Expert-level flight mechanics covering aircraft equations of motion, stability and control, performance, handling qualities, and flight simulation.
インストールする前に、エージェントに与えられる指示の中身を確認できます。
Six DOF: three translational and three rotational equations in body axes. Body axes: x forward, y right, z down, aligned with aircraft. Euler angles: roll phi, pitch theta, yaw psi relate body to inertial frame. Linearization: small perturbation equations about trim condition. Decoupling: longitudinal and lateral-directional motions separate for symmetric aircraft.
Stick-fixed neutral point: CG location for neutral pitch stability. Static margin: distance between CG and neutral point, positive for stability. Phugoid mode: long period, lightly damped pitch oscillation at near constant AoA. Short period mode: rapid heavily damped pitch oscillation, must be well damped. Pitch stiffness: Cm_alpha negative for stable aircraft.
Dihedral effect: roll restoring moment from sideslip, Cl_beta negative. Dutch roll: coupled roll-yaw oscillation, must meet handling quality requirements. Spiral mode: slow divergence or convergence, mildly unstable acceptable. Roll mode: first order roll response to aileron input.
Thrust required: TR = W times CD over CL. Maximum range: fly at maximum L over D for jet aircraft. Maximum endurance: fly at minimum power required. Rate of climb: RC = excess power over weight. V-n diagram: flight envelope, structural and aerodynamic limits.
| Pitfall | Fix |
|---|---|
| Wrong body axis convention | Define axes clearly before writing equations |
| Ignoring propulsion effects on stability | Slipstream and thrust line affect trim and stability |
| Linear analysis outside valid range | Check perturbation amplitudes against nonlinear effects |
| Missing ground effect in takeoff analysis | Ground effect increases L/D near runway |
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概要と使いどころ
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日本語の概要は準備中です。原文の説明を表示しています。
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日本語の概要は準備中です。原文の説明を表示しています。
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日本語の概要は準備中です。原文の説明を表示しています。
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日本語の概要は準備中です。原文の説明を表示しています。