Coaxial Compound Helicopter for Confined Urban Operations

Abstract

A rotorcraft was designed for military operations in a confined urban environment. The specifications included major increases in useful load, range, and speed relative current aircraft capabilities, with a size constraint based on the dimensions of urban streets and intersections. Analysis showed that this combination of requirements is best satisfied by a coaxial main-rotor configuration, with lift compounding to off-load the rotors at high speed, and ducted fans under the rotor disk for propulsion. The baseline design is described, and the aircraft performance is summarized for utility, attack, MEDEVAC, and cargo delivery missions. The impact on size and performance is examined for a number of excursions, including lift-offset main rotors. Technology development required to achieve this advance in capability is recommended.

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Document Details

Document Type
Technical Report
Publication Date
Jan 22, 2016
Accession Number
AD1014817

Entities

People

  • Andrew T. Gallaher
  • Ernest B. Keen
  • Gerardo F. Nunez
  • Joshua F. Elmore
  • Wayne Johnson

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircraft Equipment
  • Aircrafts
  • Airfoils
  • Airframes
  • Control Systems
  • Fuel Tanks
  • Fuselages
  • Medical Evacuation
  • Military Operations
  • Rotary Wing Aircraft
  • Sea Level
  • Tilt Rotor Aircraft
  • Transport Aircraft
  • Turbines
  • Unmanned Aerial Systems
  • Unmanned Systems

Fields of Study

  • Engineering
  • Physics

Readers

  • Aerospace Engineering
  • Maritime Combat Support and Expeditionary Logistics.
  • Urban Planning and Geography.