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    <title>Transport Research International Documentation (TRID)</title>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>OPTIMIZATION OF FORWARD FOIL LIFT CONTROL FOR AG(EH) HYDROFOIL CRAFT. VOLUME I: HYDRODYNAMICS</title>
      <link>https://trid.trb.org/View/9966</link>
      <description><![CDATA[The report presents the foil and craft characteristics required by the Grumman Specific Linear Optimal Control Program for hydrofoil craft (SLOCOP). The characteristics are presented in generalized form, compared with certain experimental measurements, and evaluated for the AG(EH). The prediction confidence level is deficient in three significant areas: hinge moment, particularly for flaps; unsteady loading, particularly for orbital motion; and flap cavitation boundaries.  SLOCOP trending studies are underway to establish the sensitivity of the autopilot design to the unsteady loading representation employed.  These studies are intended to identify those unsteady loading responses for which further experimental effort is required for confident autopilot design.  (Author)]]></description>
      <pubDate>Wed, 14 Nov 1973 00:00:00 GMT</pubDate>
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      <title>OPTIMIZATION OF FORWARD FOIL LIFT CONTROL FOR AG(EH) HYDROFOIL CRAFT. VOLUME II: CONTROL</title>
      <link>https://trid.trb.org/View/9967</link>
      <description><![CDATA[The report summarizes the development, to date, of a linear optimal plant plus controller model for hydrofoil craft. Optimization relative to quadratic performance indices is performed on a control system using restricted state feedback. Application is made to an AG(EH) longitudinal control system with fixed pitch and height gains.  The model is driven by a discretized two dimensional Pierson-Moskowitz sea (steady wind of 26 kts) comprised of 13 spectral components. Vehicle responses and control system gains are trended relative to craft speed and heading for fixed sea state.  Implications regarding control system structure are reviewed.  (Author)]]></description>
      <pubDate>Wed, 14 Nov 1973 00:00:00 GMT</pubDate>
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