Research of Wing-in-Ground Effect Craft by Radio Control Models

利用鸟取大学的TN-1、TN-2、TN-3模型和名古屋大学的NT-1、NT-2、NT-3模型，进行了地效飞行器无线电控制模型的飞行试验。NT-1是一种普通的飞行艇。它的机翼是一个改进的利皮施机翼，其前缘被切掉，以引入安装在机头前方的两个螺旋桨的滑流，并由两个电动机驱动。这两种模型表明，它们适合于高速高效的船舶。从那时起，鸟取大学的研究工作重点放在了低速小型飞船的开发上。另一方面，在名古屋大学，继续努力开发一种高效率的工艺。TN-2有冲压翼，可以实现低翼载，适合低速飞行器。NT-2联队 ...更多信息 是直线的，而不是一个Lippisch机翼，以最大限度地提高功率增升（PAR）的效果。TN-2的性能令人满意，但有上仰的趋势。为了控制上仰，设计并建造了TN-3。NT- 2的两个电动机对于其模型尺寸来说不够强大。MNT-3是一种新型燃气发动机。最后两个模型在水面上实现了恒定的低空飞行。在这个研究项目中，鸟取大学的研究人员有机会为另一个地效飞行器载人模型项目提供建议。一个1座和一个2座的开发成功。他们正在努力开发一种生产模式。与此同时，名古屋大学的研究人员还建议进行PAR-WIG载人模型的项目。这种模式成功地实现了连续跳跃。从这些结果中我们发现，俯仰稳定性是地效飞机实用化的一个重要问题。我们将利用数值模拟来研究这个问题。少

Flying tests of radio controlled models of Wing-in-Ground Effect (WIG) craft were conducted using 3 models of TN-1,2 and -3 at Tottori University, and other 3 models of NT-1,2 and MNT-3 at Nagoya University.TN-1 had a Lippisch wing with a canard, which deflrct slip stream of a propeller mounted in front of its nose and drived by a gas engine. NT-1 had an ordinary flying-boat type. Its wing was a modified Lippisch wing, whose leading edges were cut out to introduce slip streams of two propellers mounted in front of its nose and drived by two electric motors. These two types of models revealed that they were suitable for a high speed and high efficiency craft. From this time, weight of research effort was put on the development of a low speed and small craft at Tottori University. On the other hand, at Nagoya University, effort was continued to develop a high efficiency craft. TN-2 had a ram wing, which could achieve a low wing loading and was suitable for a low speed craft. Wing of NT-2 … More was rectilinear instead of a Lippisch wing to maximize the effect of power augmented lift (PAR). TN-2 had satisfactory performance except the tendency of pitch up. To control pitch up, TN-3 was designed and constructed. Two electric motors of NT- 2 were not enough powerful for its model size. A new model MNT-3 was designed with a gas engine. These last two models achieved constant low altitude flight above water surface.During this research project, investigators in Tottori University had a chance to advice another project of manned model of WIG. A 1-seater and a 2-seater were developed in success. They are now making effort to develop a production model. At the same time, investigators in Nagoya University also advised a project of a manned model of PAR-WIG. This model succeeded to a continuous jump. They obtained many valuable data of PAR-WIG development.From these results, we find out that one of important problem is pitching stability for the practical use of WIG. We will study the problem by making use of numerical simulation. Less