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Ground-effect vehicle capable of shallow diving

A ground-effect aircraft and aircraft technology, applied to aircraft, seaplanes, convertible vehicles, etc., can solve problems such as pump flow, complex dynamic characteristics, difficult research results, and complex structures

Inactive Publication Date: 2009-01-07
赵明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, I think the structure is too complicated, and a series of design and manufacturing problems brought about by the three "minor top clearances" and "gear undercutting", as well as pump flow and dynamic characteristics are too complicated. Finally, research The results are difficult to be accepted by the production enterprises

Method used

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  • Ground-effect vehicle capable of shallow diving
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  • Ground-effect vehicle capable of shallow diving

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Embodiment Construction

[0033] 5.1 Assume that the underwater displacement of the aircraft is 40 tons, the driving power provided by the water pump is 170 horsepower, and the maximum underwater speed is 25 knots, which is equivalent to V=25×1.852=46.25km / h=12.815m / s. In order to overcome the underwater resistance during shallow diving, according to Newton's third law, the thrust is equal to the resistance and advances at a constant speed. The thrust of the water is: F=75N / V=75×170 / 12.85=992.2kgf=0.992 tons≈1 ton force. Obtain thrust-to-weight ratio γ=1 / 40 for diving voyage, and γ=1 / 4 for fighter jet cruising, both belong to different technical fields, and the natural thrust-weight ratio of submersible is lower, and the difference between the two is as much as 10 times.

[0034] 5.2 This pump is a gear pump. The commonly used working pressure in engineering is P=12~20Mpa, which is used for oil. Now the water pressure is lower, so take P=7.5Mpa=75kgf / cm 2 . The total efficiency of the gear pump is y =...

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Abstract

The invention provides a ground-effect vehicle capable of shallowly diving, which can dive shallowly to hide water-jet propulsion and rise over the sea surface to increase jet propulsion, changes hydrofoils into airfoils, generates ground effect, flies over sea or very closely to the ground, and lands in a jet traveling manner. A multistage double circular-arc gear high pressure large capacity pump or multistage internal serial connection dual-charging double circular-arc gear pump is taken as the hydraulic propeller pump during the shallow diving process and the jet propeller pump during the process of flying over the sea. A water pump is used for water inlet submergence and water drainage to a ballast water tank besides water jet; when jet flow is performed at the tail part, and one side is shut off, namely, steering is realized; when flying over the sea, the ground-effect vehicle is still closely stuck to the sea surface for water-jet propulsion. The jet propeller pump can be used for jet propulsion at the tail part and jet hovering at the bottom part through a valve, and the jet at the tail part is turned, so that the purpose of changing the heading can be achieved. The ground-effect vehicle has four navigation conditions: main water-jet shallow diving; main water-jet and jet flying over the sea; minor jet flying near the ground; and minor jet traveling wheel landing, and the ground-effect vehicle is manufactured by manly adopting a novel light material, for example, the fiber reinforced composite material (FRP).

Description

1. Technical field [0001] The invention relates to providing a "multi-stage double-arc gear high-pressure large-flow pump" as a "ground-effect aircraft capable of shallow diving", which is a "water jet propulsion pump" during shallow diving, and when jumping out of the water and flying It is a "jet propulsion pump", which is an aircraft structure that uses the ground effect to fly at high speed. 2. Background technology [0002] 2.1 Advantages of Ground Effect Aircraft [0003] When a vehicle is flying close to the surface of the water or just a few meters above the ground, its aerodynamic characteristics are different from those flying at high altitudes such as airplanes. When the aircraft is flying, the airflow that moves oppositely relative to the aircraft is divided into upper and lower parts by the wings of the aircraft. Because the aircraft is close to the water surface or very close to the ground, the movement of air flowing through the wings is blocked, thus increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C35/00B60F5/00
Inventor 赵明
Owner 赵明
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