This type icing occurs with both piston and jet engines, and almost everyone in the aviation community is familiar with carburetor icing. The most common anti icing systems used are thermal pneumatic, thermal electric, and chemical. There are two distinct snow and ice control strategies that have been gaining popularity and show promise in making use of chemical freezingpoint depressants. Inlet air treatment antiicing systems by pneumafil a. Section front matter page i revision 6 date 122910 ground deicingantiicing manual page 3 of 82 revision record revision no. This document has been drafted according to the best knowledge of the author on the standard procedures for deicingantiicing of commercial transport aeroplanes. Antiicing system for a gas turbine general electric. A compressor bleed antiicing system increases inlet temperature without affecting absolute humidity by using a portion of the compressor discharge air for this purpose. An overview of the deicing and antiicing technologies. Evaluation of a fixed antiicing spray technology fast. Up to 35% faster thermal response than typical metallic heater elements.
Antiicing, a proactive snow and ice control strategy that is sometimes practiced as the first line of defense in a winter maintenance operation, came into practice during the 1990s. Customer value antiicing system prevents ice related internal damage to engine blades, reducing turbine downtime and repair times. Provides solid foundation of icing theory and physics without superfluous meteorological concepts. The automated anti icing system is comprised of a small enclosure, storage tanks, a pump and delivery system, environmental sensors, four motorist warning signs with flashing beacons, and a control computer located in the district office. Singaporebound jal dreamliner flight aborted saying that airplains is exposed of antiicing and deicing processes ozugur added, certain parts of plains such as wings, engines, tail and body are. From twoseat singleengine aircraft to jumbo 777s, icing is a silent creeper and one of the industrys hottest concerns. In addition the alternate one step procedure is also an available option. Team 17 intermediate full instructions provided over 8 days 1,854.
Jedi ace aims to provide an innovative concept of an integrated ice protection system. A cessna 172 has no anti icing system, as long as i remember a electrical pitot heater for preventing freezing over the pitot tube and a carb heater for preventing formation of ice in carburetor. With all of the methods that do not operate continuously, there is a strong need for a reliable icing detector to activate the deicing system. Several minutes into the flight, a message came on in the cockpit indicating a glitch with the antiicing system for the left engine, he said. Ultrasonic ice protection systems archive ouverte hal.
Precise icing evaluation of the site should be done during the assessment phase to evaluate the necessity and benefits of installing an antiicing andor a deicing system. Fluid deicing system weeping wing used primarily on small turbojets business jet types deicing fluid glycol is drawn from a storage tank by electrically driven pump and fed through microfilters to a number of porous metal distributor panels panels formed to profile of the wing to which they are fitted as fluid escapes, it breaks the adhesion between the ice and the. The mk mod 4 gmls uses a heat source other than auxiliary steam. The focus is on two main sources of icing, namely atmospheric and sea spray. First, it can utilize a variety of means to transfer the energy used to remove the ice. The system evaluation included an analysis of environmental detection capabilities, delivery system pressures, spray. Each element is a 12inch copper sheath about 6 feet long. Our antiicing deicing application system is designed to slide into medium and heavy duty dump trucks with an inside box width of 83 or less. Antiicing is understood to be the application of chemicals that not only deice but also remain on a surface and continue to delay the reformation of ice for a certain period of time, or prevent adhesion of ice. Evaluation of an automated bridge antiicing system participants joint technical advisory group nhdot denis boisvert steve gray alan hanscom maint.
Manual of practice for an effective antiicing program. Faaapprovedforicingcondition systems must have ice inspection lights that illuminate the wings leading edge. Whats more, energy is controlled across the system, so the leading edge and shed zones can be heated according to individual needs. The spraying period and the volume of the antiicing agent can be individually configured and automatically controlled by the tms spray controller to match appropriate chemical application rates. Icinga 2 is the monitoring server and requires icinga web 2 on top in your icinga stack. As antiicing is most commonly conducted, a small amount of. Nasa has spent many decades solving problems related to ice accumulation on the wings and in the engines of aircraft. Training recommendations and background information for. The proportions may be adjusted according to humidity and temperature, but care must be taken not to add too much gel. Yes, but only into light or moderate icing if dispatcher and pilot agree is is safe, but never severe icing. Antiicing system controls are automated to run only when ice detected. Ward, project manager new york city department of transportation, division of bridges abstract this paper describes the inhouse development phase i of the fixed antiicing spray.
This system is available with tank capacities ranging from 925 gallons up to 3400 gallons, and come standard with a galvanized steel frame and glass filled polypropylene fittings for years of dependable use. Boschung americas microfast system, patented worldwide, allows the antiicing agent to be applied to various types of road surfaces in a fine mist invisible to the driver. In order to evaluate the antiicing system, the dot analyzed weather conditions to identify prior winters that were comparable to the 20002001 season. Ice frequently forms in the air intake of an engine robbing the engine of air to support combustion. Ice protection systems antiicing, deicing, ice monitoring.
