X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 18 Feb 2013 08:12:30 -0500 Message-ID: X-Original-Return-Path: Received: from nk11p08mm-asmtp001.mac.com ([17.158.58.246] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6069011 for lml@lancaironline.net; Sun, 17 Feb 2013 21:15:44 -0500 Received-SPF: pass receiver=logan.com; client-ip=17.158.58.246; envelope-from=gw5@me.com Received: from [192.168.1.103] (cpe-076-182-075-210.nc.res.rr.com [76.182.75.210]) by nk11p08mm-asmtp001.mac.com (Oracle Communications Messaging Server 7u4-26.01(7.0.4.26.0) 64bit (built Jul 13 2012)) with ESMTPSA id <0MIE00DOV8X8JOB0@nk11p08mm-asmtp001.mac.com> for lml@lancaironline.net; Mon, 18 Feb 2013 02:15:10 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.9.8327,1.0.431,0.0.0000 definitions=2013-02-17_06:2013-02-15,2013-02-17,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1203120001 definitions=main-1302170318 From: George Wehrung Content-type: multipart/alternative; boundary="Apple-Mail=_DDF4DD5B-61D8-4814-BC14-EFF7CF05F164" X-Original-Message-id: MIME-version: 1.0 (Mac OS X Mail 6.2 \(1499\)) Subject: Re: [LML] Re: Full feather prop vs high pitch X-Original-Date: Sun, 17 Feb 2013 21:15:09 -0500 References: X-Original-To: Lancair Mailing List In-reply-to: X-Mailer: Apple Mail (2.1499) --Apple-Mail=_DDF4DD5B-61D8-4814-BC14-EFF7CF05F164 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I am a King Air pilot for the last 7 years. We generally come out of = beta around 60 knots during the landing rollout. This is because of = blade erosion and the potential of debris being sucked back into the = engine. This is really apparent when landing on dirt strips and seeing = the dirt cloud move from behind the engine towards the front of the = blades as the aircraft slows. I know it seems weird from behind the = engines to the front, but it happens. =20 Also we King Air guys taxi with the props at low pitch at just in and = out of beta vs using the brakes. It's a trade off between heating up = the brakes or using beta on long taxis at the larger airports. And we = run the ice vanes extended to limit as much of the debris getting sucked = into the intake as possible. Another advantage to using reverse is backing. Not a normally = recommended procedure nor authorized by all operators, but you can do = it; just don't hit the brakes to stop your movement in reverse or you = will sit on the tail. Instead, ease of out of reverse until you feel = the plane start to surge forward, then you can come onto the brakes. On Feb 17, 2013, at 4:14 PM, Todd Long wrote: > Blows the runway debris in front of the plane which it then runs into. = Check out a king air prop sometime where the pilot uses beta a lot.=20 >=20 > Typing and grammar errors courtesy of Siri and the iPhone. >=20 > On Feb 17, 2013, at 13:16, "Dennis Johnson" = wrote: >=20 >> "I do not intend to full blast reverse (unless there is an = emergency), so keeping prop and skin damages under control." >> =20 >> Hi Ronald, >> =20 >> Just curious, how would full reverse damage the prop or skin? >> =20 >> Dennis >>=20 >> =20 >> =20 --Apple-Mail=_DDF4DD5B-61D8-4814-BC14-EFF7CF05F164 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii toddlong1@gmail.com> = wrote:

Blows the runway debris in front = of the plane which it then runs into. Check out a king air prop sometime = where the pilot uses beta a lot.

Typing and grammar errors = courtesy of Siri and the iPhone.

On Feb 17, 2013, at = 13:16, "Dennis Johnson" <pinetownd@volcano.net> = wrote:

"I do not intend to full blast reverse (unless there is an = emergency), so=20 keeping prop and skin damages under control."

Hi Ronald,

Just curious, how would full reverse damage the prop or skin?

Dennis

= --Apple-Mail=_DDF4DD5B-61D8-4814-BC14-EFF7CF05F164--