JPH0141825B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the improvement of a flying object, and more specifically, it proposes a flying object in which a propulsion engine using solid fuel is configured to always operate at a specific temperature state. be.

First, a conventional flying object will be explained using FIG. In Fig. 1, 1 is a flying body, and 2 is a propulsion engine using solid fuel. Since a conventional flying object is configured as shown in Figure 1, the propulsion engine 2 of the flying object 1 is directly affected by the ambient temperature and must operate at a temperature equivalent to the surrounding environment. .

However, propulsion engines using solid fuel are
The thrust varies greatly depending on the temperature of the solid fuel.
That is, when the solid fuel in the propulsion engine is in a low temperature state, the thrust is small, and when it is in a high temperature state, the thrust is large, so the speed of the flying object changes accordingly. Furthermore, if the temperature of the solid fuel exceeds a certain temperature, there is a risk that abnormalities such as non-ignition may occur if the temperature is too low, or explosion if the temperature is too high.

For this reason, in the case of propulsion engines that use solid fuel, it is necessary to select raw materials that have low temperature sensitivity, and there is also the disadvantage that the flying object cannot be used outside of a specific temperature range. .

The present invention aims to improve these conventional drawbacks, and will be described in detail below.

Figure 2 shows an embodiment of the present invention, in which 1 is a flying body, 2 is a propulsion engine using solid fuel, 3 is a heat conversion medium stored in a tank, and 4 is a heat conversion medium. 3 is a valve that controls the flow rate; 5 is a heat converter that heats or cools the propulsion engine 2 with the heat conversion medium 3; 6 is a heater that heats the heat conversion medium 3 stored in the tank; 7 is the heat stored in the tank. A cooler that cools the conversion medium 3, 8a a detector A that detects the ambient environment temperature, 8b a detector B that detects the temperature of the heat conversion medium 3 stored in a tank, and 8c a detector that detects the temperature of the propulsion engine. Detector C, 9 is detector A, B, C8a, 8b, 8
This is a control device that controls the heater 6, cooler 7, and valve 4 based on the temperature detected by c.

In such a configuration, when the flying object 1 is placed under a low temperature, if the temperature of the propulsion engine 2 of the flying object 1 falls, the control device 9 will be activated based on the temperature of the propulsion engine 2 detected by the detector C8c. is valve 4
By controlling this, an appropriate amount of heat conversion medium 3 is sent to the heat converter 5 to raise the temperature of the propulsion engine 3, and maintain the propulsion engine 3 within a specific temperature range. At this time, the control device 9 controls the heater 6 to heat the heat conversion medium 3 based on the ambient environment temperature obtained by the detector A8a, but obtains the temperature of the heat conversion medium 3 by the detector B8b and cools it appropriately. The device 7 is also controlled to maintain the heat conversion medium 3 at a specific temperature.

Because it is configured like this, the flying body 1
The propulsion engine 2 of can be maintained at a specific temperature, so
It becomes possible to stabilize the thrust and suppress abnormal combustion, and it also becomes possible to widen the selection of raw materials for solid fuel, and furthermore, it becomes possible to widen the operating temperature range of the flying body.

The specific temperature mentioned here is a temperature appropriately selected from the operating temperature range specified in the standards for propulsion engines using each solid fuel, and the heat conversion medium may be a liquid such as oil, an inert gas, etc. Gas is the main type, but electricity may also be used if sufficient safety measures are taken, and there is no particular requirement as long as the propulsion engine is suitable for heating and cooling. Also,
In the example, all the components for raising the temperature of the propulsion engine to a specific temperature were built into the flying body, but with the exception of detector C, part or all of each component was mounted on the tower. However, the arrangement of the components is not limited.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an example of the configuration of a conventional flying object, and FIG. 2 is a schematic configuration diagram showing a configuration example of a flying object according to the present invention. In the figure, 1 is a flying body, 2 is a propulsion engine, 3 is a heat conversion medium, 4 is a valve, 5 is a heat converter, 6 is a heater, 7 is a cooler, 8
a is a detector A, 8b is a detector B, 8c is a detector C, and 9 is a control device. In the drawings, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Claims] 1. A heat converter that heats and cools a propulsion engine that provides propulsion to a flying object using solid fuel, a valve that controls the flow rate of a heat conversion medium given to the heat converter, and a heat conversion medium that heats the heat conversion medium. a heater,
a cooler for cooling the heat conversion medium and the above valve;
A configuration configured to operate the propulsion engine of the flying object at a specific temperature by using a control device that controls the heater and the cooler, and each detector that detects the ambient environment temperature, the heat conversion medium temperature, and the propulsion engine temperature. A flying body that is characterized by