FLIGHT-TEST INVESTIGATION OF A MODEL OF AN AERIAL VEHICLE SUPPORTED BY FOUR UNSHROUDED PROPELLERS

Abstract

A dynamic stability and control investigation showed that the uncontrolled hovering motions of the model were unstable oscillations in pitch and roll. However, inasmuch as the periods of the oscillations were relatively long, the model could be controlled fairly easily in hovering without artificial stabilization. The basic model was difficult to control at the higher forward speeds of the investigation but easy to fly when horizontal and vertical tails were added.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1962
Accession Number
AD0274328

Entities

People

  • Robert H. Kirby

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Angular Motion
  • Center Of Gravity
  • Diameters
  • Ducted Fans
  • Flight
  • Government Procurement
  • Guard Rings
  • Horizontal Stabilizers
  • Moment Of Inertia
  • Motion Pictures
  • Propeller Blades
  • Propellers
  • Scale Models
  • Shrouded Propellers
  • Vehicles

Fields of Study

  • Agricultural and Food sciences

Readers

  • Aerodynamics/Aeronautics.
  • Control Systems Engineering.