30 results about "Exterior field" patented technology

A vehicle vision system includes a vehicle having a body surface and a vehicle element generally at the body surface. The vehicle element has a normal distance dimension relative to the body surface of the vehicle. The vehicle vision system includes an imaging device having an exterior field of view generally exterior of the vehicle for capturing images of a region external of the vehicle. An extender element is at the body surface and extends outwardly therefrom, and the vehicle element is disposed at an outer surface of the extender element, whereby the extender element extends the normal distance dimension of the vehicle element for accommodating the imaging device. The imaging device is disposed at least partially within the extender element, whereby the presence of the imaging device in the extender element is at least partially masked or camouflaged by the extender element and the vehicle element.

The present invention provides a simple method for measurement of the sweepback angles of a missile wing. Three datum points A, B and C which are not located on the same line are arranged at the upper of the missile wing, lines are scribed on the missile wing and a projectile body, a rope and a ruler are employed to measure the distances among the datum points and the distances between the datum points to the Dk; a coordinate system is built in a plane ABC; and the space coordinate values of all the feature points Dk and the sweepback angles of the missile wing are obtained through calculation according to the geometric equation, and the confidence interval of the sweepback angles of the missile wing is calculated according to the measurement precision of the ruler. The simple method for measurement of sweepback angles of the missile wing employs common tools to measure the sweepback angles of the missile wing, is easy to realize and is not high in the requirement of the measurement environment, and is very suitable for measurement of the sweepback angles of the missile wing in the field conditions; the simple method for measurement of sweepback angles of the missile wing can replace an expensive three dimensional measuring machine or a three-dimensional measurement machine to measure the sweepback angles of the missile wing so as to observably save the measurement cost; and the simple method for measurement of sweepback angles of the missile wing can calculate the confidence interval of the sweepback angles of the missile wing so as to provide reference data for an emission decision.

The invention provides a ram air turbine wind tunnel experimental testing method. The method comprises the following steps: 1: installing a ram air turbine model in a wind tunnel test section; 2: determining the inlet control surface of the model in the wind tunnel test section; 3: determining the outlet control surface of the model in the wind tunnel test section; 4: determining the flow line bending control surface of the model in the wind tunnel test section; 5: determining a control body of the model in the wind tunnel test section; 6, determining an inlet measurement point and an outlet measurement point of the wind tunnel test section; 7: reliably communicating the measuring points with a measuring instrument through a connecting pipeline; 8: testing the turbine output power at different pitch angles when the initial wind speed is tested, and calculating and obtaining the turbine efficiency; 9, testing the turbine output power and the turbine efficiency at the initial pitch angleat different wind speeds; 10: testing the turbine output power and the turbine efficiency at different blade pitch angles at different wind speeds. The field flow internal field treatment is realized, and the capability of researching the power performance of the ram air turbine by utilizing a wind tunnel test is improved.

The invention relates to a device for horizontal measuring and guiding to level an airplane. The device comprises a microprocessor, a biaxial horizontal sensor, a fulcrum identification circuit, a data input device, a display and a voice broadcasting device, wherein output ends of the biaxial horizontal sensor, the fulcrum identification circuit and the data input device are connected with the microprocessor; an output end of the microprocessor is connected with input ends of the display and the voice broadcasting device. Therefore, compared with a traditional device for leveling the airplane, the device adopted for leveling can reduce the number of required tool devices, reduces labor, is simple and easy to operate, and meanwhile, solves the problems that during the airplane leveling process, human errors, complexity and airplane leveling errors are unstable, and the labor cost is relatively high, is small in errors, high in precision, simple in structure, very small in investment and convenient, and fills in the gap in the domestic technical field.

The invention relates to laser pattern projection device and method. It includes SCM controlled laser, scanning tilting mirror, and many parallel lasers. The method includes the following steps: using visual persistence effect to emit the laser from the parallel lasers to the scanning tilting mirror; projecting on the screen after reflecting; using SCM to control emitted laser bright-dark to form static or animate pattern or character. The invention has the advantages of compact structure, simple technology, high display contrast, realizing outdoor long distance projection by night, projecting out laser scroll with animate character or pattern, widely using in indoor outdoor occasions such as exhibition etc.

The invention discloses a field mobile illumination trolley which comprises a trolley base, a trolley body vertical rod, a handheld dragging rod, at least one lamp, at least two wheels, cables used for providing illumination sources and at least one pull rod used for adjusting the angle of the lamps and can stretch out and draw back vertically. The wheels are mounted on the lower portion of the trolley base and used for guaranteeing free and stable moving of the field mobile illumination trolley. A supporting frame is arranged at the top end of the trolley body vertical rod, each lamp is in pivot joint with the supporting frame, and the bottom end of the trolley body vertical rod is fixedly connected to the center of the trolley base. The handheld dragging rod is connected to the trolley base in an inserted mode and used for pushing and moving the field mobile illumination trolley. One ends of the cables are inserted in the lamps, and the other ends of the cables are connected with an external power supply. One end of each pull rod is fixedly connected to the trolley base, and the other end of each pull rod is connected with the corresponding lamp. The field mobile illumination trolley is easy and convenient to manufacture, low in cost and high in practicability.

The invention discloses a method for dividing replaceable units in the field considering development and maintenance. ; Step 3: Solve the optimization target model; Step 4: According to the solution results in Step 3, determine the repair level and repair method of each component in the equipment as the field replaceable unit. The present invention considers the influence of the development stage on the division of the field replaceable units, and comprehensively considers the cost of each part of the equipment from the development to the use and maintenance phase, so that the division is more suitable for the actual situation and more scientific and reasonable. At the same time, the main maintenance tasks at the basic level of the product are clarified by dividing, so that the equipment can be maintained and repaired in time, thereby ensuring the long-term performance of the equipment.

The invention belongs to an outfield maintenance technology of an aero-engine, and relates to an installation platform for an outfield motor of the aero-engine. The installation platform is characterized in that the installation platform consists of a base (1), a two-dimensional linear movement mechanism (2) and a universal rotating mechanism, wherein the universal rotating mechanism consists of a lower locking ring (3), a joint bearing, an upper shaft (6), a mounting plate locking component (7), a bracket (8), a mounting plate (9), an upper locking ring (10), a long bolt (12), a bearing seat (13), a lower locking ring fastening screw (14), a lower shaft (15), a bearing seat fixing screw (16) and an upper locking ring fastening screw (17). After the installation platform for the outfield motor of the aero-engine is adopted, the labor intensity is greatly lightened, the working efficiency is improved, and industrial accidents can be avoided.