Showing posts with label Long EZ. Show all posts
Showing posts with label Long EZ. Show all posts
Monday, January 26, 2015
Oil Flows / Klaus is awesome!
Hey Guys,
I assume everyone has seen it already, but just in case. You need to check out Lynne Wainfan's article on Klaus Savier and the Determinator (December Experimenter). Prepare to have your mind melted.
Anyway in the article Lynne describes Klaus' secret recipe for oil based flow visualization.
"...special dark colored oil is put on the airplane before flight. After landing the oil tracks show where the air was, or was not. Klaus has a finely tuned mixture for his oil: He starts with carbon black, the fine powder that is added to paint to make it black. Carbon black is available on the Internet and in paint shops. To this, he adds motor oil which is viscous - a handy trait that helps it not fall off the airplane. Then Klaus reduces the mixture with diesel fuel or kerosene, but this combination has too much surface tension. To counteract that problem he adds a lot of dish soap...One begins to understand exactly how obsessive engineers are about visuaizing airflow. (I have found that the dishsoap has made the carbon black cleanup a breeze)."
I was really impressed by the combination of Lynne's engaged and researched writing and Klaus' willingness to share. I ended up all pumped up about the topic, luckily with Justin Gillen doing all this Cassutt flying to get up to speed for PRS it seemed an opportunity we were missing. So we ended up getting out the oil again and doing some visualization work. Below are some pictures of what we found. Yes we are intentionally leaving out the most interesting pictures :).
Elliot and Jenn
I assume everyone has seen it already, but just in case. You need to check out Lynne Wainfan's article on Klaus Savier and the Determinator (December Experimenter). Prepare to have your mind melted.
Anyway in the article Lynne describes Klaus' secret recipe for oil based flow visualization.
"...special dark colored oil is put on the airplane before flight. After landing the oil tracks show where the air was, or was not. Klaus has a finely tuned mixture for his oil: He starts with carbon black, the fine powder that is added to paint to make it black. Carbon black is available on the Internet and in paint shops. To this, he adds motor oil which is viscous - a handy trait that helps it not fall off the airplane. Then Klaus reduces the mixture with diesel fuel or kerosene, but this combination has too much surface tension. To counteract that problem he adds a lot of dish soap...One begins to understand exactly how obsessive engineers are about visuaizing airflow. (I have found that the dishsoap has made the carbon black cleanup a breeze)."
I was really impressed by the combination of Lynne's engaged and researched writing and Klaus' willingness to share. I ended up all pumped up about the topic, luckily with Justin Gillen doing all this Cassutt flying to get up to speed for PRS it seemed an opportunity we were missing. So we ended up getting out the oil again and doing some visualization work. Below are some pictures of what we found. Yes we are intentionally leaving out the most interesting pictures :).
Elliot and Jenn
 |
| Tangotimemachine separation at cooling exhaust |
 |
| Tangotimemachine separation at cooling exhaust, opposite side |
 |
| Miss Demeanor cowling above inlet |
 |
| Miss Demeanor belly cooling exhaust |
Friday, August 8, 2014
Over Oshkosh
A big thank you to Tyson Rininger and Bruce Moore for this fantastic photo over Oshkosh last week.
 |
| Front to back, Wasabi, Tango II, Rutan Catbird, Glasair II, Ol Blue Long EZ |
Thursday, July 25, 2013
IOL-200 Cylinder
Hey Guys
Oh the things that you find in Mojave. We were jamming on an EZ that is getting ready to leave for Oshkosh last night and found this IOL-200 cylinder (see below) in a corner of the hanger. To be fair, it was Dick's hangar and the EZ was Old Blue, one of the round the world EZ's. But nonetheless, its cool that the other 4 in existence are in a little museum in the capital.
Makes me feel like a weenie for the silly mods we do to our O-200s in the formula class.
What are you working on tonight?
-Race 68
Oh the things that you find in Mojave. We were jamming on an EZ that is getting ready to leave for Oshkosh last night and found this IOL-200 cylinder (see below) in a corner of the hanger. To be fair, it was Dick's hangar and the EZ was Old Blue, one of the round the world EZ's. But nonetheless, its cool that the other 4 in existence are in a little museum in the capital.
Makes me feel like a weenie for the silly mods we do to our O-200s in the formula class.
What are you working on tonight?
-Race 68
Thursday, July 18, 2013
Long EZ Cooler Exhaust Notes
Hey Guys,
I was in my archives for some other stuff and found this gem. The excerpt focuses on aft facing sugar scoops as installed for oil cooling exhaust on Long EZs. As you know this is a trouble spot on not only Long EZs but most pusher configured aircraft. This is out of the Long EZ build notes. Wasabi was able to verify these findings last year in flight test.
What are you working on tonight?
-Race 68
I was in my archives for some other stuff and found this gem. The excerpt focuses on aft facing sugar scoops as installed for oil cooling exhaust on Long EZs. As you know this is a trouble spot on not only Long EZs but most pusher configured aircraft. This is out of the Long EZ build notes. Wasabi was able to verify these findings last year in flight test.
What are you working on tonight?
-Race 68
Wednesday, September 19, 2012
Recent Long EZ test work
A couple pictures associated with some contract flight test Wasabi did here at Mojave. The point of interest is an aft facing sugar scoop for a 235 Long EZ oil cooler. The main interest for Wasabi in the test was the opportunity to try some new test equipment, specifically a new camera and of course share some of the data with you!
A stilll from the video, before engine start.
After the flight the tufts were pretty abused (camera performed flawlessly).
More unhappy tufts.
Subscribe to:
Posts (Atom)
