[Glitsch] - Ballast Tray - Bullettin 4900. By this design manual. Described fully in Glitsch Bulletin No. FIGURE 12 V-I BALLAST TRAY Overall Tray Efficiency vs. 3.31 参考文献 Glitsch,Inc,Ballast Tray Design Manual,Bulletin No.4900,3rd Ed. Nearly all control measures are designed to permit control of the two handles. It should be. With too low a pressure, product may not flow from the system.
Kolb-Archive.digest.vol-dk January 25, 2002 - February 13, 2002 'Kottke, Dwight' wrote: Gary, what did you use for a ski for the rear wheel? -Original Message- From: Gary r. Voigt mailto:johndeereantique(at)uswest.net To: kolb-list(at)matronics.com Subject: Re: Kolb-List: Winter Flying Dwight, i think you got the same plans as i have from my flying partner Ralphthere are a few things that i can tell you and i'am sure others will contribute more. make sure your ski tips are about 5-7 degrees higher than the rear when the plane is suspended on jack stands or whatever. This would be like putting a 5' or 6' object under the front of the ski for the proper pitch for me-and of course the length of the ski makes a big difference. I myself did not find any problems from wheels to skiis, in just taking-off it tracked easier and in landing in was very smooth assuming you have a good base 5'-6'.
Be careful because too much snow and you seem to want to nose over easier. Watch for those 4-wheeler tracks cross ways because they can make some pretty big ruts-do a low pass first to make sure you have a good landing site. also we use a teflon spray on the bottom of our skies as it will give us a low coefficient of friction. Apply it before you put your skiis on it is alot easier and it will last 25-35 landings depending on the condition of the snow (wetsloppysticky) etc. Have fun, there are alot of little lakes and fields to be explored. thanksGary r.
Voigt kxp model 'Kottke, Dwight' wrote: I have used plans that I obtained from this list to make skis for my Firestar and I am about ready to try them as soon as the conditions permit. Here is my question for all of you hardy winter flyers. What are the do's and don'ts of flying with skis? Date: Jan 25, 2002 Subject: Re: Winter Flying From: ul15rhb(at)juno.com Gary, what did you use for a ski for the rear wheel? Dwight, You don't need one.
The Firestar tail is light enough that it drags in the snow just fine. I did add a triangular block of solid oak (1/2 pound) routed out with slots that clamp to the tailwheel rod (see pics). This offsets the added weight up front with all the winter clothes and protects the tailwheel on takeoff and landing from the ice (two functions in one). I can email you a copy of my ski plans if you like. Ralph From: 'Bill Weber' Subject: Re: swr meters Date: Jan 25, 2002 I found an SWR meter on ebay sometime ago for about $50. It has several ranges, including the aviation frequencies Bill - Original Message - From: b young Subject: Kolb-List: Re: swr meters Will a CB SWR meter work on VHF antennas? My only source to borrow one would be the local local radio shack.
Im sure they dont have anything even remotely related to aviation radios. They would probably have a CB SWR kicking around. Date: Jan 25, 2002 From: jerryb Subject: Re: Respirators Be careful you don't over pressurize your lungs. Hate to see you have a blow out. On a forced air system there should be some exit holes to relieve pressure. As long as you have a positive airflow, the slight pressure will keep the fumes out. The other thing is filters - don't use conventional furnace filters - they are oiled and so will be your lungs if you breath air filtered through them.
How did you get rid of the dust in an old vacuum cleaner? I hate to even think of it. By the way Shop vac's put out to much air flow and pressure if restricted by a mask. Jerryb Hi gangI made a jury rigged fresh air unit out of my wifes old vacuum cleaner by using it backwards to blow air into a garden hose that screws into a modified firemans fullface mask I bought at an auction. Just place the vacuum outside and run the hose inside.there is enough pressure to allow air to push out around the face seal.
I feed the garden hose under my belt and can move around with some restriction bacause of the stiffness of the hose. I haven't tried a compressor hose but it may work even though the volume would not be a available through the smaller hose.With a vacuum cleaner there is no risk of oil contamination from compressor oil. Works for me.Improvise and overcome.Semper FI.Ed from Western NY Date: Jan 25, 2002 From: bob n Subject: Fantastic view from space Pardon me, this takes maybe a coupla minutes to load-it'll dang near blow yer mind.
Almost as good as NPRM-guessing. Bn the old one Date: Jan 25, 2002 Subject: Re: swr meters From: Richard Carlisle The olny onE I could find that would work on our frequency range was over $200 at Radio Shack. There has to be a cheaper one out there. I asked the guys at RS if they had one I could borrow. Ross From: 'Bill Weber' Reply-To: kolb-list(at)matronics.com Date: Fri, 25 Jan 2002 17:54:38 -0800 To: Subject: Re: Kolb-List: Re: swr meters I found an SWR meter on ebay sometime ago for about $50. It has several ranges, including the aviation frequencies Bill - Original Message - From: b young To: Subject: Kolb-List: Re: swr meters Will a CB SWR meter work on VHF antennas?
