CN103234518A

CN103234518A - Rocket parachute flame signal launching height testing method

Info

Publication number: CN103234518A
Application number: CN2013100982072A
Authority: CN
Inventors: 石瑞; 陈寅杰
Original assignee: Fishery Machinery and Instrument Research Institute of CAFS
Current assignee: Fishery Machinery and Instrument Research Institute of CAFS
Priority date: 2013-03-25
Filing date: 2013-03-25
Publication date: 2013-08-07
Anticipated expiration: 2033-03-25
Also published as: CN103234518B

Abstract

The present invention relates to a rocket parachute flame signal launching height testing method, which is characterized by comprising that: a launching point O is selected, an AO direction is adopted as X axis, a direction horizontally perpendicular to the X axis is adopted as Y axis, and two observation points A and B are arranged, wherein horizontal distances between the point O and the points A and B are M, a range of an angle AOB is 45-135 DEG, and an acute angle included angle formed by a BO direction and the Y axis is defined as theta; the plane AOB is adjusted to achieve a level state; a rocket parachute is launched, lifts, and flashes when achieving a high point C, wherein a point formed by perpendicularity of the high point C and the plane AOB is adopted as a perpendicularity point T, an angle TAC is set as beta, an angle TAO is defined as alpha1, and an angle TBO is defined as alpha2; angle measurement devices are arranged on the points A, B and O to measure angles theta, beta, alpha1, and alpha2; and a launching height value is calculated according to M, theta, beta, alpha1, and alpha2. With the present invention, field area requirements of rocket parachute flame signal launching height measurement are substantially reduced, and measurement operability is improved.

Description

A kind of method of testing of rocket parachute flare signal firing altitude

Technical field

The present invention relates to a kind of method of testing of rocket parachute flare signal firing altitude, belong to boats and ships life preserver technical field.

Background technology

The rocket parachute is life preserver important on the boats and ships, after being emitted to certain altitude in the air, can hang on sustained combustion certain hour under the parachute, and send the ruddiness with certain luminous intensity, and with slow speed landing, discharge distress signal.

This product has its relevant design parameter request, need carry out related experiment, measures the parameter of firing altitude, and then calculates the landing time, parameters such as sinking speed in conjunction with stopwatch.So the height measurement of rocket parachute flare signal is the most important thing in the whole test event.

Rocket parachute flare signal is in case of emergency, sends an SOS by dispensing flame smog, informs one of the life preserver of position of suing and labouring.It can be emitted to the high-altitude more than 300 meters, sends bright ruddiness, and in the night sky of visibility good, visibility reaches 12 nautical miles.The rocket parachute flare signal bullet is after emission, and by the high-altitude more than the rocket assist to 300 meter, subsidiary parachute is opened, and is used for keeping height, and its decline rate is not more than 5 meter per seconds; Signal flare sends bright ruddiness, and the sustained combustion time is greater than more than 40 seconds.The firing altitude value of signal flare has determined the rescuer to find the target azimuth in distance enough far away, is convenient to further take the rescue measure.

But, after the rocket parachute flare signal emission, can be subjected to windage aloft, when rising to peak, its vertical point has not been the position of emission, when the rocket parachute flare signal firing altitude is measured, does not generally consider the transversal displacement that it produces because of wind-force at present, therefore, measurement result is inaccurate.

Consider the influence of wind-force if desired, need to set up the high model of survey, the high model of the survey of prior art is referring to Fig. 1, choose broad place, in the venue, choose 2 points of the longer distance of being separated by, because GB GB4543-2008 has stipulated " rocket launching highly should not be lower than 300m ", because the total powerstation that the angle measurement degree is used and transit have a suitable elevation coverage, for the precision that guarantees to measure, general 2 distances are about 600m, by placing total powerstation and transit respectively at 2, at 2 mid points, namely rocket is placed at the arrow place among Fig. 1, test, calculate as all angles among the figure, finally calculate the firing altitude of rocket parachute flare signal.This method of testing needs a relatively large place, and width is more than at least 600 meters, and the actual measurement place is difficult to find so broad place, so this method of testing is too big to the land area requirement, is not easy to actual measurement.

Summary of the invention

The technical matters that actual needs of the present invention solves is: prior art is for the measurement of rocket parachute flare signal firing altitude, or do not consider that wind-force causes its lateral excursion, causes highly to measure inaccurately, or needs very big place, is difficult for realizing.

In order to solve the problems of the technologies described above, the present invention takes following technical scheme:

A kind of method of testing of rocket parachute flare signal firing altitude, described method of testing comprises:

Choose launching site O point, AO is to being made as X-axis, be made as Y-axis with X-axis horizontal vertical direction, be that the M place arranges two observation station A, B apart from O point horizontal range, the scope of ∠ AOB is between 45 ° to 135 °, and BO is to being defined as θ with the Y-axis angle, during ∠ AOB＞90 °, θ is for negative, and during ∠ AOB＜90 °, θ is for just; Adjustment face AOB level; Rocket parachute emission rising lofty perch C flash of light, the point of putting C vertical plane AOB from height is the some T that hangs down, and ∠ TAC is made as β, and ∠ TAO is defined as α ₁, ∠ TBO is defined as α ₂A, B, O point arrange angle measuring instrument and measure θ, β, α ₁, α ₂According to θ, β, α ₁, α ₂, M calculates the firing altitude value.

Further, described M=300m.

Further, use distance and the face of the adjustment AOB level of laser ranging function adjustment OA, the OB of total powerstation.

Further, use transit survey θ, β, α 1, α 2.

Further, described θ is chosen to be 0.

