ashfordeOU Flight mechanics domain pack (router)
Route here when the task is aircraft performance, range, endurance, glide, takeoff, climb, descent, turn, or static and dynamic stability.
Domain
Flight mechanics: cruise performance (Breguet range and endurance), takeoff performance, climb and descent performance, turn performance, glide performance, static longitudinal stability, lateral-directional stability, and dynamic stability modes analysis.
Sub-skills in this pack
| Path | Skill | When to route to it |
|---|---|---|
| flight-mechanics/performance/breguet-range | Breguet range | cruise range, TSFC, lift-to-drag, fuel fraction, cruise time |
| flight-mechanics/performance/propeller-range | Propeller range | propeller range, PSFC, power specific fuel consumption, propeller efficiency, turboprop range, fuel fraction |
| flight-mechanics/performance/breguet-endurance | Breguet endurance | loiter endurance, holding time, SFC, fuel burn, final weight |
| flight-mechanics/performance/specific-range | Specific air range | specific air range, fuel flow, instantaneous range, fuel burn per sector |
| flight-mechanics/performance/takeoff-performance | Takeoff performance | ground roll distance, lift-off speed, stall speed from wing loading |
| flight-mechanics/performance/landing-performance | Landing performance | landing distance, approach speed, flare, ground roll, stopping distance, reverse thrust, braking coefficient |
| flight-mechanics/performance/climb-performance | Climb performance | rate of climb, excess thrust, climb gradient, time to climb, service ceiling |
| flight-mechanics/performance/descent-performance | Descent performance | descent profiles, glide range, rate of descent, energy management, VNAV step-down planning |
| flight-mechanics/performance/turn-performance | Turn performance | turn rate, turn radius, bank angle, load factor, sustained turn |
| flight-mechanics/performance/glide-performance | Glide performance | glide ratio, descent angle, sink rate, time to descend, unpowered range |
| flight-mechanics/performance/wind-effects | Wind effects | headwind, tailwind, crosswind, wind correction angle, groundspeed, enroute time |
| flight-mechanics/stability-control/longitudinal-stability | Longitudinal stability | neutral point, static margin, pitch stability coefficient |
| flight-mechanics/stability-control/lateral-directional-stability | Lateral-directional stability | dihedral effect, directional stability, vertical tail volume, Dutch roll, roll mode, spiral mode |
| flight-mechanics/stability-control/dynamic-stability | Dynamic stability | short period, phugoid, Dutch roll, spiral, roll subsidence, stability derivatives, damping and frequency |
| flight-mechanics/stability-control/trim-analysis | Trim analysis | stick fixed trim, trim lift coefficient, elevator deflection, trim speed, pitching moment closure |
| flight-mechanics/performance/oei-climb-gradient | OEI climb gradient | OEI thrust, second segment, engine out, approach climb, landing climb gradient |
| flight-mechanics/performance/energy-height | Energy height | specific excess power, energy height, climb/cruise trade, Ps |
| flight-mechanics/stability-control/aileron-reversal | Aileron reversal | control reversal speed, reversal dynamic pressure, torsional stiffness |
| flight-mechanics/stability-control/control-surface-effectiveness | Control surface effectiveness | elevator authority, hinge moment, stick force, elevator deflection, tail volume coefficient, rotation authority |
| flight-mechanics/stability-control/spin-recovery | Spin recovery | spin recovery, autorotation, spin modes, flat spin, incipient spin, post stall departure, anti-spin controls |
| flight-mechanics/handling-qualities/cooper-harper-rating | Cooper-Harper rating | Cooper-Harper rating scale, pilot opinion, handling qualities level, adequate performance, desired tolerances, pilot compensation |
| flight-mechanics/handling-qualities/pilot-induced-oscillation | Pilot-induced oscillation | PIO category, phase lag at crossover, actuator rate limiting, pilot-in-the-loop coupling, phase compensation |
| flight-mechanics/performance/thrust-required | Thrust required | thrust required, power required, level flight drag polar, minimum drag speed, equivalent power |
| flight-mechanics/flight-dynamics-sim/six-dof-simulation | Six-DOF simulation | six degree of freedom, body axis equations of motion, Euler angle rates, quaternion, RK4 propagation, rigid body state |
| flight-mechanics/stability-control/stability-derivatives-avl | Stability derivative estimation | stability derivatives, lift curve slope, wing planform, aspect ratio, sweep effect, Mach correction, tail volume, neutral point, static margin, AVL-style estimation |
