A fire at Brazil's Olympic velodrome was put out on Sunday

A fire at Brazil's Olympic velodrome was put out on Sunday by fire fighters who battled for hours to 

extinguish the blaze in Rio de Janeiro's Olympic Park. The blaze was seemingly caused by a hot-air 

balloon that fell on the building during Saturday night.Evangle Luo of TTFLY reported.

The governor of Kentucky, United States condemn news media’s behavior of shooting with drones.

Information from TTFLY:The governor of Kentucky, United States condemn news media’s behavior of shooting with drones.

Attention! The “Flight Ban” Implemented in Guangdong and Tianjin of China since 1st August.

Attention! The “Flight Ban” Implemented in Guangdong and Tianjin of China since 1st August.Evangle Luo of TTFLY reported.

London Gatwick's 2.7 Billion Pounds Investment Plan to Benefit Growing Number of Chinese Visitors and Paves Way for More China Links

Travellers from China are set to benefit from increased investment at London Gatwick Airport, as the 

airport today announced it will invest 1.15 billion pounds over the next five years - with 240 million 

pounds planned for 2017/18 alone - as it plans for more growth and improved efficiency, while also 

maintaining its record levels of passenger satisfaction.

(Evangle Luo of TTFLY shared with you)

Helicopter fast-roping! The three-dimensional (land, sea and air) emergency response exercise held in Shanghai, China.

Helicopter fast-roping! The three-dimensional (land, sea and air) emergency response exercise held in Shanghai, China. Evangle Luo of TTFLY reported.

Alibaba researchers show the use of sound to attack smart devices

The operating principle of general UAV jammer is to send interference signals, cut off the communication between the UAV and the controller, and disrupt the GPS navigation system, then force the UAV to automatically land.

However, at the Black Hat Security Conference in Las Vegas, researchers at the Alibaba Security Department demonstrated how to use sound to attack the UAV.

It is said this kind of sound weapon mainly attacks smart devices which depend on MEMS Sensor, such as gyroscopes and accelerometers, to input signals.

At the scene, Alibaba researchers shown the use of sound to attack iPhone 7, Samsung Galaxy S7, DJ UAV, VR display and Millet electric balance board.　　

Most commercial gyroscopes are tuning fork gyroscopes, and if the external vibration matches the resonant frequency of the gyroscope, the sensor will cause the sensor to send the wrong data to the device. By tuning the sound signal to the resonant frequency of the MEMS system, the researchers demonstrated that they could cause the sensor to send fatal data, resulting in failure of the device or software that relied on the sensor. Therefore, it can make the UAV fall, the robot failure, lose the sense of direction of VR and AR, and even interfere with the car's airbag sensor.

(Evangle Luo of TTFLY shared with you) 

How to effectively prevent airsickness?

Many passengers will show airsickness, vomiting, stomach pain or palpitation in the plane. Some are because of their physical quality, while another is due to improper diet. Here are some notes that passengers should pay attention in taking plane:

Do not embark on an empty stomach

With the change of air height, temperature, pressure and other factors, large heat will be consumed. Therefore, people should pay attention to intake foods with high calorie. Generally, before taking plane, passengers can choose from bread, snacks, noodles, yogurt, green leafy vegetables, lean meat, fruit and other food according to the situation.

Do not drink too much

Excessive alcohol can disturb the brain to deal with messages from surrounding environment and easily lead to airsickness symptoms. In addition, alcohol can be dissolved in the body fluid of inner ear and cause disoriented.

Do not eat too much

Under the condition of high-altitude, food produces large amounts of gas in the body. Eat too much, on the one hand, it will increase the burden of heart and blood circulation, on the other hand it can cause nausea, vomiting, airsick. And eating too greasy and multi-fiber food is also easy to cause discomfort. In the height of 5000 meters, the gas in body increased by two times than in the ground.  If eating too much such kind of food, gastrointestinal will expand and the feeling of chest tightness bloating will be increased during the flight.

In the course of the flight, provided that you really have the symptoms of airsickness; you can read the magazine, watch movies, to divert your attention, or take a nap.

(Evangle Luo of TTFLY shared with you)