Accession Number:

ADA526728

Title:

Benefit of Constant Momentum Propulsion for Large Delta V Missions -- Applications in Laser Propulsion

Descriptive Note:

Conference paper

Corporate Author:

AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE

Report Date:

2004-01-01

Pagination or Media Count:

11.0

Abstract:

The authors show that perfect propulsion requires a constant momentum mission as a consequence of Newtons second law. Perfect propulsion occurs when the velocity of the propelled mass in the inertial frame of reference matches the velocity of the propellant jet in the rocket frame of reference. They compare constant momentum propulsion to constant specific impulse propulsion, which, for a given specification of the mission Delta V, has an optimum specific impulse that maximizes the propelled mass per unit jet kinetic energy investment. They also describe findings of more than 50 efficiency for conversion of laser energy into jet kinetic energy by ablation of solids.

Subject Categories:

  • Lasers and Masers
  • Rocket Engines
  • Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE