If the propeller is rotating when it strikes an object, usually the resulting damage can easily be seen on all blades. The propeller consist of two or more blades connected together by a hub. A mechanical failure of the propeller could cause a forced landing or create vibrations sufficiently severe to damage the aircraft, possibly causing it to become uncontrollable. Proper care of your propeller starts with the preflight. An easa part 66147 approved manual on propellers and controls fully qualifying as module 17 up through level 3. Propeller maintenance stallings aircraft propeller llc. The most common forms of physical propeller damage are nicks, dings, and cracks on both the blades and the hub of the propeller. This notice provides revised guidance for federal aviation administration faa certificateholding district offices chdo, principal maintenance inspectors pmi, and principal avionics inspectors pai assigned to operators conducting aircraft operations under title 14 of the code of federal regulations 14 cfr parts 91 subpart k 91k and 5. The book in aircraft propellers and control is one of a series specialized training manuals prepared to aviation training personals. Fascination, wd aircraft, mccauley and hartzell propellers. To ensure youre getting the most from your investment, its critical to conduct regular preventative maintenance of your aircraft propeller in addition to complying with a regular overhaul schedule. During maintenance periods the propeller should be protected from any grit blasting on the hull. This is centrals commitment to you weve been making and keeping it for over 75 years. Propeller driven aircraft maintenance central flying.
Proper aircraft propeller maintenance improves the overall performance, safety and efficiency of a plane. Pdf failure analysis of an aircraft propeller researchgate. Your aircraft propeller represents a significant investment in the performance, safety, and efficiency of your aircraft. Ac 2037c, titled aircraft metal propeller blade failure, dated 7151980, provides information concerning repairs to metal propeller blades. These nicks and scratches act as stress risers, which can weaken the blade enough to eventually cause it to fail. If you need to have either one of these propellers serviced, repaired or maintenanced, feel free to contact us for more information. Ac 2037e aircraft propeller maintenance document information. Fouling the majority of marine growth on the propeller surface is of the animal type, acorn barnacles and tubeworms being the most frequent may cause a much greater effect than roughness.
Propellers are subject to constant vibration stresses from the engine and airstream, which are added to high bending. Tow bars and propellers seem to battle it out routinely, and i have yet to. One of the most recognizable parts of an airplane is the aircraft propeller, and many people are unaware that there are many different types of aircraft propellers. Much of what you need you can get from a local hardware store and an art supply or crafts store. This is the aircraft propeller service company profile. A very in depth manual on modern propellers and propeller control systems covering from fixed pitch wood through state of the art full feathering, reversing, fadec controlled metal and composite systems. Product support may be reached during business hours 8.
The c hercules, a cargo transport aircraft, is the workhorse of naval aviation. In this series, well discuss caring for your propeller, including proper operations, preventive maintenance, performance, and overhauls. The fuselage is the main part of the plane, located centrally. One means of checking the tachometers accuracy is with a commercial. When an engine quits, the airplane can glide to a safe landing. In an overhaul, the professional propeller technician ppt is trained to remove just enough to. The c2 greyhound is a fleet logistics support aircraft. Propeller maintenance propeller damage is caused by striking solid objects. Propeller interference the amount by which the torque and thrust of a propeller are changed by the modification of the air flow in the slip stream produced by bodies placed near the propeller, such as engine, radiator, etc.
Design and performance calculations of a propeller for. The heating elements are mounted internally or externally on the propeller spinner and blades. Easa propellers and propeller systems aviation maintenance. Propeller requirements design is an iterative process. You will find when propeller driven aircraft repairs are necessary, our experienced mechanics are uncompromising in their commitment to have you back in the air as quickly as possible. The hub serves to attach the blades to the engine shaft.
The controllable pitch propeller is designed to provide the pilot the ability to set the blades at any angle within the propeller s range while in flight, giving the pilot more control over the propeller than the two position design. Aps takes great pride in our history and the effort it took to position. Easa module 17a propellers book, ebook, charles l rodriquez. When the engine rotates the propeller blades, the blades produce lift.
The repairs identified in this ac may also be used as a basis for faa approval for major repairs. However, if it fails, you may have a lot of work to do. If the propeller is not rotating at the time it strikes a solid object, the damage is usually confined to just one blade and may be diffcult to see. Whirl wind propellers ground adjustable ga aircraft. Aircraft propellers and controls by fank delp free ebook download as pdf file. The vibration resulting from a propeller blade failure can easily tear the engine from its mounts, rendering the aircraft uncontrollable. For operators of noncertified or experimental aircraft an even greater level of vigilance is required in the maintenance and inspection of the.
A process for the design and manufacture of propellers for. Hamilton standard hydromatic propeller maintenance manual dc7 n. Composite propeller blade field maintenance and minor. When a propeller manufacturers data specifies that major repairs are permitted to a specific model blade or other propeller component, only an appropriately rated repair facility may accomplish those repairs. Composite propeller blade field maintenance and minor repair manual 170 page 5 introduction 6170 oct 2 information published in service bulletins, service letters, service advisories, and service instructions may supersede information published in this manual. A propeller shop has the tools to do much more detailed inspections of propellers for cracks, including ultrasonic, eddy current, dye penetrant, and magnetic particle inspections. There are differences in the turboprop aircraft mentioned above, but the basic operation, assemblies, and maintenance are similar. Your guide to aircraft propeller preventative maintenance. Page 3 propeller hub the metal fitting inserted or incorporated in or with a propeller for the purpose of mounting it on the propeller or engine shaft.
