A new method to determine fuel detonability has been proposed, which is based on measuring the length and time of a deflagration-to-detonation transition (DDT) in a calibration pulsed-detonation wind tunnel (CPDWT). The fuel was polypropylene granules (PG). A test stand was designed and built, which included the CPDWT and a gas generator to obtain PG pyrolysis products (PGPP) at a decomposition temperature to 800°C. Experiments for studying DDT in PGPP–air mixtures were carried out. It was shown that the detonability of PGPP is close to that of a stoichiometric mixture of autogas liquefied petroleum gas with air under normal conditions.

中文翻译：

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聚丙烯热解产品的空气混合物中的爆燃到爆轰转变

提出了一种确定燃料爆震性的新方法，该方法基于测量校准脉冲爆震风洞 (CPDWT) 中爆燃到爆震转变 (DDT) 的长度和时间。燃料是聚丙烯颗粒（PG）。设计并建造了一个试验台，其中包括 CPDWT 和气体发生器，以在分解温度至 800°C 下获得 PG 热解产物 (PGPP)。进行了研究 PGPP-空气混合物中 DDT 的实验。结果表明，在正常条件下，PGPP 的爆炸性接近于汽车液化石油气与空气的化学计量混合物的爆炸性。