changes against the qualified reference to one category, map that category to a full, delta, source-requalification, similarity or heritage process, size the unit count from the build standards to be covered and the destructive tests that consume hardware, and escalate a heritage claim the declared change contradicts. Use when ...

Determine whether a two-phase heat transport item owes a full qualification programme, a delta programme, or none at all under ECSS-E-ST-31-02C clauses 5.3 and 5.4. Use when the task is weighing a heritage qualification record against the design modifications a new application introduces, deciding which of those modifications are fundamental enough to reopen the whole programme on their own, confirming the requested operating envelope still sits inside the envelope the predecessor was qualifi...

Structure the qualification stage of a two-phase heat transport development and grade the supplier-process quality audits it depends on, per ECSS-E-ST-31-02C clauses 5.5.1 and 5.5.2. Use when the task is ordering the stage activities so a process audit closes before the qualification model is manufactured, working out which declared processes are special processes that owe an audit at all, judging whether an audit is still inside its validity window and was run by an auditor independent of th...

Structure and grade the technical specification content ECSS-E-ST-31-02 clause 5.1 requires of two-phase heat transport equipment: check the four families of content, performance, environmental, interface and test data, against the mandatory topics each owes, then test every individual requirement for a number, a unit, a workable tolerance and a named verification method, and report a topic that is missing separately from a requirement that cannot be closed. Use when a heat pipe or loop heat ...

Define and grade the test programme of a two-phase heat transport item under ECSS-E-ST-31-02C clauses 5.6.1 to 5.6.4. Use when the task is fixing how many test articles a heat pipe or a capillary driven loop owes for its model philosophy, ordering the campaign into the flow its equipment type requires so proof pressure precedes any performance run and the destructive burst comes last, grading the tolerance a facility applies to each set parameter against its allowable band, and checking the d...

Define the qualification temperature and mechanical envelopes and the working fluid of ECSS-E-ST-31-02 clause 4.4.2 and its merit chart for two-phase heat transport equipment: widen the predicted range by the acceptance and then the qualification margin, confirm the declared survival range contains the result, lift the acceptance vibration density and duration to qualification level, and admit only a fluid that stays liquid across the whole envelope, choosing the one whose weakest end is stro...

Evaluate a two-phase heat transport thermal performance test against ECSS-E-ST-31-02C clause 5.6.9. Use when the task is mapping a transport device over its power and temperature envelope: subtracting the parasitic leak to get the power that actually crossed the device, forming the evaporator-to-condenser drop and the transport conductance it cost, grading each point against the capability interpolated at its own operating temperature, confirming every required power and sink-temperature cell...

Determine the type grouping and heritage category of two-phase heat transport equipment, and the qualification depth that follows, per ECSS-E-ST-31-02C clause 4.1 and clause 5.4. Use when a heat pipe, variable conductance pipe, diode pipe or capillary driven loop is offered against a qualified predecessor: compare fluid, envelope, wick, type, application, length and power scaling and operating range, place the item in the unchanged, modified or new-development category, and derive the test se...

Verify a variable conductance heat pipe against its transport, heat-leak, reservoir and temperature-regulation requirements under ECSS-E-ST-31-02C clause 5.5.5.2b. Use when the task is confirming maximum transport at the design temperature, bounding the heat a fully blocked condenser still passes in off mode, deriving the reservoir thermal resistance from a measured rise, grading the evaporator temperature swing across the recorded power and sink range against the control band, and sizing the...

Size the actuator of a spacecraft mechanism so the worst-case resistive torque or force stays under the capability actually available throughout life and travel, per ECSS-E-ST-33-01 clause 4.7.5.3.2. Use when nominal actuator capability has to be derated for low bus voltage, temperature extreme, current limit and end-of-life degradation, compared station by station against the factored resistive demand, turned into a motorization margin at each station, and graded over a travel schedule dense...

Evaluate the anti-creep barriers that keep a fluid lubricant away from sensitive or un-lubricated surfaces, per ECSS-E-ST-33-01C clause 4.7.3.3.3. Use when the task is proving a mechanism's oil cannot reach an optic, a detector, a latch face or a bonded joint: computing the spreading coefficient and Young contact angle of the lubricant on each barrier film, grading band width, continuity and temperature rating, walking every declared migration path to a sensitive surface for a sound intercept...