My only source to borrow one would be the local local radio shack. Im sure they dont have anything even remotely related to aviation radios. They would probably have a CB SWR kicking around.
From: 'William Herren' Subject: Re: swr meters Date: Jan 26, 2002 Original Message - Will a CB SWR meter work on VHF antennas? My only source to borrow one. Even down here in the sticks of Lousyana I frequently see a HAM radio operator licence plate. Most hams will have access to a meter for SWR. Disaster relief agencies probably have a list of local hams. Most of the hams I have known would be happy to see your project and help.
Bill in Lousyana MSN Photos is the easiest way to share and print your photos: Date: Jan 25, 2002 From: Robert Laird Subject: Re: swr meters At 10:18 PM 1/25/2002, you wrote: The olny onE I could find that would work on our frequency range was over $200 at Radio Shack. There has to be a cheaper one out there. I asked the guys at RS if they had one I could borrow.
Today, I just bought one off of eBay for $21.
What is claimed: 1. FIELD OF THE INVENTION The invention relates to the design and construction of vapor-liquid contacting apparatus. The invention therefore relates to apparatus used within gas scrubbing columns or fractional distillation columns to, for example, perform separations of volatile chemical compounds. The invention specifically relates to apparatus used as fractional distillation or contacting trays.
PRIOR ART Vapor-liquid contacting trays are used in gas scrubbing or treating columns to remove a specific contaminant such as hydrogen sulfide. One specific type of vapor-liquid contacting tray is the fractional distillation tray. These trays are widely employed in the hydrocarbon processing, chemical, and petrochemical industries. Accordingly, a large amount of research, development, and creative thinking has been devoted to providing improved vapor-liquid contacting trays and especially fractionation trays. Entire texts are devoted to the subject. Fractionation tray development has therefore provided many variations in contacting area structure, downcomer design, and overall tray structure.
3,410,540 issued to W. Bruckert is believed pertinent for its showing of the structure of a prior art 'multiple downcomer' tray employing the highly distinctive downcomer design similar to that employed in the subject tray. This reference illustrates alternative downcomer designs and possible variations for sealing the downcomer outlet.
5 shows serpentine bracing means located within the downcomers (column 14, line 17). The use of 'anti-jump' baffles located above the inlet to downcomer is known in the art as illustrated by FIG. 10 in the ballast tray design manual issued by Glitsch Incorporated (Bulletin No. 4900-fourth edition, copyright 1974). 4,028,191 issued to N. Scott is believed pertinent for its showing of a fractionation tray design in which vertical baffles descend from the lower surface of an upper fractionation tray. The baffles are employed on a cross-flow tray and oriented perpendicular to liquid flow across the tray.
The baffles do not extend downward to the upper surface of the next lower tray. Most trays have circular perforations evenly distributed across the contacting surface (decking) of the tray. These allow the rising vapor to flow straight upward from the tray's surface. A smaller subset of fractional distillation trays utilize mechanical means such as small 'slot' in the tray surface for directing the vapor in a specified direction as it passes upward through the contacting area of the tray. 3,282,576 to W. Bruckert et al.
Is believed pertinent for its showing of a cross flow tray having a receiving pan and a bubble promoting device. The reference also teaches that slots may be placed across the surface of a sieve-type liquid gas contacting tray to promote the flow of liquid across the tray without the aid of liquid gradients. 3,417,975 to B. Williams et al.
Is believed pertinent for its teaching of other variations in fractionation tray design such as variations in the tray or deck active area surface material. In this reference, the deck portion of the tray comprises both circular perforations and also flow directing slots. 1-5 of this reference illustrate tray deck materials and perforation types which may be employed in the subject invention. 4,499,035 issued to R. Kirkpatrick et al. Is believed pertinent for its showing of the provision of froth initiation or bubble-promoting means at the liquid entrance to the tray deck area from the inlet downcomer. This reference appears to employ conventional downcomers and seal pans and provides a description of alternative designs for these tray elements.
BRIEF SUMMARY OF THE INVENTION The invention is an improved multiple downcomer contacting tray, as opposed to the more widely used cross-flow tray, which provides highly stable performance during disturbances in fluid flow such as would be caused by lateral movement. In the invention three types of fluid baffles are located within the downcomers or upon the upper surface of the tray. Bubble-promoting devices are spread across the tray and located on the periphery of the tray. Two different types of bubble-promoters are preferably used.