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LIFT FAN PROPULSION SYSTEMS V/STOL AIRCRAFT CONTROL
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English
Abstract
This paper discusses aircraft control power requirements provided by lift fan systems. Gas power transfer is described and estimated performance presented. A performance comparison is made between the thrust spoiling system used in the present Army XV-5A flight research vehicle and a gas power transfer system. Gas power can provide adequate aircraft control forces. Thrust spoiling is not needed for fan dynamic response, use of a phase lead network in the control circuit of a gas power transfer system can provide sufficiently rapid fan dynamic response.