---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 06/21/07: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:00 AM - Re: Canopy wide open (Tyson V. Rininger) 2. 06:30 AM - Re: Canopy wide open - Will depart aircraft (Charlie Lynch) ________________________________ Message 1 _____________________________________ Time: 01:00:10 AM PST US From: "Tyson V. Rininger" Subject: Yak-List: Re: Canopy wide open As a back seat photographer in numerous Nanchangs and Yaks, I might be able to give a little insight about flying with the canopy open. Although I don't know related Vne speeds or the canopy's maximum speed before departure, I can say that if you notice the rear canopy open, close the front canopy immediately. So long as the front canopy is closed, wind buffeting and pressure is quite minimal and unless the canopy has major existing problems, it's unlikely to depart the aircraft. However, I have noticed that as soon as the front canopy is opened to even the first notch (Nanchang), buffeting in the rear begins to occur. With some flights at normal cruise speed, I've had to partially close the rear canopy to reduce the pressure and 'bypass' air coming into the rear until the front canopy has been completely closed. As far as the effects on aircraft speed, I've flown along in just about every formation position with the rear canopy open and the aircraft (and pilots) seem to perform quite well. (This is where I'm a bit out of my jurisdiction since I'm not a pilot...but I have debriefed!) And on that note, I really do have to commend the design of the Yaks n' Changs when it comes to flying with the rear canopy open. Of all the aircraft I've flown in, this design is the most comfortable and the most stable to be a passenger in along with the ease of operating the canopy numerous times during a single flight. Hope that provides some helpful insight from a somewhat versatile passenger point of view. Cheers, Tyson ________________________________ Message 2 _____________________________________ Time: 06:30:30 AM PST US Subject: Yak-List: Re: Canopy wide open - Will depart aircraft From: "Charlie Lynch" Hi, A number of years ago I was flying my CJ with both canopies open with a GIB. We did several loops. Coming out of the bottom of the last one, the rear canopy "departed" the aircraft. Lots of wind, noise and one very surprised passenger. But fortunately no damage. The exit speed is around 260 - 265 KPH. My puke screen had been removed which may have prevented the canopy loss had it been installed. I would not recommend flying with both canopies open at any speed above 250 KPH based on this experience. Best, Charlie ********** This message contains information which may be confidential and privileged. Unless you are the addressee (or authorized to receive for the addressee), you may not use, copy or disclose to anyone the message or any information contained in the message. If you have received the message in error, please advise the sender by reply e-mail and delete the message. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.