HTPA AS AN ALTERNATIVE ROCKET PROPELLANT BINDER FOR THE NATO EVOLVED SEA SPARROW MISSILE (ESSM)
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Authors
Noukas, Christos
Subjects
Evolved Sea Sparrow Missile
ESSM
Hydroxyl-Terminated Polyether
HTPE
Hydroxyl-Terminated Polyacetylene
HTPA
solid propellant
binder
insensitive materials
IM
ESSM
Hydroxyl-Terminated Polyether
HTPE
Hydroxyl-Terminated Polyacetylene
HTPA
solid propellant
binder
insensitive materials
IM
Advisors
Hooper, Joseph P.
Date of Issue
2022-12
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Solid propellants are used mainly in military missiles because they provide sufficient high thrust and resist accidental detonation, especially during storage. The latest version, the NATO Evolved Sea Sparrow Missile (ESSM), uses Hydroxyl-Terminated Polyether (HTPE) as a solid propellant binder. This thesis examines an entirely different acetal-based polyurethane propellant binder, Hydroxyl-Terminated Polyacetylene (HTPA), which has been patented since the 1960s but has not been used. In addition, the literature on HTPA is scarce. For this reason, in this thesis, HTPA was synthesized and compared with different HTPE samples to conclude if it can replace the current ESSM binder in the future. The synthesis of HTPA derived from the chemical compound of Butynediol with Paraformaldehyde was achieved with a reasonably satisfactory reaction yield. Moreover, the mechanical test results revealed that the HTPA polymer with Hydrogenated MDI (HMDI) as a curative exhibited the lowest deformation rate of all other polymers. Thus, the polymer HTPA with HMDI as a curing agent seems to perform better mechanical properties than HTPE. Finally, mechanical properties analysis showed that the HTPA-based polymers present much higher stress values than HTPE. Therefore, it appears that HTPA polymers behave more strongly and stiffly than their HTPE counterparts, a prerequisite for further research into acetal-based binders as a potential substitute for polyether-based polyurethane binders.
Type
Thesis
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Department
Physics (PH)
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Approved for public release. Distribution is unlimited.
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