Size a ball bearing against ECSS-E-ST-33-01C clause 4.7.5.4.6. Use when the peak Hertzian contact stress of a mechanism bearing must be shown inside the allowable for its ring and ball material: forming the ISO 76 basic static load rating from rows, ball count, ball diameter and contact angle, combining the radial and axial limit-load components into a static equivalent load, raising it by the design factor of at least 1.45 before any stress is computed, scaling the peak contact stress off th...

Compute the ball-bearing preload a mechanism needs to survive its mechanical environment under ECSS-E-ST-33-01C clause 4.7.3.4.2. Use when the task is sizing preload so a duplex pair never unloads under the worst-case axial reaction, choosing between a solid and a flexible arrangement and applying the separation factor each one earns, predicting the preload shift differential thermal expansion produces across the hot and cold cases, inferring the installed preload from a measured axial natura...

Evaluate the accuracy, sensor-noise and command-limiting rules a mechanism control system owes beyond loop shaping under ECSS-E-ST-33-01C clause 4.7.8.5. Use when a positioning allocation, a sensor description and a commanded profile exist and the design must be shown to deliver the accuracy without passing more noise than it can afford: sums systematic contributors directly, combines random ones in quadrature with a coverage factor, converts encoder resolution and noise density into error te...

Verify that a mechanism control loop places its bandwidth clear of the driven structure's flexible modes and keeps the damping ECSS-E-ST-33-01C clauses 4.7.8.3 and 4.7.8.4 require. Use when a closed-loop bandwidth, a modal survey and a separation factor exist and the loop must be shown not to excite a boom, panel or gearbox mode: derives the bandwidth ceiling the lowest mode sets, turns each modal damping ratio into the resonant peak the loop sees, compares that peak plus the gain margin with...

Compute the closed-loop stability margins of a mechanism control system and grade them against ECSS-E-ST-33-01C clauses 4.7.8.1 and 4.7.8.2. Use when the task is finding the gain crossover and phase crossover of a tabulated open-loop response, reading the phase margin up from the half-turn lag and the gain margin as the reciprocal magnitude, repeating that across hot, cold, inertia and end-of-life friction cases, retaining the smallest of each, and grading them against the factor-of-two gain ...

Design a solid-lubricant film for a mechanism interface under ECSS-E-ST-33-01C clause 4.7.3.2. Use when the task is applying a dry lubricant such as molybdenum disulphide, tungsten disulphide, graphite or PTFE to a hot, slow or low-cycle duty: confirming the duty belongs in the dry domain rather than the fluid one, matching the solid to vacuum and to humid ground air, sizing the film by Archard wear over the sliding distance to a wear-through cycle count, and holding the deposition process to...

Design the electrical circuits of a spacecraft mechanism and verify them against ECSS-E-ST-33-01C clauses 4.7.7.1 to 4.7.7.3 and 4.7.7.5. Use when the task is choosing connectors that cannot be cross-mated, keeping power, signal and pyrotechnic families out of one shell, derating contact current for shell occupancy, reserving spare contacts, grading measured insulation resistance at the voltage the requirement is written at, and confirming the dielectric withstand voltage and leakage current ...

Compute the fluid lubricant charge a mechanism is filled with under ECSS-E-ST-33-01C clauses 4.7.3.3.1 and 4.7.3.3.2. Use when the task is a high-speed or high-cycle bearing, gear or slip ring lubricated with oil or grease: confirming the duty is in the fluid domain and the fluid covers its temperature range, scaling the reference vacuum mass-loss rate of ECSS-Q-ST-70-02 to the operating temperature, accumulating evaporation, creep, retainer absorption and duty consumption over life, applying...

Determine whether a mechanism needs an inert dry-gas blanket under ECSS-E-ST-33-01C clause 4.2.6, then size the one it needs. Use when operation or storage in ambient air would degrade the mechanism through lubricant oxidation, moisture uptake, corrosion or a friction rise, and the blanket has to be engineered rather than assumed: choosing a gas that is actually inert against the declared driver, computing the enclosure volume exchanges and flush duration that reach a residual target, working...

