空气阻力系数

汽车空气阻力系数的二次滑行测量法

The Two-Stage Coastdown Testing Method to Measure the Automobile Air Drag Coefficient

汽车迎风面积是指汽车在行驶方向的投影面积，汽车迎风面积是求汽车空气阻力系数的必需参数。

Automotive frontal area is projected area of automobile driving direction , which is necessary parameter of measuring automotive air drag coefficient .

汽车空气阻力系数CD值的测试

Testing on the C D Value of Automobile Air Resistance Coefficient

浅谈摩托车空气阻力系数CD值的简易确定方法

Simple Defining Method for Air Resistance Coefficient C_D of Motorcycles

海面空气阻力系数CD计算方法的研究

A study of the computing methods for the drag coefficient c_d in air over sea

滚动阻力系数；空气阻力系数；滑行试验；

Rolling resistance coefficient ; Air resistance coefficient ; Coasting test ;

功率平衡法测试汽车的空气阻力系数

Determination of air resistance coefficient of automobile by power balanced method

汽车空气阻力系数的数值模拟及研究

Numerical Simulation and Study of Aerodynamic Drag Coefficient of Automobile

降低载货汽车空气阻力系数对等速燃耗的影响

Effect of reducing aerodynamic drag coefficient on constant-speed fuel economy of truck

用滑行试验法测定汽车空气阻力系数研究

Measuring Automotive Air Resistance Coefficient by Coasting Test Method

基于道路试验的汽车滚动阻力和空气阻力系数计算方法研究

Calculation of Rolling Resistance Coefficient and Air Resistance Coefficient Based on Road Test

摩托车空气阻力系数的测试

Testing on the Air Resistance Coefficient of Motorcycles

通过对试验结果的分析与比较，证明了二次滑行法可有效地提高空气阻力系数测量的精度，误差范围控制在5%左右；

The results of the two_stage coastdown tests of the vehicle are analysed and compared .

结果表明：内部声激励能够明显地降低车身模型的空气阻力系数。

It is shown that the technique can obviously reduce the aerodynamic drag coefficient of the model .

试验数据分析结果表明，不同客车前部造型对气动力影响非常显著，如通过改善造型可使空气阻力系数由0.7509降为0.5759。

The analysis of aerodynamic force data shows that differ front shape is very important to aerodynamic force .

介绍了大口径机枪双头弹空气阻力系数的2种实验方法和实验结果。

The experimental methods of drag coefficients of large calibre machine gun duplex ammunition are introduced and the results are given .

本文利用内部声激励技术，在风洞中对某厢式客车车身模型进行空气阻力系数的测试。

The aerodynamic drag coefficient of a bus body model is measured in the wind tunnel with the acoustic excitation technique applied .

摩托车的空气阻力系数是整车设计中至关重要的参数，对整车的动力性和经济性影响很大。

The air resistance coefficient is the key to the design of motorcycle , which greatly affects the dynamic characteristic and fuel economy of the motorcycles .

基于实车道路滑行试验数据，采用两段滑行试验法计算汽车的滚动阻力系数和空气阻力系数。

Based on the vehicle coast-down test data , the rolling resistance coefficient and air resistance coefficient were calculated by using the two-stage coast-down test method .

第三，进行实车滑行试验，获取车辆空气阻力系数、滚动阻力系数以及发动机制动力矩信息。

Thirdly , taking the real vehicle coasting test , the vehicle air-drag coefficient , rolling resistance coefficient and the engine braking torque can be obtained .

在风洞中，对某型大客车的缩尺模型，进行有、无声激励情况下空气阻力系数测试的对比试验。

For a scaled model of the bus , the contrast experiments of aerodynamic drag coefficient of acoustic excitation with that of no acoustic excitation in the wind tunnel were carried out .

通过对绒毛平动的分析，绒毛的运动速度与绒毛的带电量、空气阻力系数及电场强度有关。

According to the translation of flock , the lifting speed of flock was related to the electrical field intensity , the coefficient of air resistance and the electrical quantity of flock .

本文还研究了燃料电池的转换效率、车辆总质量、空气阻力系数、滚动阻力系数对车辆能量经济性的影响程度。

This article has also studied the vehicles energy efficient influence , which include the fuel cell transfer efficiency , the vehicles lumpy mass , the air resistance coefficient , the rolling resistance coefficient .

行车间距的增加将有利于提高隧道内汽车有效空气阻力系数的大小。对两螺旋曲线隧道射流风机的优化布置采用了三维数值计算和现场实测相结合。

A longer traffic space would improve the effective drag coefficient of traffics . A three dimensional numerical analysis and field measurement were used to study the optimal location of jet fans in the two curved tunnel .

分析了其参数灵敏度，各参数对汽车燃油经济性的影响以传动系的机械效率和汽车的总质量最为显著，滚动阻力系数、空气阻力系数与迎风面积的影响则小一些。

Automobile fuel economy was influenced by a variety of parameters and the mechanical efficiency and total quality of automobile are obvious ones . The rolling resistance coefficient , air resistance coefficient and frontal area have less influence .

在所分析的车辆参数中，动力系统效率的提高对车辆能量经济性的改善最为有效，其次是车的总质量、空气阻力系数和滚动阻力系数减小的影响。

The results show that among the analyzed parameters , the increase of transmission efficiency of the powertrain improves the vehicle energy economy most . The decreases of gross vehicle mass , aerodynamic drag coefficient and roll resistance coefficient are the next .

文章对试验结果进行了初步的分析比较，提出了水面船舶空气迎面阻力系数的取值范围及法向力作用点前后位置的近似计算公式，供读者参考。

The authors recommend the selected values of the air drag coefficient of ships , in addition to the approximate formula for the longitudinal positions of the action point of the normal force .

当悬挂试验弹吹风产生时，压力传感器输出电压将变化，通过阻力与压力转换关系可得出试验弹的空气阻力，并计算出空气阻力系数。

When blowing wind toward Hanging test shell , output voltage of pressure sensor can change , the air resistance of test shell can be obtained by changing relation of air resistance and pressure , air resistance coefficient can be also calculated .