The Hudson Miracle

BANGALORE: The dramatic emergency landing of an Airbus A320 jetliner into New York’s Hudson River in which 155 escaped from the jaws of death will go down in the annals of history as a great miracle.
Bangalore too has had its share of water landings in the past and though such landings did not involve large passenger aircraft, they were no less than miraculous.
Since 2005, about nine crashes have occurred in the Bangalore airspace, five involving water landings.
In four of the five water landings, the passengers and crew had a miraculous escape. Only in once incident were four members onboard a private four-seater Pilactus 68 aircraft killed after crashing into the Gowdanapalya Lake in September 2007.
The first incident was in April 9, 2005, when a two seater Hansa aircraft crashed into a lake near the HAL airport, just a few minutes before Chinese Premier Wen Jiabao arrived at the airport. The pilots, Air Vice-Marshal (Retd) Ajith Lamba, and an M.Tech. student of the Indian Institute of Science espaced with minor injuries.
Later that year in July, two pilots on a Cessna-340 aircraft which was involved in cloud seeding operations crashed into the Jakkur Lake. Both survived, with injuries.
In 2006, a Deccan Aviation helicopter too met a similar fate when the pilots force-landed on the Jakkur lake bed and escaped unhurt. Probes revealed that the crashes had occurred due to technical snags.
Former President of the Aeronautical Society of India Wg.Cdr A E Patrawala says that the reasons why pilots resort to force or crash land on water bodies is because the chances of survival are more.
“The A320 landing into the lake was a copy book flat landing by the pilots. After landing the aircraft floated and there was sufficient time for rescuers to evacuate the passengers. During training, pilots are taught that in the eventuality of a force-landing they should look for a runway or a flat surface. Else, flat-landing in a water body is preferable,” he said.

Ochroma pyramidale/ Balsa

Balsa (Ochroma pyramidale, synonym O. lagopus) is a large, fast-growing tree that can grow up to 30m (100ft) tall, native to tropical South America north to southern Mexico. It is evergreen, or dry-season deciduous if the dry season is long, with large (30–50 cm, 12-20 in) weakly palmately lobed leaves. The name balsa derives from Spanish for a raft. Despite being very soft, balsa is classified as a hardwood, and is the softest commercial hardwood.
The timber is very soft and light with a coarse open grain. The density of dry balsa wood ranges from 100–200 kg/m³ (6.24-12.49 lb/ft³), with a typical density of about 140 kg/m³ (8.74 lb/ft³) (about one third the density of other hard woods). It is also a very popular material to use when making wooden crankbaits for fishing, as it is low density but high in strength. Balsa wood is used to make very light, stiff structures in model bridge tests and for the construction of light wooden aeroplanes, most famously the World War II de Havilland Mosquito. It is also used in the floorpan of the Chevrolet Corvette Z06 sandwiched between two sheets of carbon fibre. In table tennis bats, a balsa layer is typically sandwiched between two pieces of thin plywood. Balsa wood is also used in laminates with glass-reinforced plastic (fiberglass) for making high-quality balsa surfboards and the decks and topsides of many types of boats, especially pleasure craft under 30m (100 ft) in length.
Balsa wood is often used as a core material in composites, and as a result many wind turbines are made partially of balsa. It also remains a popular material for model aircraft, offering an excellent balance of strength and lightness.

Continuation: Magic Of R/C

An Ofna Hyper 8 Pro 1:8-scale nitro-powered racing buggy.

A completely R/C MonsterTruck. It has a 4 wheel Drive.

Radio-controlled car

A radio-controlled car (R/C car) is a powered model car driven from a distance via a radio control system. Inputs from joysticks (or a wheel and a trigger) on a transmitter are sent to the car's onboard receiver. The receiver interprets the radio signals and sends electrical pulses to the servo and electronic speed controller, making the model turn its wheels and the run the motor. Radio-controlled cars can range from simple "stop and go" toys to competitive racing models, which feature all the complexity and adjustability of their full-size counterparts. Building, driving, and modifying radio-controlled car kits is a popular hobby.

-Soham

Some Popular AeroModells

This Carl Goldberg Products model of a Yakovlev Yak-54 is an example of a high-performance, fully aerobatic mid-wing plane with no dihedral

This .60 cubic inch/10cc glow-powered Vinh Quang Model Mudry CAP 10 is a fully aerobatic, low-wing, "sport scale" model plane with slight dihedral

This homebuilt high-wing model is an example of the concept of Simple Plastic Airplane Design where readily available and easily workable materials are used to create a simple, rugged airframe

ParkZone P-51D Mustang
The Shinden Aircraft

This radio control airplane is carrying a scale model of X-33 and is taking part in NASA research.

F3A Pattern Ship - ZNline Alliance by CPLR

R/C Air Planes

A radio-controlled aircraft (often called RC aircraft or RC plane) is a model aircraft that is controlled remotely, typically with a hand-held transmitter and a receiver within the craft. The receiver controls the corresponding servos that move the control surfaces based on the position of joysticks on the transmitter, which in turn move the plane.
Flying RC aircraft as a hobby has been growing worldwide with the advent of more efficient motors (both electric and miniature internal combustion or jet engines), lighter and more powerful batteries and less expensive radio systems. A wide variety of models and styles is available.
Scientific, government and military organizations are also utilizing RC aircraft for experiments, gathering weather readings, aerodynamic modeling and testing, and even using them as drones or spy planes.

