AEROSPACE 410 AEROSPACE PROPULSION Lecture 10252002 RAMJET ANALYSIS

AEROSPACE 410 AEROSPACE PROPULSION Lecture (10/25/2002) RAMJET ANALYSIS IDEAL RAMJET AND ACTUAL RAMJET DESIGN Dr. Cengiz Camci

RAMJETS WITH SUBSONIC COMBUSTORS

Possible Ramjet configurations

IN ORDER FOR A RAMJET TO BE OPERATIONAL A FLIGHT SPEED OF AT LEAST SONIC VELOCITY IS REQUIRED Appr. 740 miles/hour

A MAJOR DRAWBACK OF A RAM JET IS ITS HIGH RATE FUEL CONSUMPTION A RAM JET UNIT CAN PRACTICALLY REACH MACH 5 (LOW HYPERSONIC) AERODYNAMIC FRICTION WILL MELT ANY RAMJET STRUCTURE DESIGNED FOR MACH=3 -4

RAM JET SYSTEM DEVELOPED BY MARQUARDT AIRCRAFT COMPANY BO-MARC PROGRAM BOEING & UNIV. OF MICHIGAN AERONAUTICAL RESEARCH CENTER LONG RANGE INTERCEPTOR

EARLY BOMARC SUPERSONIC RAM JET MACH = 2. 0 @ 48, 000 Feet 48 inch ramjet FINAL FLIGHT MACH = 2. 5 @ 42, 000 feet 31 miles

FUEL INJECTORS Solid propellant Is cast into the special cavity In the core of the engine

VIEW FROM RAMJET EXHAUST NOZZLE (FROM OUTSIDE) Throat of Supersonic nozzle SOLID PROPELLANT ROCKET ENGINE

MACH = 3. 95 @ 55, 000 FEET MACH = 2. 94 @ 95, 000 FEET RAMJET X-7 CONFIGURATION 2000 mph

BO-MARC RAMJETS START AT SONIC VELOCITY AT ABOUT 740 MILES/HOUR TAKE-OFF WITH A SOLID ROCKET BOOSTER

FIRST MODERN CRUISE MISSILE

BRITISH RAM-JET DEVELOPMENTS THOR RED- DUSTER SAM SEA-DART

THOR RAMJET DEVELOPMENT

SEA-DART MACH = 3. 5 design High altitude interceptor

Solid rocket booster ODIN R&R ramjet SURFACE TO AIR RAM-JET MISSILE SRARM

SEA DART LAND DART

RED-DUSTER