| flight-mechanics/stability-control/short-period-mode-analysis | Short-period mode analysis | short period mode, short-period, natural frequency, damping ratio, stability derivatives, flying qualities, level 1 |
| flight-mechanics/handling-qualities/mil-std-1797a | Mil Std 1797a | mil-std-1797a, flying qualities, handling qualities levels, short period damping, dutch roll, phugoid, spiral mode, roll mode, roll performance, flight phase category, aircraft class, cooper-harper band. |
| flight-mechanics/stability-control/phugoid-mode-analysis | Phugoid mode analysis | phugoid period, Lanchester approximation, long-period oscillation, time to half amplitude, airspeed oscillation |
| flight-mechanics/flight-dynamics-sim/point-mass-trajectory | Point-mass trajectory | point-mass trajectory, flight-path angle, RK4 integration, speed-altitude history, vertical-plane profile, climb path integration |
| flight-mechanics/performance/windshear-analysis | Windshear analysis | windshear, microburst, F-factor, downdraft, headwind shear, wind shear hazard, escape guidance, energy height loss, shear encounter |
| flight-mechanics/performance/speed-stability | Speed stability | speed stability, back side of the thrust required curve, region of reversed command, minimum drag speed boundary, trim speed classification, slow flight stability margin |
| flight-mechanics/stability-control/deep-stall-analysis | Deep stall analysis | deep stall, T-tail blanking, alpha lock, post-stall trim, tail blanking factor, separated flow pitch-up, pitch-down recovery authority |
| flight-mechanics/handling-qualities/pitch-bandwidth-criteria | Pitch bandwidth criteria | pitch bandwidth criterion, phase delay tau, bandwidth frequency, phase margin 45 degrees, MIL-STD-1797A bandwidth, short period transfer function, actuator lag, flying qualities level |
| flight-mechanics/performance/rotorcraft-hover-performance | Rotorcraft hover performance | rotorcraft hover, momentum theory, induced velocity, figure of merit, profile power, disk loading, rotor solidity, hover power |
| flight-mechanics/performance/rotorcraft-forward-flight-performance | Rotorcraft forward flight performance | rotorcraft forward flight, Glauert inflow, induced power, parasite power, equivalent flat plate area, best endurance speed, best range speed |
| flight-mechanics/performance/rotorcraft-vertical-climb-performance | Rotorcraft vertical climb performance | rotorcraft vertical climb, climb induced velocity, climb power, maximum vertical rate of climb, axial momentum theory |
| flight-mechanics/performance/rotorcraft-hover-ground-effect | Rotorcraft hover in ground effect | hover in ground effect, IGE induced power, ground effect factor, rotor height over radius, ige hover ceiling |
| flight-mechanics/performance/rotorcraft-tail-rotor-sizing | Rotorcraft tail rotor sizing | tail rotor, anti-torque rotor, main rotor torque, tail rotor thrust, tail rotor power, disk loading |
| flight-mechanics/performance/rotorcraft-blade-flapping-dynamics | Rotorcraft blade flapping dynamics | blade Lock number, hover coning angle, flap frequency ratio, rotor blade flapping, hinge offset, rotor dynamics |
| flight-mechanics/performance/rotorcraft-autorotative-descent | Rotorcraft autorotative descent | autorotative descent, power-off descent, minimum descent rate, rotor energy balance, engine failure descent |
| flight-mechanics/performance/rotorcraft-blade-element-hover-performance | Rotorcraft blade element hover performance | blade element theory, thrust coefficient, torque coefficient, collective pitch, tip loss factor, hover figure of merit |
| flight-mechanics/performance/rotorcraft-axial-descent-flow-states | Rotorcraft axial descent flow states | axial descent flow, vortex ring state, windmill brake state, descent induced velocity, torque reversal, momentum theory reachability |
| flight-mechanics/performance/rotorcraft-lead-lag-dynamics | Rotorcraft lead-lag dynamics | lead lag frequency, lag hinge offset, regressing lag mode, ground resonance clearance, coincidence rotor speed, multiblade modes |
| flight-mechanics/performance/balanced-field-length | Balanced field length | balanced field length, V1 decision speed, accelerate-stop distance, accelerate-go distance, engine-out field length |
| flight-mechanics/performance/rotorcraft-range-endurance | Rotorcraft range endurance | rotorcraft range endurance, hover endurance, cruise endurance, power required fuel closure, best range speed |
| flight-mechanics/performance/rotorcraft-turn-performance | Rotorcraft turn performance | rotorcraft turn performance, helicopter banked turn, turning flight inflow, sustained load factor, power limited bank angle, turn rate |
