Accession Number:

AD0016563

Title:

PULSE-JET HELICOPTER POWER CONTROL SYSTEM DEVELOPMENT

Descriptive Note:

Corporate Author:

FAIRCHILD ELECTROTECHNICS DIV FAIRCHILD ENGINE AND AIRPLANE CORP COSTA MESA CALIF

Personal Author(s):

Report Date:

1953-03-01

Pagination or Media Count:

26.0

Abstract:

Curves of the aerodynamic performance vs speed for the XH-26 helicopter and the performance of the AJ-7.5 pulsejet engine are presented and are combined into level-flight equilibrium charts for altitudes below 10,000 ft. A schedule of fuel flow vs collective pitch for a 425-fps tip speed was derived from the charts. A power-control system is proposed which consists of an altitude-compensating relief value, a cam relating the fuel flow to the collective pitch, a manual-override bypass valve, fuel shutoff and equalizing valves, and the rotor fuel system. The power-control system appears to be simple and adequate. See also AD-16 733

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE