NACA-TN-1303

A transonic propeller of triangular plan form

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:11:49Z
date available	2017-09-04T16:11:49Z
date copyright	01/01/1947
date issued	1947
identifier other	BJLUYDAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/75001
description abstract	An isosceles triangle twisted into a screw surface about its axis is proposed as a propeller for transonic flight speeds. The purpose is to attain the drag reduction associated with large sweepback in a structurally practicable configuration. A mathematical theory for such a propeller is presented. Calculations taking account of wave and skin-friction drag indicate a net efficiency of the order of 80 percent at Mach number 1.1. A 12-foot propeller is estimated to be able to absorb 18,500 brake horsepower at 840 miles per hour at sea level.
language	English
title	NACA-TN-1303	num
title	A transonic propeller of triangular plan form	en
type	standard
page	42
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1947
contenttype	fulltext