Super-orbit speed flight technical scheme assisted by aerodynamic force

A technology of orbital speed and flight technology, applied in computer-aided design, special data processing applications, instruments, etc., can solve problems such as small aerodynamic force and thin atmosphere

Active Publication Date: 2019-10-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, since the flight altitude is limited to more than 70km, the corresponding atmosphere is very thin, and the...

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  • Super-orbit speed flight technical scheme assisted by aerodynamic force
  • Super-orbit speed flight technical scheme assisted by aerodynamic force
  • Super-orbit speed flight technical scheme assisted by aerodynamic force

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Embodiment Construction

[0048] In order to make the object, technical solution and effect of the present invention clearer and clearer, the following examples are given to further describe the present invention in detail. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0049] Step 1: Based on the high-lift-to-drag ratio aircraft, establish the force diagram and dynamic model of the aircraft when it flies at super-orbital speed. figure 1 It is a schematic diagram of the force of the aircraft when it flies at a super-orbital speed. Its characteristic is that the aerodynamic lift points to the center of the earth, as a supplement to the centripetal force, so that the aircraft can exceed the first cosmic speed without centrifugal motion (this is different from using the lift pointing upwards in the local area. The conventional flight plan to balance the gravity of the aircraft is different); ...

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Abstract

The invention discloses a super-orbit speed flight technical scheme assisted by aerodynamic force, and belongs to the technical field of aircraft design. According to the basic principle of the technical scheme, aerodynamic lift force pointing to the earth center and generated by the aircraft with the high lift-drag ratio serves as supplement of centripetal force, super-orbital speed flight is achieved without centrifugal motion, meanwhile, thrust is used for offsetting aerodynamic resistance, and continuous flight at the super-orbital speed is maintained. The method specifically comprises thefollowing steps: firstly, establishing a flight dynamics model of a super-orbital-velocity aircraft based on a high-lift-drag-ratio aircraft; secondly, based on equal-height and equal-speed assumptions, calculating a super-orbit flight speed which can be reached by the aircraft; then establishing a burnup calculation method of the super-orbital-velocity aircraft; and finally, solving orbit parameters of the optimal fuel consumption flight scheme by adopting an optimization method. The ultra-high-speed flight technology has important application potential in the fields of global fast arrival,spaceflight emergency rescue and the like.

Description

technical field [0001] The invention belongs to the technical field of aircraft design, and relates to a super-orbital speed flight scheme, in particular to a super-orbital speed flight technical scheme utilizing aerodynamic assistance. Background technique [0002] Near space is a new field opened up with the development of aerospace technology. It usually refers to the airspace at a height of 20-100km, which is between the highest flight altitude of an aircraft and the lowest flight altitude of a space orbiter. A brand-new combat field that can control the air, sea, and land. Near-space hypersonic vehicle technology has become the commanding height of aerospace technology, with immeasurable military application value and technological drive. In recent years, the world's military powers have vigorously studied a variety of hypersonic near-space vehicle technologies, such as hypersonic gliding vehicles, hypersonic cruise vehicles, and aerospace vehicles. These hypersonic v...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F2119/06G06F30/20Y02T90/00
Inventor 赵吉松张汉青龚柏春胥标李爽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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