Accession Number:

ADA172415

Title:

A Hot Gas Source for Convective Ignition Studies of Energetic Materials.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• DeWilde,Mark A.

Report Date:

1986-08-01

Pagination or Media Count:

24.0

Abstract:

In order to understand the ignition of propellant grains in a charge within a gun, it is desirable to study how the evolved hot gases that permeate the bed and flow over the individual grains cause ignition of those grains. The temperature of these gases range from ambient , to the adiabatic flame temperatures characteristic of the propellant in use. The composition of the gases ranges from that of air, to mixtures of partial combustion products with air. The flows may be either laminar or turbulent. The difficulties of designing an apparatus to simulate all such conditions, led to the chosen regime, that of the early stages of bed ignition. In these stages, temperatures range from ambient to approximately 1000 c, flows are laminar, or just starting to break up into turbulence, and the gases are essentially air, or oxygen depleted air. This report describes a novel hot gas source that possesses the capability of producing a continuous laminar flow of hot gas at temperatures from ambient to 900 C. Details of construction are given and a short description of intended application is provided. Keywords Furnaces.

Descriptors:

• *IGNITION
• *HOT GASES
• *LAMINAR FLOW
• DEPLETION
• AIR
• MATERIALS
• GASES
• OXYGEN
• ENERGETIC PROPERTIES
• FURNACES
• COMBUSTION PRODUCTS

Subject Categories:

• Ammunition and Explosives
• Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE