Aircraft Maintenance Engineering

Aircraft Maintenance Engineering
Rotary Wing Aircraft 6.2 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow· dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 History of Rotorcraft Rotorcraft Terms
Rotor Wing Coriolis Effect Gyroscopic Precession Retreating Blade Stall Transverse Flow Dissymmetry of Lift Translational Lift In Ground Effect Out of Ground Effect Vortex Ring State Dynamic Rollover Rigid Rotor Systems Semi-rigid Rotor Systems Fully Articulated Rotor Systems Ground Resonance Flight Controls Track & Balance Autorotation Anti-torque systems Fins Basic Power Plants Stability 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 History of Rotorcraft
Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Early China Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Early China The Helicopter Rotor and the Propeller: China, Forth Century CE. By fourth century CE a common toy in China was the helicopter top, called the 'bamboo dragonfly'. The top was an axis with a cord wound round it, and with blades sticking out from the axis and set at an angle. One pulled the cord, and the top went climbing in the air. Sir George Cayley, the father of modern aeronautics, studied the Chinese helicopter top in The helicopter top in China led to nothing but amusement and pleasure, but fourteen hundred years later it was to be one of the key elements in the birth of modern aeronautics in the West. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Leonardo DaVinci Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Leonardo DaVinci Da Vinci scrawled next to his sketches of this screw-like machine the following description: "If this instrument made with a screw be well made – that is to say, made of linen of which the pores are stopped up with starch and be turned swiftly, the said screw will make its spiral in the air and it will rise high. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft 1930-1940 Germany Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Germany The Fw 61 was the first helicopter design that had really solved the control problems. Hanna Reitsch demonstrated the Fw 61 on February 1938 at the Berlin 's Deutchlandhalle Stadium. This model could reach a 122 km/h speed 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft 1944 Sikorsky VS-300 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft 1944 Sikorsky VS-300 The VS-300 was modified over a two-year period, including removal of the two vertical tail rotors, until 1941 when a new cyclic control system gave it much improved flight behavior. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft 1944 Sikorsky VS-300 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft 1944 Sikorsky VS-300 Sikorsky fitted utility floats (also called pontoons) to the VS-300 and performed a water landing and takeoff on 17 April 1941, making it the first practical amphibious helicopter. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Bell 47 & HT-L4 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Bell 47 & HT-L4 Bell's first helicopter was invented and built by Arthur Young. The Model 30 had a 2-bladed rotor with perpendicularly- mounted stabilizer bar. Without the bar, movement of the rotor mast, mounted directly to the rotors, would cause the plane of rotation of the rotors to change, thus producing instability. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Bell 47 & HT-L4 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Bell 47 & HT-L4 By 1944, the Model 30 was considered ready for public display and was featured in a Buffalo Sunday newspaper. In July of 1944, it made it's public debut before a crowd inside Buffalo Stadium. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Sikorsky H-5 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Sikorsky H-5 The first helicopter to be built in large numbers was a derivative of the Sikorsky R-5, which started out as a tandem two-seater. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Sikorsky H-5 The first of five prototypes flew on 18 August 1943 powered by a 450hp Wasp Junior radial. This was followed by 25 YR-5A pre-production models, two of which were assigned to the Navy under the designation HO2S-1. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Sikorsky H-5 Modified R-5As were later given new, 600hp Wasp Junior engines and re-designated R-5D. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Bell 47J Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Bell 47J Proposed in 1956, the Model 47J was a four-seat utility version of the 47 G. The 47J was powered by a 220hp derrated Lycoming VO-435. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Bell 47J The enclosed cabin had accommodation for the pilot seated centrally in front and three passengers on a cross bench aft. This bench could be removed to allow the installation of two stretchers. The port door could also be removed to permit the use of an internal electrically-powered hoist for rescue missions. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Bell 47J Alternative skid or pontoon landing gear could be fitted and metal rotor blades were optional permitting a loaded weight of 1290kg. Larger capacity fuel tanks (182 liters) could also be installed providing an extended range of 400km. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Hiller H-12 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Hiller H-12 Stanley Hiller Jr. Design. The Hiller UH-12, derived from the Model 360 two-seater of 1948 with a 180hp Franklin engine, occupies an important place in the history of the helicopter industry in the fifties. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Hiller H-12 The UH-12B normally had skid or flotation gear, but a wheeled undercarriage was fitted to a batch ordered by the US Navy (the HTE-2). 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Hiller H-12 In 1955 a new variant, the UH-12C, appeared. It retained the 200hp Franklin engine, but had all-metal rotor blades and a "goldfish bowl" cockpit canopy. The Franklin engine was replaced by the more powerful 320hp Lycoming VO-540, and the transmission changed to increase the service life of the helicopter. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Piaseki CH-21 Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Piaseki CH-21 The H-21 was originally developed by Piasecki as an Arctic rescue helicopter. The H-21 had winterization features permitting operation at temperatures as low as -65 degrees F, and could be routinely maintained in severe cold weather environments. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Early Challenges Rotary Wing Aircraft 6.2
History of Rotorcraft Part I Early China Leonardo DaVinci Germany 1944 Sikorsky VS-300 Bell 47 & HT-L4 Sikorsky H-5 Bell 47J Hiller H-12 Piaseki CH-21 Early Challenges History of Rotorcraft Early Challenges Early control problems were largely solved by Spanish engineer Juan DeCierva. His gyroplane design incorporated the effects of autorotation. As with all aircraft the major challenge is the amount of power available compared the total weight of the aircraft. The following sections illustrate a selection of milestones in the development of rotorcraft. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Pratt & Whitney 985 Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Pratt & Whitney 985 The Pratt & Whitney R-985 Wasp Junior was a radial engine widely used in American aircraft starting in the 1930s at 300 hp. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Pratt & Whitney 985 By the 1940s, the R-985 produced 450 hp and was used in thousands of military and civilian aircraft. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Pratt & Whitney 985 Production of 39,000 engines spanned from 1930 to 1953 and was the power plant for the Sikorsky S-51 helicopter 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Rolls Royce 250 C20 B Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Rolls Royce 250 C20 B Allison adopted a reverse airflow engine configuration for the Model 250. Although air enters the intake/compression system in the conventional fashion 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Rolls Royce 250 C20 B The compressed air leaving the centrifugal compressor diffuser is ducted rearwards around the turbine system, before being turned through 180 degrees at entry to the combustor. The combustion products expand through the two stage HP turbine, which is connected, via the HP shaft, to the compression system. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Rolls Royce 250 C20 B After expanding through the two stage power turbine; the exhaust gases then turn though 90 degrees to exit the engine in a radial direction A stub shaft connects the power turbine to a compact reduction gearbox, located inboard, between the centrifugal compressor and the exhaust/power turbine system. This created a compact, light & powerful engine. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft 1955 Alouette II Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft 1955 Alouette II The Eurocopter design office decided to develop the SE 3130 with a TURBOMECA turbine. The Artouste II developed 450 HP but only 350 were utilized. The maiden flight occurred on 12th March Two month after, 78 flights had been performed. On 6th June, Jean Boulet, on the second prototype, achieved without difficulty the international altitude record with 8,209 meters. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft 1955 Alouette II Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft 1955 Alouette II The production of the Alouette II ended in 1975 with more than 1300 aircraft. In 1966, the SA318 was a more powerful version, powered by Turbomeca Astazou engine. In 1969, a new version, the SA315 LAMA (an Alouette II with the Alouette III Turbomeca Astazou engine and mechanics), was for a long time the most powerful helicopter in the category. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Bell UH-1 & 204 Rotary Wing Aircraft 6.2
History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Bell UH-1 & 204 In 1955, with an interest in a utility helicopter designed around a turboshaft engine, the US Army had the US Air Force develop a new helicopter for its use. The design selected, Bell's Model 204, was to be powered by a new Lycoming T-53 engine of some 850 shaft horsepower and featured a typical Bell two-blade teetering rotor. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

History of Rotorcraft Modern & Historical Utility
Rotary Wing Aircraft 6.2 History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Modern & Historical Utility Bell 205 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Modern & Historical Utility Bell 212 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Modern & Historical Utility MD 500 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 History of Rotorcraft Part II Pratt & Whitney 985 Rolls Royce 250 C20 B 1955 Alouette II Bell UH-1 & 204 Modern & Historical Utility History of Rotorcraft Modern & Historical Utility Astar 350 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Rotorcraft Terms 6.2 Rotary Wing Aircraft

Rotorcraft Terms Rotary Wing Aircraft 6.2 Rotorcraft Terms I Mast
Stabilizer Bar Main Rotor Blade Swash Plate Engine Cowling Main Rotor Transmission Powerplant Tailboom Intermediate Gear Boxes Sky Light Rotorcraft Terms 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotorcraft Terms Mast Rotary Wing Aircraft 6.2
Rotorcraft Terms I Mast Stabilizer Bar Main Rotor Blade Swash Plate Engine Cowling Main Rotor Transmission Powerplant Tailboom Intermediate Gear Boxes Sky Light Rotorcraft Terms Mast The main rotor is attached to the mast and connected to the MR transmission. The mast absorbs tension and torsion loads of the engine & supports the weight of the helicopter in flight. The mast is a critical item and typically has a finite life. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotorcraft Terms Stabilizer Bar Rotary Wing Aircraft 6.2
Rotorcraft Terms I Mast Stabilizer Bar Main Rotor Blade Swash Plate Engine Cowling Main Rotor Transmission Powerplant Tailboom Intermediate Gear Boxes Sky Light Rotorcraft Terms Stabilizer Bar The stabilizer bar is mounted on the mast or on the trunnion. If the helicopter is disturbed by winds in a hover, the bar tends to stay in it’s plane of rotation due to gyroscopic rigidity in space. The stabilizer bar maintains a perpendicular position relative to the mast. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotorcraft Terms Stabilizer Bar Rotary Wing Aircraft 6.2
Rotorcraft Terms I Mast Stabilizer Bar Main Rotor Blade Swash Plate Engine Cowling Main Rotor Transmission Powerplant Tailboom Intermediate Gear Boxes Sky Light Rotorcraft Terms Stabilizer Bar The stabilizer bar is connected to the feathering axis by linkages causing the blades to feather and the rotor to return to it’s original position. There is a slight delay to this input and dampener units are used to regulate this movement. 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotorcraft Terms Rotary Wing Aircraft 6.2 Rotorcraft Terms I Mast
Stabilizer Bar Main Rotor Blade Swash Plate Engine Cowling Main Rotor Transmission Powerplant Tailboom Intermediate Gear Boxes Sky Light Rotorcraft Terms 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotorcraft Terms Rotary Wing Aircraft 6.2 Rotorcraft Terms II
Vertical Fin Horizontal Stabilizer Crosstube Tail Rotor Drive Shaft Engine Mount Skid Tube Fuselage Crew Doors Tail Rotor Tail Skid Rotorcraft Terms 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Rotor Wing 6.2 Rotary Wing Aircraft Explain:
Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotor Wing Rotary Wing Aircraft 6.2 Rotor Wing Pat I Lift Thrust Drag
Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotor Wing Lift Rotary Wing Aircraft 6.2
Rotor Wing Pat I Lift Thrust Drag Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing Lift A force generated by the effect of airflow as is passes around an airfoil. Lift 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect Drag Thrust Weight

Rotor Wing Thrust The force that propels the aircraft forward.
Rotary Wing Aircraft 6.2 Rotor Wing Pat I Lift Thrust Drag Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing Thrust The force that propels the aircraft forward. Lift 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect Drag Thrust Weight

Rotor Wing Drag Rotary Wing Aircraft 6.2
Rotor Wing Pat I Lift Thrust Drag Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing Drag The retarding force caused by air friction resulting from the movement of the aircraft acting in opposition to thrust. Lift 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect Drag Thrust Weight

Rotor Wing Weight Rotary Wing Aircraft 6.2
Rotor Wing Pat I Lift Thrust Drag Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing Weight The force of gravity acting on the aircraft. Lift 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect Drag Thrust Weight

Rotor Wing Rotary Wing Aircraft 6.2 Rotor Wing Pat I Lift Thrust Drag
Weight Span Chord Relative Wind Pitch Angle Angle of Attack Coning Airfoils Center of Pressure Rotor Wing 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotor Wing Rotary Wing Aircraft 6.2 Rotor Wing Pat II
North American Main Rotor European Main Rotor Coaxial Rotors Intermeshing Rotors Tandem Rotors Conventional Rotors Anti-Torque system Vertical of control Directional Control Yaw Control Rotor Wing 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotor Wing Rotary Wing Aircraft 6.2 Rotor Wing Pat III
Translating Tendency Mast Tilt Blade Speed Blade Twist Blade Flapping Coriolis Effect Dissymmetry of Lift Feathering Axis Flapping Axis Lead Lag Axis Rotor Wing 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotor Wing Rotary Wing Aircraft 6.2 Rotor Wing Pat IV Collective
Throttle Cyclic Anti-torque Pedals Rotor Wing 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Corriolis Effect 6.2 Rotary Wing Aircraft

Coriolis Effect Rotary Wing Aircraft 6.2 Coriolis Effect Blade Droop
Tip Path Plane Coning Climbing Blade Out of Phase Condition Coriolis Effect 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Gyroscopic Precession

Gyroscopic Precession
Rotary Wing Aircraft 6.2 Gyroscopic Precession Rotor Disc Gyroscope Principle Swash Plate Pitch Change Horns Gyroscopic Precession 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Retreating Blade Stall

Retreating Blade Stall
Rotary Wing Aircraft 6.2 Retreating Blade Stall Airspeed Angle of Attack Wing Loading Advancing Blade Retreating Blade Stall Stall Area Beat Vibration Pitch Up Attitude Retreating Blade Stall 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Transverse Flow 6.2 Rotary Wing Aircraft

Transverse Flow Rotary Wing Aircraft 6.2 Transverse Flow
Rotor Disc Tilt Relative Wind Angle Forward Disc Efficiency Aircraft Roll Transverse Flow 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Translational Lift 6.2 Rotary Wing Aircraft

Translational Lift Rotary Wing Aircraft 6.2 Translational Lift
Directional Flight Air Inflow Velocity Effective Translational Lift Translational Lift 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 In Ground Effect 6.2 Rotary Wing Aircraft

In Ground Effect Rotary Wing Aircraft 6.2 In Ground Effect Altitude
Terrain Air Flow Air Cushion Lift Airspeed Relative Wind Speed Weight Density Altitude Temperature Humidity In Ground Effect 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Out of Ground Effect 6.2 Rotary Wing Aircraft

Out of Ground Effect Rotary Wing Aircraft 6.2 Out of Ground Effect
Air Flow Terrain Lift Airspeed Relative Wind Speed Weight Density Altitude Temperature Humidity Out of Ground Effect 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Vortex Ring State 6.2 Rotary Wing Aircraft

Vortex Ring State Rotary Wing Aircraft 6.2 Vortex Ring State Downwash
Vortices Descent Angle Descent Speed Loss of Lift Feed Back Loop Recovery Settling With Power Vortex Ring State 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Dynamic Rollover 6.2 Rotary Wing Aircraft

Dynamic Rollover Rotary Wing Aircraft 6.2 Dynamic Rollover
Pivot points Sloped Ground Critical Angle Loss of the Aircraft Dynamic Rollover 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Rigid Rotor Systems 6.2 Rotary Wing Aircraft

Rigid Rotor Systems Rotary Wing Aircraft 6.2 Rigid Rotor Systems
Composite Feathering Axis Flexing Rigid Rotor Systems 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Semi-rigid Rotor Systems

Semi-rigid Rotor Systems
Rotary Wing Aircraft 6.2 Semi-rigid Rotor Systems Seesaw Under Slung Coned Design Semi-rigid Rotor Systems 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Fully Articulated Rotor Systems

Fully Articulated Rotor Systems
Rotary Wing Aircraft 6.2 Fully Articulated Rotor Systems Feather Flap Lead Lag Phase Ground Resonance Fully Articulated Rotor Systems 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Ground Resonance 6.2 Rotary Wing Aircraft

Ground Resonance Rotary Wing Aircraft 6.2 Ground Resonance Vibration
Ground Feedback Olios Tire Pressure Feedback Loop Recovery Ground Resonance 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Flight Controls 6.2 Rotary Wing Aircraft

Flight Controls Rotary Wing Aircraft 6.2 Flight Controls Collective
Cyclic Swash plate Pitch Links Adjusting Pitch Links Pitch Horns Grips Rotor Blades Torque Pedals Tandem Rotor Control Intermeshing Rotor Control Servo Tabs Flight Controls 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Track & Balance 6.2 Rotary Wing Aircraft

Track & Balance Rotary Wing Aircraft 6.2 Track & Balance I Oscillation
Vibration Vertical Vibration Lateral Vibration Frequencies Track Climbing Blade Blade Matching Balance Alignment Track & Balance 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Track & Balance Rotary Wing Aircraft 6.2 Track & Balance II
Static Balance Dynamic Track Blade Tabs Low Speed Tracking High Speed Tracking Recording Stobbing Flight Regimes Track & Balance 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Autorotation 6.2 Rotary Wing Aircraft

Autorotation Rotary Wing Aircraft 6.2 Autorotation Altitude Airspeed
Collective Down Flare Full Collective Free Wheel Unit Blade RPM Tachometer/Rotor Tachometer Autorotative Region Blade Inertia Autorotation RPM Chart RPM Adjustment Autorotation 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Anti-torque systems 6.2 Rotary Wing Aircraft

Anti-torque systems Rotary Wing Aircraft 6.2 Anti-torque systems I
Main Rotor Rotation Torque Tail Rotor Pusher Puller Neutral/ Negative Pitch Positive Pitch High Positive Pitch Teetering Hinge Anti-torque systems 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Anti-torque systems Rotary Wing Aircraft 6.2 Anti-torque systems II
Coanda Strakes Ducted Fan NOTAR LTE Wind Azimuths LTE Recovery Anti-torque systems 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Fins 6.2 Rotary Wing Aircraft Explain:

Fins Rotary Wing Aircraft 6.2 Fins Vertical Fins
Adjustable Horizontal Stabilizer Horizontal Stabilizer Fins 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Basic Power Plants 6.2 Rotary Wing Aircraft

Basic Power Plants Rotary Wing Aircraft 6.2 Basic Power Plants
Drivetrains Reciprocating Engines Engine Clutch Turbo Shaft Engines Fixed Turbine Free Turbine Engine Derating Transmission Main Rotor Drive Shaft Tail Rotor Drive Shaft Rotor Brake Basic Power Plants 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Stability 6.2 Rotary Wing Aircraft Explain:

Stability Rotary Wing Aircraft 6.2 Stability Static Stability
Positive Static Stability Negative Static Stability Dynamic Stability Positive Dynamic Stability Neutral Dynamic Stability Negative Dynamic Stability Causes Of Instability Stabilizer Bar Stability 6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

Rotary Wing Aircraft 6.2 Reference:
6.2 Rotary Wing Aircraft Explain: Theory of flight applicable to rotary wing including: · coriolis effect · retreating blade stall · auto-rotational characteristics · transverse flow · dissymmetry of lift · ground effect

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Aircraft Maintenance Engineering

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