| 词条 | Coax-P |
| 释义 |
The Coax-P is a contra-rotating propeller developed by NeuraJet of Senftenbach, Austria and Sun Flightcraft of Innsbruck, Austria for the Rotax 503 and Rotax 582 aircraft engines for use on ultralight aircraft.[1][2] Design and developmentThe Coax-P was designed by Hans Neudorfer of NeuraJet and Herbert Hofbauer of Sun Flightcraft. The propeller increases thrust by 15-20% over single propellers and reduces noise levels, especially low frequency noise, while eliminating torque effects.[1][2][3] The propeller system was designed for ultralight trikes and powered parachutes. The latter are especially sensitive to torque effects and the propeller design addresses that issue.[1][2] The design has two propellers, each with two composite, ground adjustable blades and uses a 3.7:1 gear box type reduction drive. The two propellers are powered by two meshing and counter-rotating shafts, powered by helical gear wheels running in an oil bath.[1][3] The gap between and the pitch of the two propellers must be exactly right. Neudorfer explains, "when the setting is not exactly right, the air stream from the second propeller meets the retrograde air stream from the first propeller at the wrong angle and all this does is to produce more noise and more turbulence. The correct agreement of the setting angle and the hub gaps for the different propeller hub forms can only be established by doing the finest of setting work. Should the propeller be out of place by only two millimeters the effectiveness declines and the noise level increases dramatically."[3] Applications
Specifications (Coax-P)Source: Sunflight[1]
See also
References1. ^1 2 3 4 {{cite web|url=http://sunflightcraft.com/en/coaxp.php|title=Sunflightcraft Coax-P|work=sunflightcraft.com|accessdate=4 November 2015}} 2. ^1 2 Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 70. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X 3. ^1 2 {{cite web|url=http://www.neurajet.at/englisch/coaxial.html|archiveurl=https://web.archive.org/web/20051217110223/http://www.neurajet.at/englisch/coaxial.html|title=Über Neura Jet - Coaxial|archivedate=17 December 2005|work=neurajet.at|accessdate=4 November 2015}} External links
1 : Propellers |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。