Gas-generating agent for use in ducted rocket engine

• US 4,925,909 A
• Filed: 10/10/1989
• Issued: 05/15/1990
• Est. Priority Date: 10/26/1988
• Status: Expired due to Term

• Current Assignee: Japan As Represented By Director General Technical Research and Development Institute Japan Defense Agency, Nippon Oil and Fats Co., Ltd. (NOF Corporation)
• Original Assignee: Japan As Represented By Director General Technical Research and Development Institute Japan Defense Agency, Nippon Oil and Fats Co., Ltd. (NOF Corporation)
• Inventors: Sonobe, Tadashi, Nakashita, Goro, Shimizu, Haruaki, Kubota, Naminosuke
• Primary Examiner(s): Miller, Edward A.
• Application Number:
  US07/418,558
• Time in Patent Office: 217 Days
• Field of Search: 252/183.11, 149/19.4, 149/19.6, 60/207, 552/11, 528/77, 528/78, 528/55, 528/58
• US Class Current: 528/55
• CPC Class Codes: C06B 45/10 the organic component containing a resin
• CPC Class Codes: C06D 5/00 Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets explosive compositions containing an oxidizer, fuels for rocket engines intended for reaction with an oxidant other than air C06B
• CPC Class Codes: C08G 18/5021 having nitrogen
• CPC Class Codes: C08G 65/24 Epihalohydrins
• CPC Class Codes: C08G 65/325 containing nitrogen

Abstract

A gas-generating agent for use in a ducted rocket engine essentially consists of an aliphatic polyester represented by the formula: ##STR1## or the formula: ##STR2## and a curing agent and optionally incorporating therein additives such as a curing catalyst.

Claims

1. A gas-generating agent for use in a ducted rocket engine, essentially consisting of one member selected from the group consisting of aliphatic polyethers represented by the formula:

##STR5## wherein n is in the range of 10 to 50 and m +l in the range of 1 to 10, and the general formula;

##STR6## wherein p, q, r, and z are each not less than 1 and p +q +r +z is in the range of 10 to 50, and a curing agent.

2. A gas-generating agent according to claim 1, wherein the content of said aliphatic polyether is in the range of 81 to 95% by weight.

3. A gas-generating agent according to claim 1, wherein the content of said curing agent is in the range of 5 to 19% by weight.

4. A gas-generating agent according to claim 1, wherein said curing agent is at least one polyisocyanate.

5. A gas-generating agent according to claim 4, wherein said polyisocyanate is hexamethylene diisocyanate.

6. A gas-generating agent according to claim 1, which further comprises at most 0.01% by weight of a curing catalyst.

7. A gas-generating agent according to claim 5, wherein said curing catalyst is at least one member selected from the group consisting of dibutyl tin dilaurate and triphenyl bismuth.