Launch type parachute dynamic test device

Abstract

The invention discloses a launch type parachute dynamic test device which comprises a gun body system, a test bomb system and a pressing disc system. The gun body system comprises a gun bore, an air bore and a locking mechanism; the test bomb system comprises a bomb cylinder, the head of the bomb cylinder is provided with an instrument cabin, the tail of the bomb cylinder is provided with an opening, a tested parachute pack containing a tested parachute is arranged in the bomb cylinder, and the tested parachute is connected to the instrument cabin; the pressing disc system comprises a pressingdisc which blocks the tail of the bomb cylinder and separates the air bore from the gun bore in a sealed mode; a pilot parachute is arranged on the air bore side of the pressing disc, a pressing discrecovery parachute pack provided with a pressing disc recovery parachute and a braking parachute is arranged on the gun bore side of the pressing disc; the pilot parachute is used for guiding the test bomb system and the pressing disc system to be straightened; and the pressing disc recovery parachute is used for recovering the pressing disc system, and the braking parachute is used for decelerating and synchronizing the pressing disc system and the test bomb system after the pressing disc system and the test bomb system are separated in the air and recovering the tested parachute pack. According to the invention, actual parachute opening conditions and limit parachute opening speeds of various parachutes can be simulated, the test cost is low, the test efficiency is high, and the effective test data acquisition rate is high.

Description

technical field [0001] The invention belongs to the technical field of parachute testing, and in particular relates to a launching type parachute dynamic testing device. Background technique [0002] At present, the parachute dynamic deployment test (with parachute opening speed and parachute opening height) is realized by launching the aircraft. After the aircraft flies to the predetermined altitude and speed, the parachute-counterweight system to be tested is dropped from the aircraft (manually or automatically) , the parachute unfolds according to the designed working procedure and realizes the stabilization or deceleration function, and completes various performance tests of the parachute through the ground optical test and the test equipment equipped with the system. [0003] Although the aircraft airdrop test method can meet the comprehensive performance test and verification requirements of most parachutes, it also has many defects: a) limited by the inherent properti...

AI Technical Summary

Problems solved by technology

[0003] Although the aircraft airdrop test method can meet the comprehensive performance test and verification requirements of most parachutes, it also has many defects: a) limited by the inherent properties of the aircraft itself, the flight speed envelope cannot completely cover the speed envelope of all parachute operating conditions, In particular, parachute types such as lifesaving parachute, stabilizer parachute, and aerial bomb parachute with a relatively large speed envelope cannot complete the assessment of their boundary conditions; Airspace, meteorological conditions and other restrictions, the application process of the test aircraft is many, the test period is long, and the test efficiency is low; c) The aircraft airdrop test involves many tasks such as aircraft flight, landing site security, product recycling, etc. There are many test links involved, and the area wide, requires more test personnel, and high test cost; d) In the aircraft airdrop test, the attitude of the airdrop is affected by the aircraft wake field and is random and uncontrollable, which can easily lead to invalid parachute opening tests. At the same time, the random attitude of the airdrop also leads to the The test and ground optical test are difficult, and the effective test data acquisition rate is low; e) affected by the weather conditions during the airdrop, the landing point of the airdrop is difficult to determine, the recovery is difficult, and there is a risk of loss

[0004] It can be seen from the above that the existing parachute airdrop tests have problems such as the inability to complete the assessment of the parachute boundary velocity conditions, the high cost of the test, the long cycle, the low rate of test data acquisition, and the difficulty of recovery.

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