Custom Search

Two new Su-34 , two-seat, fighter bombers were delivered to Lipetsk AB combat training center – Russia’s Top Gun school on December 22, 2009.

An agreement was made previously to deliver an total operational force of 24 aircraft by the end of 2010. The future goal developed by manufacturer is that a total force of 200 bombers will be completed by 2020.

Enjoy some wonderful photographs of this majestic aircraft:

It was just four days ago when airbus completed maiden flight of A400M and today on 15th December, 2009 at 17:27 GMT (10:27 PST), another similar event took place. This time it was the rebel manufacturer Boeing. Long awaited B787 Dreamliner took off the ground after more than a year delay. The aircraft lifted off the ground from Everett, Wash and after 5 hours of flight settled at Seattle. It flew over the northern state of Idaho.

B787-Dreamliner is well-known for its high speed and the use of composite parts in its structural parts. The manufacturer claims to have a maximum speed just below Mach 1 and thus making it to be the fastest commercial aircraft. It has a maximum range of about 15000 kilometres.

Several types of models are prepared like 787-3, 787-8 and 787-9. The MTOW of these models are 170,000kg, 228,000kg and 248,000kg respectively.

Along with this, the competition in aircraft manufacturing races between Airbus and Boeing. Just couple years back, Airbus launched A380 which is the largest passenger aircraft with capacity of more than 800 passengers and again Boeing now launched fastest commercial plane. Airbus goes for passenger capacity while Boeing targeted speed performance as the race for benchmark continues.

Quantum: Quantum is the minimal unit of any kind of physical entity. In simple words, it is the smallest quantity that can be thought of. For example: Photon is the smallest element of light, thus photon is the light quantum.

One another example that I can think of is the digital technology that we use intensely. We have now microprocessor, transistors and so on. But the basis of all these things starts with the concept of bits and bytes. Similarly, the physical world that we pass around is also composed of bits. These infinitesimal objects are the quanta. Everything is made up of small bits called quantum.
(Note: one quantum, two quanta)

Quantum modelling was started by famous German physicist Max Plank in 1900 which then was followed by Albert Einstein and the field is still flourishing till the date. The breakfast era of Quantum Mechanics includes names like Pauli, Heisenberg, Schrödinger, Born, Rutherford and Bohr. Eventually we are in a new era and by now we have better understanding of the quantum and the way universe works.

Believing the unbelievable: The world of quanta or the world of small is different to the world that we face. It is thus a vague part of physics to come across quantum mechanics. One has to reformat himself and the way he thinks. The system of logic works in a different way in a quantum world. The other thing one should not be confused is that the quantum world works differently compared to our world although they are the fundamentals of our world. As an example, steam is hot while ice is cold in our living world. On the other hand, the quantum world defines that they are composed of similar quanta and hence they have similar properties. Such logics make the world of quanta very different to our world.

Applications of Quantum Mechanics:-
Planck's constant is very important to quantum theory and quantum mechanics in general. It states that the energy of each quantum is equal to the frequency of the radiation multiplied by the universal constant: E=f*h, where h is 6.63 * 10E-34 Js.

Quantum mechanics can be referred to as the mathematical description of physical reality of the matter, like almost any other scientific model. According to quantum mechanics the most complete description we can make of a system is its wavefunction, which is mathematically speaking just a number varying between time and place.

Quantum theory can provide accurate descriptions for phenomenons such as black body radiation and the stability of electron orbitals.

The famous quantum theory of the atom was primarily developed as an explanation for the electron's staying in its orbital, which couldn't at that time be explained by Newton's laws of motion.

Quantum particles have one very unique property, namely they can be in different states at the same time. This is referred to as the "superposition" of two conditions. Based on this for instance the 'spin' of an electron can be pointing in two different directions at once.

Many scientists believe that super-fast quantum computer are only matter of time.

Quantum computers have also unlimited potential and they are likely able to fix problems that would normally take millions of years to solve, much faster than ordinary computers. Currently the biggest problem with development of quantum computers is that scientists can only hold a limited number of atoms in place for a very short period of time.

Quantum mechanics allows a quantum computer built on these principles (still theoretical, to perform tasks that are currently thought impossible to do efficiently on a normal computer, for instance breaking with ease all currently possible encryption standards.

Quantum mechanics plays key role for understanding how individual atoms combine covalently to form chemicals or molecules, and is so well used in chemistry that is even known under the name of quantum chemistry.

Quantum mechanics has had significant impact on today's modern technology such as lasers, transistors and diodes.

Nepal’s national carrier, Nepal Airlines Corporation (NAC) is modernising its international fleet with one A330-200 wide-body and one Airbus A320 single aisle aircraft. The new Airbus aircraft will be deployed on international services to Japan and will start connecting Nepal to Europe with direct flights.
The Memorandum of Understanding (MoU) was formalised at the Dubai air show.

The two class, A330-200 will be deployed on routes to Europe and North Asia and will play an instrumental role in developing Nepal’s tourism industry especially around to country’s ‘Visit Nepal 2011’ tourism campaign to attract foreign tourists. The dual class A320, will be deployed on regional routes and operate as far as the Middle East as well as in South East Asia.

Nepal Airlines Corporation (NAC) was incorporated on 1 July 1958 through enactment of Nepal Airlines Corporation Act. 2019. The Airline currently flies to 10 international destinations and 30 spectacular domestic locations in the heart of the Himalayas.

Nepal oficials seem happy with the MoM of these new airliners, but it is to see in the coming days whether these aircraft will boost their fleet or will these aircraft have similar condition as to those of the previous Boeings'.

Sources: Airbus, Nepal Airlines Corporation, NepalNews, Kantipur

The aviation history of Nepal started in early 1950's. Until 1951, only a few foreigners had penetrated into Nepal. They were mainly British officers of the Gurkha troops, a few scholars and friends of the Royal family. Later on, Indian air companies started their operation for business purposes, and connected Nepal with Indian cities. After the establishment of the national flag carrier, the Royal Nepal Airlines (RNA), the route expansion of civil aviation made extensive progress domestically and internationally.

The civil aviation service started in Nepal in 1953 with three old American -made DC-3 Dakotas belonging to an Indian company. After five years, Nepal established its own registered airline, Royal Nepal Airlines Corporation in July 1958 with one DC-3. At the beginning,its service was limited to Indian cities like Patna, Calcutta and Delhi in the International Sector and to Simara, Pokhara and Biratnagar in the Domestic Sector.

Royal Nepal took over an international schedule in 1960. Starting with a fleet of Douglas DC-3's, the airline quickly moved on to the turboprop Fokker F-27. The commissioning of the remarkable Twin Otter and Pilatus Porter aircraft into the Royal Nepal Airlines fleet in 1970s brought about a quick and easy way of accessing many of the remote regions of the kingdom.

By the early 1970s the airline had introduced Hawker Siddeley HS-748 turboprops, and Boeing 727 jet airliners were introduced in 1972 after Kathmandu's runway had been extended for medium sized jet operations. The Boeing 727s were gradually replaced by Boeing 757s.

At present RNAC operates 10 international destinations namely Banglore, Delhi and Mumbai , Bangkok, Hong Kong, Shanghai, Osaka, Singapore and Kuala Lumpur and Dubai. In Domestic operations it connects more than 35 destinations inside Nepal.

More than 90 percent of Nepal's area is covered by mountains. Moreover, Nepal is also landlocked. Without the use of air transport, remote places are cut off from point of view of tourism, food supply and other essential requirement. Rural places such as Solukhombu, Mustang, Humla, Dolpa are accesible by airways only as there are no any roadway connection to other parts of the country.

The transport system being the main factor for the economic development of the country, and RNAC is a strong vehicle for national integration and has proved to be a symbol of freedom movement, both within and outside the country. It is the pride of Nepal.

Source: Nepal Airlines Corporation, Kathmandu, Nepal

Airbus has recently launched its first military airliner, which it claims to be the world's most advanced airlifter. It is launched at a time when Lockheed United States is working on JSF F-35. It completed its maiden flight on 11th of December. It took off at 10:15GMT from Seville, Spain and landed on London, England at 14:05 GMT. During the 3-hour, 47-minute-long first flight, the six-member crew validated a significant portion of the A400M's flight envelope, and the aircraft was joined in formation by a Spanish Air Force.

It is powered by four 11,000-shp turboprop engines and has a MTOW of 141,000 kg. It can cruise at 780 km/h (480 mph; 420 kn) (Mach 0.68 - 0.72) and has flying range of about 3300 kilometers.

It has been built in colabration of eight different European nations. The partner nations, France, Germany, Italy, Spain, the United Kingdom, Turkey, Belgium, and Luxembourg, signed an agreement in May 2003 to buy 212 aircraft. Besides that, Malaysia and South Africa are also associated with this production.

More to come ...

There are four main types of forces acting on an aircraft during flight. These four type of forces are very important to know for the basic understanding of flight. The four main type of forces acting on an aircraft are namely Lift, Weight, Thrust and Drag as shown in the picture below.
Lift is an upward acting force which counteracts the weight of the aircraft and hence lifts the aircraft above the ground. Lift is produced by the wings which might seem amazing, and actually it is amazing. The profile (shape) of airfoils of wings is made in such a way that it causes pressure difference in the upper and lower part of the wing. This difference in pressure results in the lift.
Similarly, thrust is another type of force which is in the direction of flight and it is responsible for the forward movement. This force is basically the force used to counteract the drag. Thrust is provided in modern aircraft by the engine motors.

Thus the challenge of engineers of today and future is to increase the performance of aircraft. This means that the challenge for engineers is to increase the lift and thrust, whilst decreasing the drag and weight forces.

Latest Science News

Blog Archive

Visitor Counter