A very in depth manual on modern propellers and propeller control systems covering from fixed pitch wood through state of the art full feathering. An faacertificated mechanic with at least a powerplant rating can accomplish all other propeller maintenance and minor repair by using the practices and techniques specified. Js312651b library of congress cataloginginpublication number. We work closely with part 7 operators, maintaining their fleets propellers, in an effort to minimize downtime. Our over 40 years of experience as a provider of propeller aircraft services is the basis for our comprehensive portfolio, which includes maintenance, repair and overhaul mro airframe and components, system upgrades, modifications and integrations as well as painting services. There are also subparts of those major parts that are crucial to enabling a plane to fly as well as various systems that keep the plane running safely and the passengers comfortable. The purpose of the propeller is to move the aircraft through the air. Propeller owners manual aircraft and airplane propeller. Determine if there is a balancing procedure published by the airframe, engine or propeller manufacturer. Failure analysis of an aircraft propeller article pdf available in engineering failure analysis 148.
It further recommends minimum requirements for propeller field maintenance and provides a checklist for propeller annual inspection. This ac has been updated to provide more current guidance for inspection, maintenance, and field repair of aircraft propellers. Propeller maintenance worldwide aircraft services inc. Each type requires different repairs and maintenance, and companies that specialize in aircraft engine overhaul must be aware of the requirements for each type of propeller. The propeller is the largest propeller will have the best performance. Propeller safety aircraft owners and pilots association. All content is posted anonymously by employees working at aircraft propeller service.
Use restraint in removing nicks we frequently see airplane propellers that have been filed below minimums in the field. The use of additive manufacturing 3d printing in making. The design method was shown to be capable of producing a propeller design that could provide sufficient thrust. In annex 6, operation of aircraft, definitions, the icao defines a general aviation. For the highest level of flight safety, maintenance rules, such as limits and intervals should be applied carefully. Nov 19, 2019 the basic parts of an airplane include the fuselage, wings, empennage, powerplant, and landing gear. The e2 hawkeye is the fleets airborne early warning aircraft. When a propeller blade is lost, the resulting imbalance can tear the entire engine from the aircraft. While were on the subject of tow bars, make a habit of never leaving a tow bar attached to an airplane when its not being used. In addition, propeller auxiliary systems such as ice elimination and simultaneous control systems are investigated, and basic propeller theory is defined. It begins with a carefully chosen set of requirements that are based on the best results of any conceptual or experimental studies done. Composite propeller blade field maintenance and minor repair. The propeller requirements in table 1 have been derived from the nearterm erast mission requirements shown in table 2 and the expected propulsion. If installing an mt propeller, torque propeller stop nuts 6 in accordance with section 4.
Worldwide aircraft offers propeller maintenance specifically for the ge dowty rotol and hamilton sundstrand propellers. The effect of a foul release coating on propeller performa. This ac cancels ac 2037d, aircraft propeller maintenance, dated 81589. Design and performance calculations of a propeller for very. Preventive maintenance is particularly important in the case of the propeller blades that are installed on.
The blades are made in the shape of an airfoil like wing of an aircraft. This objective was met by creating a computer program to design a propeller that meets userdefined aircraft performance requirements within the limitations of the motor, material, and manufacturing methods. Maintenance guidelines get the maximum life out of your aircraft propeller by following these propeller tips. One means of checking the tachometers accuracy is with a commercial strobe unit through which the rotating propeller is viewed.
Centennial of flight draft 82002 5 materials and cost estimates the materials you will need to build the propeller test stand and to use the activity with your students are very simple and easy to get. Inspect the propeller blades for damage, nicks etc. Download aircraft propellers manuals page 1 aircraft. Sep 12, 2017 your aircraft propeller represents a significant investment in the performance, safety, and efficiency of your aircraft. Advisory circular aircraft propeller maintenance federal aviation. Mccauley propellers are identified by a model designation and a. An electrical propeller icing control system, as shown in figure 2, consists basically of an electrical energy source, a resistance heating element, system controls, and necessary wiring. Aircraft propeller maintenance tips tronair tronair aircraft. Chapter 8 turboprop engines and propellers there are a variety of turboprop aircraft in the navy inventory. Proper tachometer operation and accuracy should always be checked using the manufacturers procedure, if available during normal maintenance intervals. Alfa romeo aircraft propeller maintenance manual elica ca 595 1941. An easa part 66147 approved manual on propellers and controls compliant as module 17a for b1. Stallings aircraft propeller provides reliable propeller maintenance.
Wind tunnel tests were carried out on a scaled model of the propeller comparing actual performance against theoretical predictions. The stateoftheart infrastructure operated by our highly dedicated specialists make ruag mro switzerland a leading partner of propeller aircraft owners and operators worldwide. It includes information on the architecture and reference for the spin and propeller assembly programming languages. Sensenich composite aircraft propeller model designations. This style of propeller was popular on light aircrafts. The construction, operation, and maintenance of each of these propeller systems is explained and compared. The propeller is a vital component of the aircraft. Aircraft propeller service, llc aps repairs and overhauls major propeller components for aircrafts ranging from general aviation aircrafts to regional aircrafts, with over 800 customers worldwide, aps prides itself on its extensive technical knowledge of propeller components and its friendly approach to our customers. Deicing an electrical propeller icing control system, as shown in figure 2, consists basically of an electrical energy source, a resistance heating element, system controls, and necessary wiring. If the speed is higher, the aerodynamic performance degrades and the propeller loses efficiency.
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