Want to know about the led zeppelin Post?

As early as several decades ago, there was a unique outdoor advertising media in foreign countries. Its huge figure, beautiful lines and elegant flying posture have been deeply imprinted in people's minds in an instant. It is a super-large outdoor advertising media-manned airship.

Manned airship, fifty or sixty meters long and more than ten meters high, has two huge advertisements hanging on both sides of the hull, flying slowly and smoothly, like an advertising giant strolling in the air. Compared with many outdoor advertisements, it stands out and occupies a dominant position. Once this novel and unique giant outdoor advertising carrier appeared, it was immediately favored by many businesses and became a giant of outdoor advertising. Motorola, Nokia, Goodyear, Fuji, Kodak, Adidas, Coca-Cola and other well-known foreign brands all advertise on airships, which shows the dominant position of advertising airships in outdoor advertising media.

Giant advertising airship can become a giant of outdoor advertising, with advantages that other outdoor media do not have:

First, the advertising area is large, with more than 200 square meters of advertising area on both sides of each airship.

Second, it has strong timeliness and can appear in important occasions such as competitions, parties, ceremonial celebrations and grand parades anytime and anywhere.

Third, the mobility is good. Advertising airships can fly over stadiums, squares and racetracks at fixed points, and can also fly over beaches, villages, highways and cities according to customer requirements. These advantages are not possessed by other outdoor media at the same time.

All over the world, every football match and every big car race will see the figure of advertising airship, advertisements and live broadcasts of the game over the stadium. The huge advertising slogan on the ship can be seen clearly from a distance.

The History and Present Situation of Domestic Airships

1995, China introduced American-made manned airship, flew for Nokia in commercial advertisements, flew in big cities such as Beijing, Tianjin, Shanghai and Guangzhou, participated in important events such as the return of Hong Kong, Tianjin World Table Tennis Championships, Beijing World Women's Congress and Kunming World Expo, and was grounded due to damage in 1998, thus ending its brilliant but short-lived mission. In addition to technical reasons, a series of complicated procedures, such as flight instruction declaration and route declaration, expensive flight expenses, professional airship maintenance and numerous venue leases, all limit its popularity. Every flight day 12000 USD, that is, 10000 RMB, and the shortest flight time 15 days, is unacceptable to ordinary enterprises. Because there is only one imported airship, if there is damage or incomplete accessories, it is not as simple as repairing the car, otherwise it will be grounded and cause unnecessary losses to customers. Moreover, the take-off, landing and storage of manned airship are inseparable from the airport. There are not many small airports in China, and it is not easy to rent large civil airports. It is not difficult to see that China's current national conditions are not suitable for the market development of large manned advertising airship. Advertising airship is such a good advertising carrier, is it so easy to quit the big stage of outdoor advertising media?

Large outdoor advertising remote control airship comes out

Although the large manned advertising airship has been grounded, a new force is replacing it and perfecting it. It absorbs the advantages of manned airship and avoids the disadvantages of manned airship. According to the national conditions and the present situation of domestic advertising market, we should adjust measures to local conditions, reduce flight costs, simplify maintenance procedures, reduce flight venues, and use modern remote control technology to create the most novel advertising carrier, which is the perfect combination of high technology and modern advertising-a large-scale outdoor advertising remote control airship.

As early as the early 1990s, some people of insight in China began to collect foreign information and explore the development of early remote-controlled airships. Although the technology is not very mature, after continuous improvement and innovation, it is our own product, and gradually mastered this technology, officially entered the commercial flight in 1993, and achieved very good advertising results. Over the years, it has soared in the north and south of the motherland, and also participated in many important activities, such as the opening ceremony of Tianjin World Table Tennis Championships 1995, the sugar industry tobacco and alcohol ordering meeting in spring and autumn every year, the beer festival, the clothing festival, the tourism festival, the Kunming World Expo and some well-known enterprises and brands at home and abroad, such as shirt suits, LU ZHOU LAO JIAO CO.,LTD, Kongfujia wine, Yanjing beer, Tsingtao beer, Snow beer and Motorola. Remote-controlled advertising airships can be seen everywhere in China, especially in the economically prosperous areas of coastal provinces, and advertising flights are more frequent in Hainan, Guangdong, Fujian, Zhejiang, Shandong and Dalian.

Characteristics and market advantages of remote-controlled advertising airship

Why can the remote-controlled advertising airship enter the outdoor advertising market so quickly? Because it perfectly retains and develops the advantages of large-scale manned advertising airship, they have carried out in-depth and detailed design and demonstration in all aspects. First of all, they reduced the size of the airship from 9 meters to 1 1 meter, which greatly increased the application scope of the airship and improved the flight flexibility. The school playground can take off and land calmly, and the garage of bus or truck can be stored. Although the advertising area is also very small, but each side is 9 to 12 square meters, the flying height of the remote-controlled airship is much lower than that of the manned ship, so the difference in ground visual effect is very small, which is enough to replace the manned ship. Secondly, after the airship is reduced, the operation, use, transportation and maintenance of the whole boat are greatly simplified. Its first advantage is that it is simple to operate: because it is a remote-controlled airship, it does not need professional drivers to operate, and ordinary people have received short-term technical training. One operator and three assistants can complete the flight operation, which greatly saves human resources. Easy to use is its second advantage: the preparation work of the remote-controlled airship before each flight is 1.5 to 2 hours (including inflation, refueling, hanging advertising banners and testing remote-controlled equipment), and it can be fixed on a stool with ropes during the flight interval, and it can be stored in a warehouse, garage or hall with large doors for many days at night, which is very convenient and fast. Simple traffic is its third advantage; The remote control airship is composed of several parts (including airbag, engine room and tail wing). When it is not flying, it is very small. You can take a Li Xia or a small plane, take a CMB, and take people, gas cylinders and airships to fly for many days and places. Simple maintenance is its fourth advantage; Because the engine and remote controller used in the remote-controlled airship are imported from Japan, the failure rate is low, and only the carburetor and spark plug need to be charged regularly according to the instructions on weekdays, and some simple daily maintenance is needed, so the maintenance time is less and it is not complicated. Remote control advertising airship can not only advertise, but also do many related businesses, such as aerial photography; Aerial photography can be carried out by adding a camera or video camera to the airship cabin, and the business scope can be as large as land resource management and planning, environmental pollution monitoring and agricultural growth evaluation. From the construction and development of cities to the aerial photography of factories and mines, new residential buildings and various sports competitions. With the remote control airship, you will no longer worry about spending a lot of money, energy and complicated procedures to rent a real plane for aerial photography. Aerial photography is no longer an unattainable dream, and the remote control airship makes your dream come true. After years of continuous improvement and perfection, the technical indicators and safety of the remote-controlled airship have been greatly improved. Moreover, on the basis of large outdoor remote control airship technology, a small indoor electric remote control airship is developed, which is 2 to 3 meters long and can fly in theaters, gymnasiums and TV studios.

Based on the above advantages, it is not difficult to see that the remote control airship is very suitable for all kinds of advertising companies and enterprises to buy and use, with low cost and quick effect. It develops commercial advertisements from the ground to the air, from static to dynamic, from silent to audio. The remote-controlled airship has a streamlined appearance, good aerodynamic performance, strong wind resistance, stable flight and flexibility, and can take off and land vertically, dive and climb, move forward and backward, hover in the air, release information, release colored smoke and fly in the air. After the public has long been tired of the daily bombing of conventional media, the remote-controlled advertising airship really makes your advertisement become the focus of public attention.

Why does the helicopter fly upwards?

Simply put, the speed under the helicopter rotor is higher than the speed above. According to Newton's second law and Newton's third law, we can know that the rotor has a strong effect on the airflow, and the airflow also has a reaction force on the rotor. So the helicopter can fly upwards.

Information on Japanese F-2 fighter

F-2 is a development model developed by Japan and the United States with the concept of F- 16 "Agile Falcon". It will be put into active service as the next-generation combat support aircraft and advanced trainer of Japan Air Self-Defense Force, mainly used for air defense and anti-ship attacks, and it needs about 130 aircraft. The design of the F-2 is based on the 40th batch of F- 16c single-seat fighters. The main changes include: lengthening the fuselage, redesigning the radome, and integrating advanced electronic equipment (including active phased array radar, mission computer, INS and integrated electronic weapon system, etc. ), lengthen the cockpit, increase the wing area, and adopt a single composite structure. The leading edge of the wing is made of radar absorbing material. The power plant is the F110-GE-129 engine of General Electric Company. The fuselage section of the F-2 is basically the same as that of the F- 16, but in order to increase the internal capacity, the length of the middle section of the fuselage is slightly increased. The wing of the F-2 has been redesigned. The wing area is 34.84 square meters, which is 25% higher than that of F- 16. The wingspan of F- 16 is increased from 9.45 meters to 1 1. 13 meters. There are six hard hanging points under each wing, and an air-to-air missile launcher is installed at the wing tip. The leading edge of the wing has a sweepback angle of 33 22' and a torsion angle of 2 30', and there is no backlash. The aspect ratio is 3.35, the apical ratio is 0.225, and the relative thickness is 4.3%. In order to compensate the increased moment due to the lengthening of fuselage and the increase of wing area, the horizontal tail area is increased from 5.92 square meters in F- 16 to 7.05 square meters. The aspect ratio of the horizontal stabilizer is 2.25, the leading edge sweepback angle is 35, the upside down is 8, and the tip ratio is 0.464. The vertical tail has the same area as F- 16, but a resistance umbrella is installed at its root. The leading edge sweepback angle is 47.5, the aspect ratio 1.29 and the tip ratio is 0.437. The F-2 also added two ventral fins at the rear of the fuselage, each with a wingspan of 0.699 meters and an area of 0.75 square meters. The leading edge is swept back 30 degrees, inclined outward 15 degrees, with an aspect ratio of 0.65 and a tip ratio of 0.653.

The space shuttle combines the technical features of rockets, satellites and airplanes. It can be launched vertically into space orbit like a rocket, fly in space orbit like a satellite, and glide into the atmosphere like an airplane. It is a new type of multifunctional spacecraft. Its structure mainly consists of three parts. (1) Orbiter, including three rocket engines, cab, passenger compartment and cargo compartment. ② Used as an external fuel tank to provide propulsion. (3) There are two rocket boosters, which use solid fuel. The main uses of the space shuttle are space transportation and satellite service. It can transport goods and carry out maintenance close to other spacecraft. You can also carry out interstellar observation, military geographical observation and take photos. Because of its large volume (more than 20 meters high and 50 meters long), it can also be used as a large space building. After the space shuttle takes off, it can be launched vertically like a rocket. In order to reduce the burden of operation, the solid fuel rocket booster and propulsion outer tank can be thrown away after the work is completed. The main machinery of the space shuttle can continue to be used after being renovated after returning to the ground. The United States began to develop and implement the space shuttle program in 1972. The first space shuttle, Enterprise 1977, began to test in various complicated ground and atmosphere. 198 1 year, the space shuttle Columbia flew in space for the first time and successfully returned to the ground after three days of flight. The history of hot air balloon18th century, inspired by the rising of paper in the stove, the French paper maker Montgomerie brothers experimented with paper bags to collect hot air, so that the paper bags could rise with the airflow. 1On June 4th, 783, the Montgomerie brothers gave a public performance in Annone Square in Lyon. A simulated balloon with a circumference of 1 10 foot rose and floated 1.5 miles. On September 19 of the same year, in front of the Palace of Versailles in Paris, the Mongols performed a hot air balloon launch performance for the king, queen, court ministers and130,000 Parisians. In the same year, on the afternoon of165438+1October 2/kloc-0, the Mongerfield brothers made the world's first manned air voyage in Fort Muitt, Paris. The hot air balloon flew for 25 minutes, flew over half of Paris and landed near Plaza Italia. This flight was earlier than the Wright brothers' plane 120 years. After World War II, high technology popularized spherical skin materials and heating fuel, and hot air balloon became a mass sports event with no location restrictions and simple and convenient operation. In 1980s, hot air balloons were introduced to China. From 65438 to 0982, Mr. Forbes, the founder of the famous American publication Forbes magazine, traveled to China by hot air balloon and motorcycle, from Yan 'an to Beijing, and realized his wish to fly to every country in the world. As a sport, hot air balloon is becoming more and more popular. It has set a record of rising by 34,668 meters. From August 1978, 1 1 to June 17, Shuang Ying III successfully crossed the Atlantic Ocean, and in June 198 1, Shuang Ying V successfully crossed the Pacific Ocean. Now there are more than 20,000 hot air balloons flying around the world. At present, there are more than 100 balls in China, and the first and second Beijing International Balloon Invitational Tournament and Taishan International Balloon Invitational Tournament have been successfully held. The' 99 National Balloon Championship Space Shuttle integrates the technical characteristics of rockets, satellites and airplanes. It can be launched vertically into space orbit like a rocket, fly in space orbit like a satellite and glide into the atmosphere like an airplane. It is a new type of multifunctional spacecraft. Its structure mainly consists of three parts. (1) Orbiter, including three rocket engines, cab, passenger compartment and cargo compartment. ② Used as an external fuel tank to provide propulsion. (3) There are two rocket boosters, which use solid fuel. The main uses of the space shuttle are space transportation and satellite service. It can transport goods and carry out maintenance close to other spacecraft. You can also carry out interstellar observation, military geographical observation and take photos. Because of its large volume (more than 20 meters high and 50 meters long), it can also be used as a large space building. After the space shuttle takes off, it can be launched vertically like a rocket. In order to reduce the burden of operation, the solid fuel rocket booster and propulsion outer tank can be thrown away after the work is completed. The main machinery of the space shuttle can continue to be used after being renovated after returning to the ground.

The United States began to develop and implement the space shuttle program in 1972. The first space shuttle, Enterprise 1977, began to test in various complicated ground and atmosphere. 198 1 year, the space shuttle Columbia flew in space for the first time and successfully returned to the ground after three days of flight. From then on, the manned space shuttle began to enter space.