Pitch Controllability Based on Airplane Model without Short-Period Approximation-Flight Simulator Experiment-

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  • Sato Osamu
    東海大学大学院工学研究科航空宇宙学専攻 現（株）IHI航空宇宙事業本部
  • Kobayashi Osamu
    東海大学工学部航空宇宙学科

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Other Title
  • 短周期近似を行わない航空機モデルによるピッチ姿勢操縦性評価：　フライトシミュレータ実験による検証
  • タンシュウキ キンジ オ オコナワナイ コウクウキ モデル ニ ヨル ピッチ シセイ ソウジュウセイ ヒョウカ フライト シミュレータ ジッケン ニ ヨル ケンショウ
  • Pitch Controllability Based on Airplane Model without Short-Period Approximation—Flight Simulator Experiment—

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Abstract

Pitch controllability of an airplane is very important for longitudinal flying qualities, therefore, much research has been conducted. However, it has not been clarified why pitch handling qualities degrades in the low speed, e.g. take-off and landing flight phases. On this topic, this paper investigates the effect of several parameters of the short-period mode and phugoid mode using a flight simulator. The results show the following conclusions: The difference between the initial phase angles in two modal components in the pitch attitude response to elevator step input plays the most important role in the pitch handling qualities among modal parameters; and the difference of the two modal natural frequencies has small effect on the pitch controllability even when flight speed decreases.

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