Characteristics of the present invention are: utilize and set a launching site O, two observation station A, B, adjust AOB face level, the use angle surveying instrument, for example transit is followed the trail of the emission track of rocket parachute flare bullet, know when signal flare is emitted to peak, send light, capture the light position, measure β, α among Fig. 3 ₁, α ₂Three angles in conjunction with the distance of OA, OB, calculate the Vertical Launch height of rocket parachute.

Beneficial effect of the present invention is:

1) the rocket parachute flare firing altitude is measured accurately, error is little.

2) measure the required area in place and be reduced to about 300m*300m from about 600m*600m, required area only is original 1/4th, greatly reduces site requirements, has improved the operability of measurement.

3) utilize existing instrument, set up rocket parachute rocket and survey high model, and extrapolate hypometric formula according to surveying high model, the final test that realizes for the Vertical Launch height, science, accurate, easy, quick.

Description of drawings

Fig. 1 is the method for testing synoptic diagram of prior art rocket parachute flare firing altitude.

Fig. 2 is that rocket parachute flare firing altitude method of testing of the present invention is to the synoptic diagram of launching site and observation station setting.

Fig. 3 is that rocket parachute flare firing altitude method of testing of the present invention is surveyed high structure of models synoptic diagram.

Embodiment

The present invention is further described below in conjunction with embodiment.

The measuring method of present embodiment adopts instrument to comprise: total powerstation, transit, foot rest, stopwatch, join the combination of equipment such as single prism centering bridge, anemoscope, intercom.

The personnel that measure need understand and survey high principle through training, the erection method of total powerstation, transit on top of, and the observation procedure of moving target, and carry out coordinated.

Prepare the emission foot rest of suitable rocket parachute flare signal bullet.The launching crew should be familiar with the using method of signal flare.

Referring to Fig. 2, before the emission, note the meteorological condition in place.Carry out that the place is chosen, launching site O, choose observation station A, B apart from each 300m of O point, set up 3-D walls and floor, OA first measures baseline, and OB second measures baseline, and AO is to being X axis, BO to and the Y-axis angle between 45 °-135 °.

The test site wind speed requires: adopt anemoscope, guarantee place surface wind grade at 5 grades and measure the excessive influence of avoiding wind-force that the rocket parachute flare signal bullet is launched below the wind.

Determining of test water plane: the O point rocket parachute flare signal bullet installation mid point on the flame signal flare emission corner bracket of getting fire, launching site O sets up total powerstation, demarcate 2 positions at A, B point by joining single prism centering bridge respectively, guarantee A, B point horizontal direction height unanimity, utilize the laser ranging function of total powerstation to adjust levelness, the antenna height of guaranteeing 3 of A, B, O is maintained at the same horizontal plane, it is XOY inspection surface level, as shown in Figure 2, the plane of vision of XOY is vertical with transmit direction OZ, forms cartesian coordinate system.

Regulating OA, OB distance is 300 meters, record 2 height value, and the angle of BO and Y-axis is defined as θ, and θ is between-45 °-45 °, and during ∠ AOB＞90 °, θ is for negative, and during ∠ AOB＜90 °, θ records the θ value for high computational for just.

Install and fix launcher in the O point, total powerstation, transit are installed in A point, B point.Utilize the laser ranging function calibrated horizontal height of total powerstation, diagonal eyepiece is installed before total powerstation, the transit survey is made things convenient for wide-angle observation, have little time owing to when signal flare is transmitted into peak, focus again, therefore total powerstation, transit eyepiece focal length being adjusted in advance 425 meters focuses on, be convenient to quick observation, the measurement preparation is carried out in other setting that regulates instrument.

Observation angle is measured and cooperative, and after the rocket parachute flare signal bullet launched, A, B point was selected the emission track of sighting device tracking signal bullet simultaneously for use.When signal flare began to send bright ruddiness, be the emission peak of rocket this moment, and suitably regulate eyepiece and observe, and the zenith distance of hourly observation and horizontal angle, the zenith distance that β=90 °-A is ordered, and horizontal angle is α ₁And α ₂

The calculating of height value: as shown in Figure 3, according to three groups of zenith distances, the horizontal angle of record, by formula:

Figure 2013100982072100002DEST_PATH_IMAGE001

Calculate height value, horizontal angle α ₁And α ₂Angle value is clockwise+, be counterclockwise-, wherein M is the distance of AO, BO, is 300m.

At last result of calculation is confirmed.

Claims

1. the method for testing of a rocket parachute flare signal firing altitude is characterized in that, described method of testing comprises:

A, choose launching site O point, AO is made as Y-axis to being made as X-axis with X-axis horizontal vertical direction, is that the M place arranges two observation station A, B apart from O point horizontal range, and the scope of ∠ AOB is between 45 ° to 135 °, and BO is to being defined as θ with Y-axis acute angle angle;

B, adjustment face AOB level;

C, rocket parachute emission rising lofty perch C flash of light, the point of putting C vertical plane AOB from height is the some T that hangs down, and ∠ TAC is made as β, and ∠ TAO is defined as α ₁, ∠ TBO is defined as α ₂

D, A, B, O point arrange angle measuring instrument and measure θ, β, α ₁, α ₂

E, according to M, θ, β, α ₁, α ₂, calculate the firing altitude value.

2. method of testing as claimed in claim 1 is characterized in that: described M=300m.

3. method of testing as claimed in claim 1 or 2 is characterized in that: distance and the face of the adjustment AOB level of using laser ranging function adjustment OA, the OB of total powerstation.

4. method of testing as claimed in claim 1 or 2 is characterized in that: use transit survey θ, β, α ₁, α ₂

5. method of testing as claimed in claim 1 or 2, it is characterized in that: described θ is chosen to be 0.