There are many types of radio-controlled aircraft. For beginning hobbyists, there are park flyers and trainers. For more advanced pilots there are glow plug engine, electric powered and sailplane aircraft. For expert flyers, jets, pylon racers, helicopters, autogyros, 3D aircraft, and other high end competition aircraft provide adequate challenge. You can also build scale models of manned aircraft. Some models are made to look and operate like a bird instead. Other sport aircraft are designated for scale-like flying referred to as "scale". Scale is a very demanding but rewarding aspect of the hobby.

[edit] Sailplanes and gliders

F3A Pattern Ship - ZNline Alliance by CPLR

Shinden by Bryan Hebert
Main article: radio-controlled glider
Gliders are planes that do not typically have any type of propulsion, as a general rule. Because most gliders are unpowered, flight must be sustained through exploitation of the natural lift produced from thermals or wind hitting a slope. Dynamic soaring is another popular way of providing propulsion to gliders and is commonly employed today.

[edit] Jets
Jets tend to be very expensive and commonly use a micro turbine or ducted fan to power them. Airframes are constructed from fiber glass and carbon fiber. Inside the aircraft, wooden spars reinforce the body to make a rigid airframe . They also have kevlar fuel tanks for the Jet A fuel that they run on. The micro turbines start with kerosene, then burn for a few seconds before introducing the jet fuel by solenoid. These aircraft can often reach speeds in excess of 200 mph. They require incredibly quick reflexes and very expensive equipment, so are usually reserved for the expert. The FAA heavily regulates flying of such aircraft to only approved AMA (Aeronautical Modelers Association) sites, in where certified turbine pilots may fly. Some military bases allow such high tech aircraft to fly within limited airspace such as Kaneohe Marine base in Hawaii, and Whidbey Island NAS in Washington State. An average turbine aircraft will cost between $5000-$20,000. Many manufactures sell airframes such as Yellow Aircraft and Skymaster. Turbines are produced from The Netherlands (AMT)to Mexico (Artes Jets). The average microturbine will cost between $2500 and $5000 depending on engine output. Smaller turbines put out about 12 lbf (53 N) of thrust, while larger microturbines can put out as much as 45 lbf (200 N) of thrust. Radio control jets require an on board FADEC (Full Authority Digital Engine Control) controller, this controls the turbine, just like a larger turbine. RC Jets also require electrical power. Most have a LIPO (Lithium Ion Polymer pack) at 8-12 volts that control the FADEC. There is also a LIPO for the onboard servos that control ailerons, rudder, flaps and landing gear. The Federal Government has recently prohibited such use of RC Jets in urban areas (2006).

[edit] Pylon racers
Racers are small propeller aircraft that race around a 2, 3, or 4 pylon track. They tend to be hard to see and can often go over 240 km/h (150 mph), though some people do pylon races with much slower aircraft. Although several different types of aircraft are raced across the world, those flown primarily in the US are; Q500 (424 or ARPRA, and 428), and Q40. 424 is designed as a starting point into the world of pylon racing. Inexpensive (under $200 for the airframe) kits with wing areas of 3,200 square centimetres (500 sq in) are flown with .40 size engines that can be purchased for less than $100. The goal is for the planes to be not only inexpensive, but closely matched in performance. This places the emphasis on good piloting. APRA is a version of 424 with specific rules designed for consistency. 428 aircraft are similar to 424 in appearance. The difference is in engine performance and construction. The planes are primarily made of fiberglass with composites used at high load points. Wings are often hollow to save weight. (All aircraft must meet a minimum weight. A lighter wing moves more of the weight closer to the center of gravity. This requires less control deflection and its resulting drag to change the planes attitude.) They also use .40 size engines but unlike 424 they are much more expensive. They have been designed to put out the maximum amount of power at a specific RPM using a specific fuel. Nelson manufactures the most predominantly used engine. Speeds are very fast in this class with planes capable of reaching 290 km/h (180 mph). Q40 is the highpoint of pylon racing, as their aircraft resemble full size race planes. They are not limited to the simple shapes that Q500 planes are, with have much cleaner aerodynamics and less wing area. They use the same basic Nelson engine used in 428, but the engine is tuned to turn a much smaller prop at a much higher rpm. The planes accelerate much more slowly than 428, but their clean airframes allow them to reach higher speeds, and maintain them around the turns. These planes can fly in excess of 320 km/h (200 mph) on the course. Because of their limited wing area however, Q50 planes must fly a larger arc around the pylons to conserve energy. Although faster, they ultimately fly a larger course. Ironically the best times for a 10 lap 3 pylon Q40 race are very close to the same in 428.

The Magic Of R/C (Radio Control)

Radio control (often abbreviated to R/C or simply RC) is the use of radio signals to remotely control a device. The term is used frequently to refer to the control of model vehicles from ahand-held radio transmitter. Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well.

The first general use of radio control systems in models started in the early 1950s with single-channel self-built equipment; commercial equipment came later. The advent of transistors greatly reduced the battery requirements, since the current requirements at low voltage were greatly reduced and the high voltage battery was eliminated. In both tube and early transistor sets the model's control surfaces were usually operated by an electromagnetic escapement controlling the stored energy in a rubber-band loop, allowing simple rudder control (right, left, and neutral) and sometimes other functions such as motor speed.^[1]

Crystal-controlled superheterodyne receivers with better selectivity and stability made control equipment more capable and at lower cost. Multi-channel developments were of particular use to aircraft, which really needed a minimum of three control dimensions, (yaw, pitch and motor speed) as opposed to boats, which can get away with two or one.

As the electronics revolution took off, single-signal channel circuit design became redundant, and instead radios provided coded signal streams which a servomechanism could interpret.

More recently, high-end hobby systems using Pulse-Code Modulation (PCM) features have come on the market that provide a computerizeddigital bit-stream signal to the receiving device, instead of analog type pulse modulation.

In the early 21st century, 2.4 gigahertz tramsissions have become increasingly utilised in high-end control of model vehicles and aircraft.

Remote control military applications are typically not radio control in the direct sense, directly operating flight control surfaces and propulsion power settings, but instead take the form of instructions sent to a completely autonomous, computerized automatic pilot. Instead of a "turn left" signal that is applied until the aircraft is flying in the right direction, the system sends a single instruction that says "fly to this point".

Some of the most outstanding examples of remote radio control of a vehicle are the Mars Exploration Rovers such as Sojourner.

Membership Details for the Club 2008

On your request we will mail you the form of the JAMSHEDPUR AEROMODELLING CLUB

The Membership fees is as follows:

1.                  Registration fees (please tick appropriately)

a.       Rs 2000 (for institutional membership)

b.      Rs 1000 (for individual adult membership)

c.       Rs 500 (for individual student membership)

 

No registration fees required for individual student members.

 

2.                  Membership Fees (please tick appropriately)

a.       Rs 3000 (for institutional membership)

b.      Rs 1500 (for individual adult membership)

c.       Rs 500 (for individual student)

d.      Rs 300 (for institutional student)

toys ????----reply to Ankit,New Delhi's comments

Guys wat v fly are not toys by any chance.....these are real airplanes...........its just that its small in size n have no seating capacity ........our club also has aeromodels which have a wing span of 90 feet..n they can fly upto height's more then 600 ft ..............so pls dont make the mistake of calling  them toys...........the planes which we fly are just small modells of enormous planes.....almost the same mechanism....the same shapes etc...

Construction

The construction of flying models is very different from most static models. Flying models borrow construction techniques from (usually vintage) full-sized aircraft (although models rarely use metal structures.) These might consist of forming the frame of the model using thin strips of light wood such as balsa, then covering it with fabric and subsequently doping the fabric to form a light and sturdy frame which is also airtight. For very light models, very thin paper can be substituted for fabric. Heat-curing plastic films ("heat shrink covering" or "solarfilm") can be ironed on — a hand-held iron causes the film to shrink and adhere to the frame. A heat gun can also be used.
Other model construction techniques consist of using formers and longerons for the fuselage, and spars and ribs for the wings and tail surfaces. More robust designs may use solid sheets of wood to form these instead, or might employ a composite wing consisting of an expanded polystyrene core laminated with a surface veneer of wood, often obechi, which protects the core and provides strength. Such designs tend to be heavier than an equivalent sized model built using the traditional method, and would be much more likely to be found in a power model than a glider.
The lightest models are suitable for indoor flight, in a windless environment. Some of these are made by bringing frames of balsa wood and carbon fiber up through water to pick up thin plastic films, similar to rainbow colored oil films (microfilm). The advent of "foamies," or craft injection-molded from lightweight foam and sometimes reinforced with carbon fiber, have made indoor flight more accessible to hobbyists. Many come ready-to-fly, requiring little more than attachment of the wing and landing gear. See: ParkZone Slo-V.
Flying models can be built from scratch using published plans, or assembled from kits. Plans are intended for the more experienced modeller, since all parts must be sourced separately. The kit contains most of the raw material for an unassembled plane, a set of assembly instructions, and a few spare parts to allow for builder error. Assembling a model from plans or a kit can be very labour-intensive. In order to complete the construction of a model, the builder assembles the frame, covers it, and aligns the control surfaces.

ParkZone P-51D Mustang
To increase the hobby's accessibility to the inexperienced, vendors of model aircraft have introduced Almost Ready to Fly (ARF) designs. Compared to a traditional kit design, an ARF design reduces the amount of time, skill, and tooling required for assembly. The average ARF aircraft can be built with less than 4 hours of labor, versus 10-20+ for a traditional kit aircraft. More recently, Ready To Fly (RTF) radio control aircraft have all but eliminated assembly time (at the expense of the model's configuration options.) Among traditional hobbyist builders, RTF models are a point of controversy, as many consider model assembly as integral to the hobby.