Design a mechanism gear mesh against ECSS-E-ST-33-01C clause 4.7.5.4.7. Use when a spur or helical stage must be shown good for tooth strength, flank wear, backlash and life together: forming the tangential tooth force from module and torque, computing the Lewis bending stress and the Hertzian flank contact stress, derating both material allowables for the required tooth load cycles, sweeping backlash across the thermal range for the gear-to-housing expansion mismatch, and checking the lubric...

Assess a mechanism design against the general design requirements of ECSS-E-ST-33-01C clause 4.7.2. Use when the task is showing that a mechanism works in ground ambient and in thermal vacuum and survives its whole life cycle: normalising the handling, transport, test, storage, launch and orbit environments, reporting any phase never declared, bounding them into one enclosing envelope, comparing each phase temperature, pressure, humidity, random vibration and shock with the declared design ca...

Verify that every mechanism on a spacecraft is bonded to structure as ECSS-E-ST-33-01C clause 4.7.7.4 requires. Use when the task is grading a bonding schedule: computing each strap's length-to-width ratio against the geometry limit that keeps it a conductor rather than a choke, deriving its end-to-end DC resistance from foil geometry, material resistivity and the joint resistance at both ends, comparing that against the ten-milliohm bond limit, combining parallel bonds, and confirming no mec...

Size the holding function of a spacecraft mechanism for its latched and braked states under ECSS-E-ST-33-01 clause 4.7.5.3.3. Use when a latch preload, a magnetic detent, a powered or unpowered brake or self-locking gearing has to hold against the disturbance of that state, with the minimum uncertainty factors applied in both directions at once so the capability is knocked down while the disturbance is raised, a powered hold refused credit in an unpowered state, and the holding margin reporte...

Evaluate the identification and marking plan for delivered mechanism hardware against ECSS-E-ST-33-01 clause 4.2.4.1. Use when parts, subassemblies and the assembled mechanism all have to leave the factory carrying a readable, unique identity a review can trace back to its parent. Builds each identity from part number and serial, detects a repeated identity and an orphan subassembly, sizes the character height the marking field can support, and routes an item to a shallower method or to an at...

Design the latching, locking and end-stop arrangement of a spacecraft mechanism over its full range of travel under ECSS-E-ST-33-01 clauses 4.7.5.4.3 and 4.7.5.4.4. Use when an end stop has to absorb the kinetic energy of the moving assembly plus the spring energy and drive work still delivered over the travel left at contact, a latch has to capture where the assembly actually arrives without the worst-case overshoot flying past the window, every reachable travel limit needs a stop, and the l...

Evaluate a mechanism against the magnetic cleanliness budget and the electrostatic and electromagnetic protection of ECSS-E-ST-33-01C clause 4.7.7.8. Use when the task is combining residual dipole moments by root-sum-square or worst-case alignment, deciding which combination the design actually earns, converting the governing moment into the stray field at a magnetometer, grading every conductive surface against the charge-bleed resistance window, and comparing a drive's switching harmonics w...

Evaluate a mechanism design against the maintenance-free intent of ECSS-E-ST-33-01 clause 4.2.4.4 and grade the exceptions the customer has actually approved. Use when a design declares servicing, relubrication, inspection or replacement actions and the programme needs to know which of them are permitted and which are an open non-compliance. Counts how often each declared action falls inside the mission, requires a referenced and dated customer approval plus declared access and tooling for an...

Compute the yield and ultimate margins of safety a spacecraft mechanism structure has to show under ECSS-E-ST-33-01 clauses 4.7.5.2.5 and 4.7.5.2.6. Use when the factors of safety the verification route carries have to be applied to the design limit load rather than to the allowable, a special factor added for a joint or material that fails without warning, a separate margin taken against yield and against ultimate, a yield margin refused for a category that has no yield point, and the govern...