| flight-mechanics/performance/rotorcraft-main-rotor-sizing | Rotorcraft main rotor sizing | main-rotor disk loading ceiling, radius and solidity closure, ct-over-sigma design point, blade chord, tip Mach |
| flight-mechanics/performance/rotorcraft-forward-flight-flapping | Rotorcraft forward flight flapping | forward-flight-flapping, tip-path-plane-tilt, first-harmonic-flap-response, longitudinal-flapping-angle, lateral-flapping-angle, advance-ratio-flapping, flap-equilibrium-tilt |
| flight-mechanics/performance/rotorcraft-cyclic-pitch-trim | Rotorcraft cyclic pitch trim | rotorcraft-cyclic-pitch-trim, cyclic-pitch-control, tip-path-plane-tilt, trim-inversion, swashplate-cyclic-input, longitudinal-cyclic, lateral-cyclic |
Routing guidance
Cruise range and fuel-fraction questions route to the breguet-range sub-skill; loiter endurance and holding questions route to the breguet-endurance sub-skill; specific air range, fuel flow, and sector fuel burn questions route - Mil-std-1797a questions route to the handling-qualities mil-std-1797a sub-skill. to the specific-range sub-skill.
Propeller and turboprop cruise range questions (power-specific fuel consumption and propeller efficiency with the propeller Breguet range equation) route to the performance propeller-range sub-skill.
Takeoff and ground-roll questions route to takeoff-performance.
Landing distance, approach speed, flare, ground roll, and stopping distance questions route to the landing-performance sub-skill.
Rate of climb, excess thrust, climb gradient, time to climb, and service ceiling questions route to the climb-performance sub-skill.
Descent profile, glide-descent range, sink-rate, and energy management questions route to the descent-performance sub-skill.
Turn rate, turn radius, bank angle, and sustained turn questions route to the turn-performance sub-skill.
Glide ratio, descent angle, sink rate, and time-to-descend questions route to the glide-performance sub-skill.
Headwind, crosswind, wind correction angle, groundspeed, and enroute time questions route to the wind-effects sub-skill.
Neutral point, CG margin, and pitch stability questions route to the longitudinal-stability sub-skill.
Dihedral effect, directional stability, Dutch roll, roll mode, and spiral mode questions route to the lateral-directional-stability sub-skill.
Short period, phugoid, mode damping, and dynamic stability derivative questions route to the dynamic-stability sub-skill.
Stick fixed trim, elevator deflection, trim speed, and pitching moment closure questions route to the trim-analysis sub-skill.
Propulsion, structures, and certification questions route to their domain packs (propulsion, structures, avionics).
One-engine-inoperative, second segment, approach climb, and landing climb gradient questions route to the oei-climb-gradient sub-skill.
Energy height and specific excess power questions route to the performance energy-height sub-skill.
Control reversal speed and reversal dynamic pressure questions route to the stability-control aileron-reversal sub-skill.
Elevator authority, hinge moment, stick force, and takeoff rotation controllability questions route to the stability-control control-surface-effectiveness sub-skill.
Spin entry, autorotation, spin modes, flat spin, incipient spin, and anti-spin recovery control questions route to the stability-control spin-recovery sub-skill.
Cooper-Harper rating scale, pilot opinion ratings, handling qualities level, and pilot compensation assessment questions route to the handling-qualities cooper-harper-rating sub-skill.
PIO category assessment, phase lag at crossover, actuator rate limiting, pilot-in-the-loop coupling, and phase compensation questions route to the handling-qualities pilot-induced-oscillation sub-skill.
Thrust-required and power-required curves for level unaccelerated flight, minimum-drag speed, and the drag polar force balance route to the performance thrust-required sub-skill.
Six-degree-of-freedom rigid body simulation, body-axis equations of motion, Euler angle integration, and RK4 propagation questions route to the flight-dynamics-sim six-dof-simulation sub-skill.
Stability-derivative estimation from wing and tail geometry, lift curve slope with sweep and Mach corrections, and geometry-to-neutral-point questions route to the stability-control stability-derivatives-avl sub-skill.
Short-period natural frequency and damping from stability derivatives, dimensionless derivative conversion, and Level 1 flying qualities checks route to the stability-control short-period-mode-analysis sub-skill.
