Accession Number : AD0018276


Title :   STUDY OF AUTOMATIC CONTROL SYSTEMS FOR HELICOPTERS. PART 2. REAC STUDY OF RPM CONTROL FOR THE SINGLE-SPOOL TURBOPROP ENGINES


Corporate Author : HONEYWELL INC HOPKINS MN


Personal Author(s) : Brown, C A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/018276.pdf


Report Date : 31 Jul 1953


Pagination or Media Count : 56


Abstract : The simulated single-rotor helicopter powered by a Continental Artouste I turboprop engine was restricted to vertical motion. The results of the REAC runs indicated that the outstanding differences between manual and a typical automatic rpm control are higher rpm deviation after a step gust input and a more rapid response of the helicopter following stick movements in manual control. From the standpoint of minimum complexity, the use of a control involving only proportional and integral feedbacks appeared most advisable, but to gain maximum tightness of control, rate should be added. The responsiveness of the helicopter varied only slightly from 1 optimum control to another, although it definitely degenerated when a considerable degree of temperature control was added. All of the rpm control configurations studied, except proportional alone or integral alone, exhibited worthwhile performance characteristics.


Descriptors :   *FLIGHT CONTROL SYSTEMS , *HELICOPTERS , LIMITATIONS , TEMPERATURE CONTROL , FEEDBACK , CONFIGURATIONS , GAIN , GUSTS , ENGINES , TURBOPROP ENGINES , QUICK REACTION , RESPONSE


Subject Categories : Helicopters
      Military Aircraft Operations


Distribution Statement : APPROVED FOR PUBLIC RELEASE