Abrégé

Dynamic ram accelerator operation permits operation with lower acceleration, permitting launch of acceleration sensitive payloads such as crewed vehicles. Operational cost is reduced, and reliability improved, by reducing or eliminating internal consumable parts. Relative motion between a projectile and propellant at entry to the ram accelerator enables initial ram combustion at relatively lower velocity. Valves may maintain separation between sections within the ram accelerator that contain different propellant compositions. Timing of valve opening and closing is coordinated to provide conditions suitable for ram combustion. Control over propagation speed of propellant within the system may be obtained using one or more of baffle shape, baffle spacing, propellant temperature, propellant pressure, propellant mixture, temperature of components such as baffles, and so forth. Before the projectile is launched, internal separators between sections are removed, providing an open path to the ram accelerator exit.

Classes IPC  ?

• B64G 1/14 - Navettes spatiales
• B64G 1/40 - Aménagements ou adaptations des systèmes de propulsion
• F41A 1/04 - Propulsion de projectiles utilisant la combustion d'une charge propulsive liquide ou gazeuse, p. ex. d'un hypergol
• F41F 1/00 - Appareils de lancement éjectant des projectiles à partir d'un tube, p. ex. canonsCanons lance-harpons
• F41A 1/00 - Propulsion de projectiles caractérisée par l'utilisation de charges propulsives combustibles ou explosives
• F02K 7/10 - Ensembles fonctionnels dans lesquels le fluide de travail est utilisé uniquement sous forme de jet, c.-à-d. ensembles ne comportant ni turbine ni autre moteur entraînant un compresseur ou une soufflante carénéeLeur commande caractérisés par une compression dans un diffuseur, c.-à-d. tubulures aéro-thermodynamiques ou statoréacteurs

Abrégé

Dynamic ram accelerator operation permits operation with lower acceleration, permitting launch of acceleration sensitive payloads such as crewed vehicles. Operational cost is reduced, and reliability improved, by reducing or eliminating internal consumable parts. Relative motion between a projectile and propellant at entry to the ram accelerator enables initial ram combustion at relatively lower velocity. Valves may maintain separation between sections within the ram accelerator that contain different propellant compositions. Timing of valve opening and closing is coordinated to provide conditions suitable for ram combustion. Control over propagation speed of propellant within the system may be obtained using one or more of baffle shape, baffle spacing, propellant temperature, propellant pressure, propellant mixture, temperature of components such as baffles, and so forth. Before the projectile is launched, internal separators between sections are removed, providing an open path to the ram accelerator exit.

Classes IPC  ?

• F41A 1/02 - Propulsion de projectiles en survitesse utilisant des moyens successifs pour augmenter la force propulsive, p. ex. utilisant la combustion de plusieurs charges propulsives, allumées l'une après l'autre et disposées le long du tube de l'armePropulsion multi-étages de projectiles
• F41A 21/28 - Chambres d'expansion des gazTubes d'arme ayant des orifices d'évacuation des gaz