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The history of airships

As early as decades ago, foreign countries showed a unique outdoor advertising media to people, with its huge shape, beautiful lines, and elegant The flying posture has been deeply engraved in people's minds in an instant. It is the super large outdoor advertising media - manned airship.

The manned airship is fifty or sixty meters long, more than ten meters tall, and has two huge advertisements on both sides of the boat. It flies slowly and steadily, like an advertising giant strolling in the air, interacting with numerous people. Compared with outdoor advertising, it stands out from the crowd and leads the way. Once this novel and unique giant outdoor advertising carrier appeared, it immediately received unanimous praise from many businesses and became a giant in outdoor advertising. Motorola, Nokia, Goodyear, Fuji, Kodak, Adidas, Coca-Cola and other well-known foreign brands have One exception has been advertised on airships, which shows the dominance of advertising airships in the field of outdoor advertising media.

Giant advertising airships can become the giants of outdoor advertising. They have advantages that other outdoor media do not have:

1. The advertising area is large, and each airship has two sides. More than two hundred square meters of advertising area.

2. It is highly time-sensitive and can appear anytime, anywhere in important occasions such as competitions, parties, ceremonial celebrations, and grand parades.

3. Good mobile performance. The advertising airship can not only fly at fixed points over stadiums, squares, and racing fields, but also can move and fly over seashores, villages, highways, and cities according to customer requirements. These advantages are better than those of other outdoor airships. Media cannot have both.

Across the world, in every football game and every large-scale racing competition, advertising airships will be seen above the stadium. While doing advertisements, they will also broadcast the game live. The hull of the airship is huge. The advertising slogans can be clearly seen from a long distance.

The history and current situation of domestic airships

In 1995, our country introduced a manned airship made in the United States and conducted commercial advertising flights for Nokia, to Beijing, Tianjin, and Shanghai. It flew in major cities such as Guangzhou and Hong Kong, and participated in important events such as the return of Hong Kong, the Tianjin World Table Tennis Championships, the Beijing World Women's Conference, and the Kunming World Expo. It was grounded due to damage in 1998, thus ending its glorious but short-lived mission. In addition to technical reasons for the grounding of large-scale commercial manned advertising airships in China, a series of cumbersome procedures such as declaration of flight procedures and route declaration, expensive flight fees, professional airship maintenance, and numerous venue rentals have limited its popularity. . US$12,000 or RMB 100,000 per flight day, with a minimum flight period of 15 days, is not acceptable to ordinary companies. Because the airship is imported and there is only one, if it is damaged or has incomplete parts, it is by no means as simple as repairing a car. If not, it may be grounded, causing unnecessary losses to customers. Moreover, the takeoff, landing, and storage of manned airships are inseparable from airports. There are not many small airports in China, and renting large civil airports is not easy. Based on the above reasons, it is not difficult to see that my country’s current national conditions are not suitable for large-scale civil airports. Market development of manned advertising airships. Could it be that such a good advertising carrier as the advertising airship has so easily withdrawn from the big stage of outdoor advertising media?

The advent of large-scale outdoor advertising remote-controlled airships

Although large-scale manned advertising airships have been grounded, a new force is replacing it and improving it. It takes the strengths of the manned airship and avoids the shortcomings of the manned airship. It tailors the current situation of the country and the market of the domestic advertising industry to reduce flight costs, simplify maintenance procedures, reduce the flight area, and use modern remote control technology to create the latest The most innovative advertising carrier is the perfect combination of high technology and modern advertising - a large outdoor advertising remote control airship.

As early as the early 1990s, some knowledgeable people in China had already begun to collect foreign information, explore and develop early remote control airships. Although the technology was not very mature, it was our own product after all. , through continuous improvement and innovation, gradually mastered this technology and officially entered commercial advertising flight in 1993, achieving very good advertising effects. Over the years, it has soared all over the country and participated in many important events, such as the opening ceremony of the Tianjin World Table Tennis Championships in 1995, the national annual spring and autumn sugar industry tobacco and alcohol ordering fairs, the Oktoberfest, Clothing Festival, Tourism Festival, Kunming World Expo and some well-known domestic and foreign companies and brands, such as Shanshan Suit, Luzhou Laojiao, Kongfujiajiu, Yanjing Beer, Tsingtao Beer, Snow Beer, Motorola, Epson, Adidas, etc. are countless, and remote-controlled advertising airships are all over the country. They are blooming everywhere, especially in economically prosperous coastal provinces, such as Hainan, Guangdong, Fujian, Zhejiang, Shandong and Dalian. Advertising flights are even more frequent.

Characteristics and market advantages of remote-controlled advertising airships

Why can remote-controlled advertising airships enter the outdoor advertising market so quickly? Because it perfectly retains and develops the advantages of large-scale manned advertising airships, they have carried out all aspects of in-depth and detailed design and demonstration. First, they reduced the size of the airship to 9 to 11 meters long, which greatly increased the airship's The scope of application has improved the flexibility of flight. It can take off and land calmly in a place the size of a school playground. It can be stored in the garage of a bus or a large truck. Although the advertising area is also small, each side is 9 to 12 square meters. The flight height of the remotely controlled airship is also much lower than that of the manned craft. Judging from the visual effects on the ground, the difference is very small, which is enough to replace the manned craft. Secondly, after the airship is reduced, the operation, use, transportation, and Maintenance has also been greatly simplified. Easy operation is its first advantage: since it is a remote-controlled airship, it does not require a professional driver to operate it. Ordinary people can be competent after a short-term technical training. During the training period, each person can pay Seven to ten days, depending on the number of people, fifteen to thirty days. One operator and three auxiliary personnel can complete the flight operation, which greatly saves human resources. Ease of use is its second biggest advantage: the preparation work before each flight of the remote-controlled airship takes 1.5 to 2 hours (including inflating, refueling, hanging advertising banners, and testing remote control equipment). During the flight interval, ropes can be fixed on the stool, and more It can be stored in a warehouse, garage or hall with a large door during the day and night, which is very convenient and fast. Ease of transportation is its third major advantage; the remote-controlled airship is assembled from multiple parts (divided into three parts: airbag, pod and tail). It is very small when not flying. A Xiali or Xiaomian can It can be pulled away, and a minibus can pull away all personnel, gas bottles and airships for multi-day, multi-location operational flights. Easy maintenance is its fourth major advantage; since the engine and remote control used by the remote control airship are imported from Japan, the failure rate is low. You only need to charge it regularly according to the instructions, clean the carburetor and spark plugs, and perform some simple daily maintenance. , the maintenance time is less and not complicated. Remote-controlled advertising airships can not only do advertising, but can also do many related businesses, such as aerial photography and aerial photography; aerial photography can be carried out by installing a camera or video camera on the gondola of the airship. The business scope can range from land resource management and planning to environmental protection. Monitoring of pollution and assessment of agricultural growth situation. As small as the construction and development of cities, aerial photos of factories, mines, enterprises and new residential buildings, aerial broadcasts of various sports competitions. With the remote control airship, you no longer have to worry about spending a lot of money, energy, and going through complicated procedures to rent a real aircraft for aerial photography. Aerial photography is no longer an unattainable dream. The remote control airship will make your dream come true. . After years of continuous improvement and improvement, the technical indicators and safety of remote control airships have been greatly improved. Not only that, based on the large-scale outdoor remote-controlled airship technology, a small indoor electric remote-controlled airship has also been developed, with a body length of 2 to 3 meters, which can fly in theaters, stadiums, and TV studios.

Based on the above advantages, it is not difficult to see that the remote control airship is very suitable for various advertising companies and various enterprises to purchase and use it. It has low cost and quick results. It will develop commercial advertising from the ground to the air, from static to It is dynamic and changes from silent to sound. The remote control airship adopts a streamlined shape with good aerodynamic performance, strong wind resistance, stable flight, and flexible maneuverability. It can take off and land vertically, dive and climb, move forward and backward, hover in the air, scatter information, and release colored smoke. , aerial photography, etc., showing a novel advertising carrier to the advertising industry. After the public is tired of being bombarded by conventional media every day, remote-controlled advertising airships make your advertisements truly the center of attention.

Why does the helicopter fly upward?

Simply put, the speed below the airflow passing through the helicopter rotor is greater than the speed above it. According to Niu's two and three laws, it can be seen 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 upward.

Information on the Japanese F-2 fighter jet

The F-2 is a development model developed by Japan and the United States based on the concept of the F-16 "Agile Falcon". The Guard's next-generation combat support aircraft and advanced trainer aircraft are put into active service, mainly used for air defense and anti-ship attack, and approximately 130 are needed. The design of the F-2 is based on the 40th batch of F-16C single-seat fighter jets. 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.), the cockpit is lengthened, the wing area is increased and a single composite material structure is adopted. Radar absorbing material is used on the leading edge of the wing, and is applied on the fuselage and tail. Advanced composite materials and advanced structural technology, plus a drag parachute. The power unit is General Electric's F110-GE-129 engine. The F-2's fuselage cross-section is basically the same as the F-16, but in order to increase the internal capacity, the length of the middle section of the fuselage is slightly increased. The F-2's wings have been redesigned, with a wing area of ??34.84 square meters, 25% more than the F-16, and the wingspan has increased from the F-16's 9.45 meters to 11.13 meters. There are 6 hardpoints under each wing, and air-to-air missile launchers are installed on the wingtips. The leading edge sweep angle of the wing is 33°22′, the twist angle is 2°30′, and there is no upward reflection. The aspect ratio is 3.35, the root-to-tip ratio is 0.225, and the relative thickness is 4.3%.

In order to compensate for the increased moment due to the lengthened fuselage and increased wing area, the horizontal tail area was increased from the F-16's 5.92 square meters to 7.05 square meters. The aspect ratio of the horizontal stabilizer is 2.25, the leading edge sweep is 35°, there is 8° upward reflection, and the root-to-tip ratio is 0.464. The vertical tail area is the same as that of the F-16, but a drag parachute is installed at the root. The leading edge sweep angle is 47.5°, the aspect ratio is 1.29, and the root-to-tip ratio is 0.437. The F-2 also added two ventral fins to the rear of the fuselage, each with a span of 0.699 meters and an area of ??0.75 square meters. The leading edge is swept back at 30° and tilted outward at 15°. The aspect ratio is 0.65 and the root-to-tip ratio is 0.653.

The space shuttle combines 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 can re-enter the atmosphere and glide like an airplane. Landing is a new type of multi-functional space vehicle. Its structure mainly consists of three parts. ① Orbital vehicle, including three-engine rocket, cockpit, crew cabin and cargo compartment. ② Used as an external storage tank to provide propulsion. ③There are two rocket boosters, which use solid fuel. The main purpose of the space shuttle is space transportation and satellite services. It can get close to other spacecrafts to deliver items and repair services. Interstellar observation, military and geographical observation and photography can also be carried out. Due to its large size (over 20 meters high and over 50 meters long), it can also be used as a large space building. When the space shuttle takes off, it can be launched vertically like a rocket. During operation, in order to reduce the burden, the solid fuel rocket booster and the external propulsion tank can be thrown away after the work is completed. The main machinery of the space shuttle can continue to be used after being refurbished after returning to the ground. The United States began developing and implementing the space shuttle program in 1972. The first space shuttle "Enterprise" began testing in various complex conditions on the ground and in the atmosphere in 1977. In 1981, the space shuttle Columbia made its first test flight in space and successfully returned to the ground after three days of flight. History of Hot Air Balloons In the 18th century, the French paper manufacturers Montgolfier brothers were inspired by the rising of shredded paper in the stove. They used paper bags to collect hot air for experiments, so that the paper bags could continue to rise with the air flow. On June 4, 1783, the Montgolfier brothers performed a public performance in the Place Annone in Lyon. A simulated balloon with a circumference of 110 feet rose and flew 1.5 miles. On September 19 of the same year, in front of the Palace of Versailles in Paris, the Montgolfier brothers performed a hot-air balloon launch performance for the king, queen, court ministers and 130,000 Paris citizens. On the afternoon of November 21 of the same year, the Montgolfier brothers conducted the world's first manned air navigation at Chateau Muerte in Paris. The hot air balloon flew for 25 minutes and landed in Place d'Italie after flying over half of Paris. nearby. This flight preceded the Wright brothers' flight by a full 120 years. After World War II, high technology popularized ball cover materials and heating fuels, making hot air balloons a public sport that is not restricted by location and is simple and convenient to operate. In the 1980s, hot air balloons were introduced to China. In 1982, Mr. Forbes, the founder of the famous American publication "Forbes" magazine, came to China on a hot air balloon and motorcycle tour. From Yan'an to Beijing, he fulfilled his wish to fly to every country in the world. Hot air ballooning is becoming increasingly popular as a sport, and it once set a record of rising to a height of 34,668 meters. From August 11 to 17, 1978, "Double Eagle III" successfully flew across the Atlantic Ocean, and in 1981, "Double Eagle V" successfully crossed the Pacific Ocean. There are now more than 20,000 hot air balloons flying around the world. Our country currently has more than 100 balls, and has successfully held large-scale competitions such as the first and second Beijing International Hot Air Balloon Invitational Tournament, Taishan International Hot Air Balloon Invitational Tournament, 99' National Hot Air Balloon Championships, Space Shuttle Set Rockets, Satellites and Aircrafts It is a new type of multi-functional space vehicle that combines the technical features of a rocket into a vertical launch into space orbit, can fly in space orbit like a satellite, and can re-enter the atmosphere and glide to land like an airplane. Its structure mainly consists of three parts. ① Orbital vehicle, including three-engine rocket, cockpit, crew cabin and cargo compartment. ② Used as an external storage tank to provide propulsion. ③There are two rocket boosters, which use solid fuel. The main purpose of the space shuttle is space transportation and satellite services. It can get close to other spacecrafts to deliver items and repair services. Interstellar observation, military and geographical observation and photography can also be carried out. Due to its large size (over 20 meters high and over 50 meters long), it can also be used as a large space building. When the space shuttle takes off, it can be launched vertically like a rocket. During operation, in order to reduce the burden, the solid fuel rocket booster and the external propulsion tank can be thrown away after the work is completed. The main machinery of the space shuttle can continue to be used after being refurbished after returning to the ground.

The United States began to develop and implement the space shuttle program in 1972. The first space shuttle "Enterprise" began testing in various complex conditions on the ground and in the atmosphere in 1977. In 1981, the space shuttle Columbia made its first test flight in space and successfully returned to the ground after three days of flight. Since then, manned space shuttles have begun to enter space.