Audit a mechanism material against the constraints of ECSS-E-ST-33-01C clauses 4.5.2.2 to 4.5.2.10. Use when a selected material still has to survive where it sits and harm nothing around it: refusing a fungus-nutrient left untreated through humid ground storage, grading limiting oxygen index against the atmosphere it will burn in, ruling out unstable materials and containing toxic ones, holding a surface in an optical path to its reflectance limit, comparing a degradation threshold with the ...

Assess a candidate material list for a mechanism against the selection route of ECSS-E-ST-33-01C clause 4.5.2.1, which runs through ECSS-Q-ST-70 clause 5 and takes the allowables guidance of E-ST-32-08. Use when deciding which candidates may go into a moving assembly and what each one still owes: grouping them by selection route, grading vacuum mass loss and condensable volatiles, holding a susceptible stress-corrosion category to a written justification, turning a typical strength into a des...

Design a mechanism cable drive so its preload, flexure life and end fittings reach the required life under ECSS-E-ST-33-01C clause 4.7.3.4.3. Use when the task is setting a preload high enough that the returning run never goes slack under the drive force, checking the pulley-to-cable diameter ratio against the bend-ratio floor, forming the outer-strand bending stress, accumulating the flexure passes the mission demands and comparing them with the allowable bends at the tension ratio actually ...

Size a mechanism part so it meets its mechanical performance and withstands every specified environment over the design lifetime, under ECSS-E-ST-33-01C clause 4.7.5.1. Use when the task is combining axial, bending and shear stress into a von Mises value for each load case, knocking the material allowable down for temperature, ageing, radiation and surface condition before any margin is taken, computing separate yield and ultimate margins against their own safety factors, accumulating Miner d...

Verify the mechanical clearances of a mechanism against ECSS-E-ST-33-01C clauses 4.7.5.4.8 and 4.7.5.4.9. Use when moving parts, adjacent static parts and multi-layer insulation must be shown never to touch: combining each interface tolerance stack as an arithmetic worst case or a root-sum-square, subtracting thermal distortion, load deflection and mechanism excursion from the nominal gap, raising the MLI requirement to the inflated blanket envelope plus its standoff rather than the compresse...

Size the passive thermal design that keeps a mechanism inside its operational temperature band under ECSS-E-ST-33-01C clauses 4.7.4.1 and 4.7.4.2. Use when the task is solving the hot and cold steady-state mechanism temperature from its own dissipation, the absorbed flux, a conductive path and a radiative coupling to the sink, sizing the conductance an interface would need to hold a failing case at its limit, converting the interface gradient into a thermo-elastic distortion and grading it ag...

Define the mission phases and the environment envelope that drive a mechanism design, per ECSS-E-ST-33-01C clause 4.3. Use when the design inputs have to be pinned down before any sizing starts: listing the phases with their durations, demanding a stated value in every environment category instead of reading a silent field as a zero, enveloping the thermal extremes, random vibration and shock while accumulating radiation dose and actuation cycles across the whole mission, raising each envelop...

Design an MLI blanket over a moving mechanism so its cut-outs, clearances and grounding never impede the motion, under ECSS-E-ST-33-01C clause 4.7.4.3. Use when the task is stacking blanket thickness, sweep envelope, tolerance chain and billow allowance into a required clearance and comparing it with the gap available, sizing a cut-out the swept path passes through without its edge entering that path, converting the open-area fraction into an effective emittance and a parasitic leak, and conf...

Derive the factored resistive torques and forces a mechanism actuation function has to be sized against under ECSS-E-ST-33-01 clause 4.7.5.3.1. Use when every resistive contribution, from dry friction and harness stiffness to stiction, seal drag, spring hysteresis and inertia, needs the minimum uncertainty factor its own kind and knowledge basis carry, applied line by line instead of once to the sum, and evaluated at end of life and at the worst point of travel rather than at a nominal mid-st...

Evaluate the operational constraints and the mounting interface of a mechanism against ECSS-E-ST-33-01C clauses 4.5.3 and 4.6. Use when the task is showing that a mechanism stays inside the contamination, magnetic-cleanliness and grounding-continuity allowances its context imposes while its interface survives expansion mismatch: accumulating deposition from every declared source over life through the geometric view factor, summing static and moving-part dipole moments into the field seen at t...

