EXPERIMENTAL INVESTIGATION OF COUNTER-ROTATING PROPFAN FLUTTER AT CRUISE CONDITIONS

被引：1

作者：

MEHMED, O

KURKOV, AP

机构：

[1] NASA Lewis Research Center, Cleveland, OH

来源：

JOURNAL OF PROPULSION AND POWER | 1994年 / 10卷 / 03期

关键词：

Flutter; (aerodynamics);

D O I：

10.2514/3.23762

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This article presents wind-tunnel experimental flutter results. at transonic relative flows, for a 0.62-m-diam composite propfan model. A blade row that fluttered was tested alone, and with a stable aft counter-rotating blade row. The major objectives of the experiment were to study the effect of the second blade row on the row in flutter, and to investigate the flutter. Results show that the second row had a small stabilizing effect. Two distinct flutter modes were found within the operating regime of the rotor; both apparently single-degree-of-freedom instabilities, associated respectively with the first and second natural blade modes. For both flutter modes, flutter boundary, frequency, nodal diameter. and blade displacement data are given. The blade displacement data, obtained with an optical method, gives an indication of the flutter mode shape at a span near the blade tip.

引用

页码：343 / 347

页数：5

共 15 条

[1]

BALAN C, 1990, GE TM87528 REP

[2]

CRAWLEY EF, 1989, 89GT280 AM SOC MECH

[3]

DELANEY BR, 1986, 861715 SOC AUT ENG

[4] ANALYTICAL FLUTTER INVESTIGATION OF A COMPOSITE PROPFAN MODEL [J].

KAZA, KRV ;

MEHMED, O ;

NARAYANAN, GV ;

MURTHY, DV .

JOURNAL OF AIRCRAFT, 1989, 26 (08) :772-780

[5]

KAZA KRV, 1987, NASA TM88944

[6]

KURKOV A, 1991, 91GT19 AM SOC MECH E

[7]

KURKOV AP, 1988, NASA TP2841

[8]

MEHAJAN AJ, 1992, NASA TM105268

[9]

MEHMED O, 1986, NASA TM88792

[10]

MEHMED O, 1986, NOV ADV TURB PROP WO

← 1 2 →