Accession Number:

AD0871704

Title:

An Acoustical Flight Evaluation of a Rotating Combustion Engine

Descriptive Note:

Final rept. 1 Feb 1970-1 Jun 1970

Corporate Author:

CURTISS-WRIGHT CORP WOOD-RIDGE NJ

Personal Author(s):

• Corwin, H. R.
• DeHoroch, R. R.

Report Date:

1970-06-01

Pagination or Media Count:

46.0

Abstract:

Forty-six hours of flight were completed wherein the acoustical characteristics of the RC2-60 liquid-cooled Rotating Combustion Engine were evaluated. The Q-Star prototype quiet aircraft was utilized as the test vehicle. It has been demonstrated that the acoustic signature of the Q-Star aircraft with the RC2-60 engine installed comes close to meeting current detectability criteria.

Descriptors:

• *INTERNAL COMBUSTION ENGINE NOISE
• *INTERNAL COMBUSTION ENGINES
• ACOUSTIC INSULATION
• AERIAL PROPELLERS
• AIRCRAFT ENGINE NOISE
• AIRCRAFT ENGINES
• AIRCRAFT NOISE
• AIRSPEED
• DETECTION
• ENGINE MUFFLERS
• FLIGHT TESTING
• LIQUID COOLING
• NOISE ANALYZERS
• PERFORMANCE(ENGINEERING)
• TRAILING EDGES

Subject Categories:

• Aircraft
• Acoustics
• Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE