利用底盘测功机模拟道路滑行试验,测定出汽车的传动系阻力、轮胎滚动阻力及它们的速度影响系数。
A coasting performance test is simulated on a chassis dynamometer, the transmission resistance, rolling resistance of wheels and their speed factors are measured.
采用多车速滑行试验法和功率法对两段法计算结果进行验证,证明了采用两段滑行试验法计算汽车滚动阻力系数和空气阻力系数的正确性。
Then, multi-ample coasting-own data and power calculation method were applied to verifying the results. The results show that the two-stage coast-down test method is correct and feasible.
它被一架改建的波音747型飞机抬到高处而且仅用于进场滑行和着陆试验。
It was carried aloft by a converted Boeing 747 and used solely for glide-approach and landing tests.
试验结果表明,QH 4型汽车节能滑行器对各种车型、道路条件都具有显著的节油效果。
The testing results proved that the QH4 saving energy coasting device has a remarkable fuel-saving effect to any model of motor vehicles and at any road condition.
通过模型试验,对台阶式溢洪道滑行水流的时均压强特性进行了研究,探讨了台阶上时均压强的产生和变化规律。
The characteristics of time average pressure of skimming flow in stepped spillway are studied through experiments, and the law of occurrence and transformation are discussed.
对深V型滑行艇模型进行了静水横摇衰减实验和零速正横浪规则波中横摇运动实验,讨论了在处理试验数据时所面临的一些问题;
The roll decay test in still water and roll tests in regular waves at zero speed on model of a deep-Vee planing craft are conducted, and problems arising from the data processing are discussed.
在中国船舶科学研究中心拖曳水池中,通过滑行艇模型自航试验,研究了艇底气层对滑行艇推进性能的影响,结果表明:气层对采用水螺旋桨推进的滑行艇推进性能的影响不大。
The effect of bubbly layer on propulsion performance of planing craft is investigated by means of self-propelled model experiment in the towing tank of China Ship Scientific Research Center.
在中国船舶科学研究中心拖曳水池中,通过滑行艇模型自航试验,研究了艇底气层对滑行艇推进性能的影响,结果表明:气层对采用水螺旋桨推进的滑行艇推进性能的影响不大。
The effect of bubbly layer on propulsion performance of planing craft is investigated by means of self-propelled model experiment in the towing tank of China Ship Scientific Research Center.
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