Icing system 1230 taney north kansas city, missouri 64116 8165619050 fax. This project aims to prevent the formation of ice or snow by using brine as the antiicing agent. Evaluation of a fixed antiicing spray technology fast system prepared by. Method sift the icing sugar through a fine sieve into a mixing bowl. Wasted energy and money the ruleofthumb is that removing ice or snowpack after it forms deicing takes ten times more energy than preventing the formation antiicing. The severity of this icing depends upon the shape, location, and orientation of the antenna. Stabilizer anti icing systems the wing leading edges, or leading edge slats, and horizontal and vertical stabilizer leading edges of many aircraft make and models have anti icing systems installed to prevent the formation of ice on these components. Date inserted by revision no date inserted by orig. Oversoft royal will result in loss of dimension and. The decision was made to select and pilot test the deck antiicing spray system manufactured by odin. Antiicing prior to forecasted snow events helps to prevent the formation of bonding between snow and ice and pavement which eases snow plowing. Some of these technologies are qualitatively compared and. Key words highways, antiicing, snow and ice control, preventive strategy, bonded snow and ice, application timing, chemical freezing point depressant, deicing 18. The tks ice protection system, manufactured by cav ice protection, is a fluidbased ice protection system used to help aircraft safely exit inflight icing conditions.
Microfast technology airport and highway weather technology. Automatic identification system radio navigation ais. Each enggpine must operate in the icing conditions defined in appendix d 26. Deicing is the process of removing snow, ice or frost from a surface. Reliable ice protection systems ips are flightcritical for aircraft, from fixedwing to rotorcraft and unmanned vehicles uavrpa. This system does not come standard with the lm series packages. Covers all aspects of aircraft icingground, airframe, and induction. Anti icing system how is anti icing system abbreviated. Monroe truck equipment is the leading manufacturer of snow and ice control equipment, service bodies, utility bodies, platform bodies, dump bodies, towing bodies and stake bodies. The monitoring engine is capable of monitoring entire data center and clouds.
Estimation of electrical power required for deicing systems. Across your entire infrastructure, icinga gives you the power to watch any host and application. Icinga monitors availability and performance, gives you simple access to relevant data and raises alerts to keep you in the loop. Antiicing made easy unique variable orifice nozzle quick coupled spray bar self storing leg stands pv antiicer sprayer has a low profile tank features benefits eliminates waste and downtime with instant onoff control allows liquid to be rapidly unloaded when finished or used as a transfer tank allows fast removal and storage of spray system. The antiicing system utilized the hole size and spacing as optimized for the boundary layer control case. Increased efficiencies and power outputs as shown in the graph to the right. Ground deiceanti ice manual 20162017 winter season. Figure 97 is a photograph of clear ice on an antenna mast. Engine 1, and 2 engine cowlings, nose dome bullet, and inlet guide vanes and the wing thermal antiicing system wtai. During cold and humid conditions, icing can occur anywhere within the inlet system. Lightly beat the egg white in a separate bowl using a wooden spoon or spatula. Aircraft ice protection systems skybrary aviation safety.
However, no aircraft has been certified for flight in icing conditions using this system. At the present time, neither system has been approved for installation on existing airplanes through the supplemental type certificate stc approval method. Twelve electrically controlled immersion heating elements are located within the heat exchanger tank of the mk mod 4 gmls. December 1997, a system manufactured by odin systems international, inc. A new system, electromechanical expulsion deicing, does both. Dranasaonera collaboration on icing research part iiprediction of airfoil ice accretion william b. This dries more slowly, allowing extra time for smoothing the icing. A deicing system has two very attractive attributes. Monroe truck equipment designs and engineers custom vehicle. Publication in the faa nprm 1010 of the appendix d 33. Gradually beat in the icing sugar with the wooden spoon until the icing is light and pliable. Aircraft antiicing systems group 4 leslie mehl annie parsons negative effects of ice buildup destroys smooth flow of air over wing, leading to severe decrease in lift and increase in drag forces can change pitching moment as angle of attack is increased to compensate for decreased lift, more accumulation can occur on lower wing surface causes damage to external equipment such as antennae and. As part of system support, the vendor diagnosed and remedied these problems.
Odin was the only system available in the united states that had progressed beyond the experimental stage. In the case of a pure antiicing system without boundary layer control function embodiments 2, 3, and 4, the holes can be optimized for the antiicing case. Ice protection systems are used to protect aircraft components from ice accumulation both in flight and on the ground. The aim is also to realize what heat the aim is also to realize what heat power is needed to avoid ice formation in tw o of their. Fluid systems on airplanes certificated for flight in icing have used two pumps for redundancy.
They provide antiicing capabilities to prevent the formation of ice andor deicing to remove ice buildup from aerosurfaces. Atco noise m a n a g e ments gas turbine inlet antiicing system is a unique solution designed to provide lowcost operation and highquality protection for any gas turbine application. Communication with ground crew assured responsibility for postapplication inspection stated note. Windscreen antiicing system system is electrical ac powered and dc controlled uses either goldfilm or very fine heating elements between the layers of the windscreen and is permanently on whilst the aircraft is airborne put on during taxi two settings normal uses 2 supplyhigh uses 3 only used during severe icing. The system uses a glycolbased fluid to cover the critical surfaces of an aircraft and prevent the risk of. Name everything which is pneumatically hot bleed air antiiced on the b737. The literature reveals that sea spray icing is the main contributor to marine icing. Antiicing article about antiicing by the free dictionary.
1154 517 435 96 1289 587 1068 1114 608 1192 365 1500 1431 126 412 1206 597 785 807 878 1104 1149 213 1518 1243 278 154 73 235 1437 1031 1032 540 694 793 1240