Size the over-current protection of a mechanism drive circuit and the strain relief of the harness crossing its moving joint, per ECSS-E-ST-33-01C clauses 4.7.7.6 and 4.7.7.7. Use when the task is placing a fuse or limiter rating between the worst-case operating current and the derated wire capacity, showing a stall is interrupted before the insulation reaches its limit or the wire carries it indefinitely, and confirming the service loop covers the travel without going taut, stays above the c...

Assess a heritage parts claim and the interchangeability of replaceable mechanism items against ECSS-E-ST-33-01 clauses 4.2.4.2 and 4.2.4.3. Use when a mechanism reuses previously qualified parts whose application environment differs from the one they were qualified to, or when a group of replaceable items is declared interchangeable on the bench. Forms an exceedance per environmental and duty parameter, separates an accepted heritage from a delta qualification and from a full requalification...

Design a spacecraft release or locking device and verify it against ECSS-E-ST-33-01C clauses 4.7.5.4.12 and 4.7.6. Use when the task is choosing between pyrotechnic and non-explosive actuation, showing that no single initiator or firing path leaves an appendage restrained, grading the induced separation shock at each neighbouring unit against its qualified level, confirming the lock carries the worst-case launch preload positively rather than by friction, and allocating released particulate a...

Evaluate the reliability and redundancy case of a mechanism against ECSS-E-ST-33-01C clause 4.2.5. Use when the task is showing both that a mission-critical mechanism reaches the reliability figure it was apportioned and that no single failure quietly carries the mission: building each functional block from its failure rate and redundancy scheme, combining simplex, active-parallel and cold-standby blocks over the mission duration, finding the blocks whose loss defeats a critical function with...

Assess a separable contact interface against ECSS-E-ST-33-01C clause 4.7.5.4.5. Use when a connector, slip-ring brush or separable mechanical contact must survive its mate-demate life: applying the life factor to the required cycles, spending the noble plating with an Archard model over two wipes per cycle, reading the residual thickness left over the underplate, converting normal force into a Holm constriction resistance plus a film term against the budget, and grading fretting exposure from...

Audit the specific mechanism specification register of a development against ECSS-E-ST-33-01 clause 4.2.2 and its Annex A content list. Use when a platform carries several mechanisms, each owes its own specification, and every one of those has to be agreed with the customer before the design is frozen. Maps mechanisms to specifications one to one, reports a mechanism with none and a specification stretched across two, scores Annex A content heading by heading, and accepts a customer agreement...

Define the load and allowable basis a spacecraft mechanism is structurally dimensioned on under ECSS-E-ST-33-01 clauses 4.7.5.2.1 to 4.7.5.2.4. Use when limit loads have to be gathered from every mission event, raised by the model factor their knowledge basis carries and by the project factor, enveloped into the one case that actually sizes the part, and paired with a material allowable whose statistical basis matches the redundancy of the load path and the temperature the part really sees. T...

Verify the kinematic performance a mechanism owes per position change, under ECSS-E-ST-33-01C clause 4.4. Use when every commanded position change has to be shown achievable and each function graded against what was specified: taking the travel, the allowed window and the velocity and acceleration limits, deciding whether the profile saturates its velocity limit or stays triangular, computing the shortest time and the peak velocity that follow, reporting the time margin left in the window, su...

Evaluate a threaded joint and its locating devices against ECSS-E-ST-33-01C clause 4.7.5.4.10. Use when a mechanism fastener must be shown to use a stress-corrosion-resistant material, a controlled tightening method and a positive locking feature: screening the material category against the expected one, subtracting prevailing torque before any preload is derived, widening the preload band by wrench tolerance and nut-factor spread, taking embedment and thermal relaxation off the minimum, and ...

Evaluate the wear and material-transfer life of a mechanism contact pair against its mission cycles under ECSS-E-ST-33-01C clause 4.7.3.4.1. Use when the task is accumulating the sliding distance the pair really sees, derating the wear coefficient to the worst-case vacuum, temperature and contamination combination instead of the nominal one, converting that into an Archard wear depth and comparing it with the tighter of the allowable depth and the remaining dry-film thickness, judging whether...