Accession Number:

AD0652684

Title:

THE HIGH-G LINEAR ACCELERATOR, A FEASIBILITY STUDY

Descriptive Note:

Final rept.

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s):

Report Date:

1966-04-01

Pagination or Media Count:

129.0

Abstract:

Inertial guidance systems for tactical missiles must perform during the boost period when, for less than one second, the entire missile is accelerated at very high rates. It is desirable to propel the guidance system on a test vehicle which can be accelerated in a horizontal straight line for a few tenths of a second at up to 200 g, whose motion can be carefully controlled, and which can be brought to a stop after the test. Therefore, the feasibility of various propulsion methods was studied and a comparison made of vehicles driven by linear electric motors, compressed gas, and rockets. This study indicates that the highest probability of success lies with a combination pneumatic and constant frequency linear induction motor drive. The installation would consist of a pneumatic piston which accelerates the test vehicle to about 200 ftsec, after which the induction motor drive takes over. The electrical system comprises a three-phase alternator rated at about 280 megawatts for short-time operation, a linear stator along which the test vehicle moves, and a power control circuit which selectively feeds power from the alternator to the stator. Beryllium fins on the vehicle make up the translator of the linear motor. A Doppler-radar control system provides feedback control. Deceleration is by dc coils in the stator. It is estimated that the entire unit can be designed and built in about four to five years at a cost of about 15 million. Alternate systems which show promise are based on variable frequency ac and on hybrid fuel rockets. Either or both of these alternate systems may be less costly than the constant frequency systems, but both require more research and development effort and are less assured of success.

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE