𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Propellant combustion at low pressures

✍ Scribed by H.F.R. Schöyer; P.A.O.G. Korting

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
504 KB
Volume
63
Category
Article
ISSN
0010-2180

No coin nor oath required. For personal study only.

✦ Synopsis

The combustion characteristics of a family of composite propellants have been investigated at low (i.e., subatmospheric) pressures and three different temperatures. Although a de Vieille-type burning rate law appeared to be applicable, the burning rate exponent and coefficient vary strongly with the initial temperatures. Indications are that this is primarily due to the presence of nitroguanidine and oxalate. Combustion efficiency proved to be poor. At low pressures, all propellants are susceptible to irregular burning; above 50 kPa oscillatory combustion was hardly observed. All propellants exhibit distinct preferred frequencies for oscillatory combustion.

These frequencies, being much lower than the acoustic frequency of the test system, are associated with the combustion characteristics of the propellants. They depend strongly on the combustion pressure and the initial propellant temperature.

📜 SIMILAR VOLUMES

Ignition of composite solid propellant a
Ignition of composite solid propellant at subatmospheric pressures
✍ Michiko Harayama; Takeo Saito; Akira Iwama 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 538 KB

The ignition of composite solid propellants by CO 2 laser irradiation at low pressures has been investigated experimentally. Three ignition modes are found at subalJnospheric pressures: self-sustaining ignition, non-self-sustaining ignition, and pulsating ignition. Here, the self-sustaining and the

Evaporation at low pressures
Evaporation at low pressures
✍ Burrows, G. 📂 Article 📅 2007 🏛 Wiley (John Wiley & Sons) ⚖ 824 KB

## Abstract The well‐known equations, based on simple kinetic theory, that represent evaporation at low pressures, are examined, and it is concluded that they apply only in certain limiting circumstances. The process of evaporation at low pressures is discussed and some semi‐empirical equations, ba

The low pressure, combustion gas plasma
The low pressure, combustion gas plasma
✍ T.H. Dimmock; W.R. Kineyko 📂 Article 📅 1963 🏛 Elsevier Science 🌐 English ⚖ 851 KB

Studies of the electrical properties of seeded, high-temperature, low-pressure flames have been made to determine the influence of electric and magnetic fields on plasma properties and to evaluate plasma diagnostic techniques. The investigation was carried out at pressures from 20 to 100 mm of mercu

Mass transfer at low pressures
Mass transfer at low pressures
✍ Thomas K. Sherwood; Norman E. Cooke 📂 Article 📅 1957 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 766 KB

Data are reported for the evaporation of spheres of naphthalene into air, helium, carbon gators have reported values of increasing dioxide, and Freon-12, and of liquid diethyl adipate into air at pressures from 0.1 to 3,OOOfi in successive tests as continuing efforts Hg and at Reynolds numbers from

Oxides of nitrogen in combustion: Oscill
Oxides of nitrogen in combustion: Oscillatory combustion at elevated pressure
✍ R.C. Seagrave; H.H. Reamer; B.H. Sage 📂 Article 📅 1965 🏛 Elsevier Science 🌐 English ⚖ 779 KB

Measurements of the local perturbations of pressure were made during the oscillatory combustion of mixtures of air and natural gas at elevated pressure under macroscopically steady conditions. The results indicate a complicated effect of the interrelation of mixture ratio and weight rate o/ #ow upon