Windshear and microburst F-factor hazard, downdraft out-climb, energy height loss, and recovery thrust questions route to the performance windshear-analysis sub-skill.
Rotorcraft hover performance questions (rotorcraft hover, momentum theory induced velocity, figure of merit, profile power, disk loading, rotor solidity) route to the performance rotorcraft-hover-performance sub-skill.
Rotorcraft tail rotor and anti-torque questions (main rotor torque, tail rotor thrust, tail rotor radius, tail rotor power) route to the performance rotorcraft-tail-rotor-sizing sub-skill.
Rotorcraft hover-in-ground-effect questions (ground effect factor, IGE induced power, ige-hover-ceiling, rotor height over radius) route to the performance rotorcraft-hover-ground-effect sub-skill.
Rotorcraft vertical climb questions (vertical climb momentum theory, climb induced velocity, climb power required, maximum vertical rate of climb) route to the performance rotorcraft-vertical-climb-performance sub-skill.
Rotorcraft forward flight questions (Glauert inflow, induced power, parasite power, equivalent flat plate area, best endurance speed, best range speed) route to the performance rotorcraft-forward-flight-performance sub-skill.
Rotorcraft blade dynamics questions (blade Lock number, hover coning angle, flap frequency ratio, blade flapping, rotor dynamics) route to the performance rotorcraft-blade-flapping-dynamics sub-skill.
Rotorcraft autorotative descent questions (power-off descent, minimum descent rate, rotor energy balance, engine failure descent) route to the performance rotorcraft-autorotative-descent sub-skill.
Rotorcraft blade-element hover performance questions (thrust coefficient, torque coefficient, collective pitch, tip loss factor, hover figure of merit) route to the performance rotorcraft-blade-element-hover-performance sub-skill.
Rotorcraft axial-descent flow-state questions (vortex-ring band, windmill-brake state, descent induced velocity, torque reversal) route to the performance rotorcraft-axial-descent-flow-states sub-skill.
Rotorcraft lead-lag dynamics questions (lag frequency ratio, regressing lag mode, ground-resonance clearance, coincidence rotor speed) route to the performance rotorcraft-lead-lag-dynamics sub-skill.
main-rotor disk loading ceiling, radius and solidity closure, ct-over-sigma design point, blade chord, tip Mach questions route to the performance rotorcraft-main-rotor-sizing sub-skill.
Steady forward-flight rotor flapping questions (first-harmonic flap equilibrium, tip-path-plane tilt, longitudinal and lateral flapping angles vs advance ratio, flap-equilibrium tilt) route to the performance rotorcraft-forward-flight-flapping sub-skill; hover-state coning, Lock number and flap frequency ratio stay with rotorcraft-blade-flapping-dynamics.
Rotorcraft cyclic trim questions (longitudinal and lateral cyclic pitch inputs, swashplate cyclic, cyclic required to hold a target tip-path-plane attitude, trim inversion) route to the performance rotorcraft-cyclic-pitch-trim sub-skill; collective-only flap equilibrium stays with rotorcraft-forward-flight-flapping.
Install
To install only this pack, copy or symlink each leaf folder above into your host's skills directory (see README Install for per-host commands).
Phugoid period, damping, and time to half amplitude questions route to the stability-control phugoid-mode-analysis sub-skill.
Point-mass climb trajectory and flight-path-angle history questions route to the flight-dynamics-sim point-mass-trajectory sub-skill.
Speed stability, the back side of the thrust-required curve, the region of reversed command, and slow-flight trim stability questions route to the performance speed-stability sub-skill.
Deep stall, T-tail blanking, alpha lock, and post-stall trim recovery questions route to the stability-control deep-stall-analysis sub-skill.
Pitch bandwidth and phase-delay flying qualities criterion questions route to the handling-qualities pitch-bandwidth-criteria sub-skill.
Balanced-field-length questions (V1 decision-speed balance between the accelerate-stop and the accelerate-go distance over the obstacle, engine-out field length) route to the performance balanced-field-length sub-skill.
Rotorcraft fuel-closure questions (hover endurance from the weight-decay power integration, cruise range and endurance over the power-required curve, best-range speed pick) route to the performance rotorcraft-range-endurance sub-skill.
Rotorcraft banked-turn questions (momentum-theory turning-flight inflow at n-times weight, banked-turn power breakdown, sustained load factor from available power, turn rate and radius) route to the performance rotorcraft-turn-performance sub-skill.