Definitions for ramjet
ˈræmˌdʒɛtram·jet

Princeton's WordNetRate this definition:0.0 / 0 votes

1. ramjet, ramjet engine, atherodyde, athodyd, flying drainpipenoun

   a simple type of jet engine; must be launched at high speed

WiktionaryRate this definition:2.0 / 1 vote

1. ramjetnoun

   A jet engine in which forward motion forces air into an inlet, compressing it (as opposed to having a pump type device compressing the air for combustion with fuel), and where combustion is subsonic.

WikipediaRate this definition:0.0 / 0 votes

1. Ramjet

   A ramjet, or athodyd (aero thermodynamic duct), is a form of airbreathing jet engine that uses the forward motion of the engine to produce thrust. Since it produces no thrust when stationary (no ram air) ramjet-powered vehicles require an assisted take-off like a rocket assist to accelerate it to a speed where it begins to produce thrust. Ramjets work most efficiently at supersonic speeds around Mach 3 (2,300 mph; 3,700 km/h) and can operate up to speeds of Mach 6 (4,600 mph; 7,400 km/h). Ramjets can be particularly useful in applications requiring a small and simple mechanism for high-speed use, such as missiles. The US, Canada, and UK had widespread ramjet powered missile defenses during the 1960s onward, such as the CIM-10 Bomarc and Bloodhound. Weapon designers are looking to use ramjet technology in artillery shells to give added range; a 120 mm mortar shell, if assisted by a ramjet, is thought to be able to attain a range of 35 km (22 mi). They have also been used successfully, though not efficiently, as tip jets on the ends of helicopter rotors.Ramjets differ from pulsejets, which use an intermittent combustion; ramjets employ a continuous combustion process. As speed increases, the efficiency of a ramjet starts to drop as the air temperature in the inlet increases due to compression. As the inlet temperature gets closer to the exhaust temperature, less energy can be extracted in the form of thrust. To produce a usable amount of thrust at yet higher speeds, the ramjet must be modified so that the incoming air is not compressed (and therefore heated) nearly as much. This means that the air flowing through the combustion chamber is still moving very fast (relative to the engine), in fact it will be supersonic—hence the name supersonic-combustion ramjet, or scramjet.

ChatGPTRate this definition:0.0 / 0 votes

1. ramjet

   A ramjet is a type of jet engine that operates by compressing incoming air before combustion, using the forward speed of the aircraft, with no need for moving mechanical parts. It is most efficient at high speeds and typically used for aircraft or missile propulsion.

WikidataRate this definition:4.0 / 1 vote

1. Ramjet

   A ramjet, sometimes referred to as a flying stovepipe, or an athodyd which is an abbreviation of Aero thermodynamic duct, is a form of airbreathing jet engine using the engine's forward motion to compress incoming air, without a rotary compressor. Ramjets cannot produce thrust at zero airspeed, thus they cannot move an aircraft from a standstill. Ramjets therefore require assisted take off like JATO to accelerate it to a speed where it begins to produce thrust. Ramjets work most efficiently at supersonic speeds around Mach 3. This type of engine can operate up to speeds of Mach 6. Ramjets can be particularly useful in applications requiring a small and simple mechanism for high-speed use, such as missiles or artillery shells. Weapon designers are looking to use ramjet technology in artillery shells to give added range; a 120-mm mortar shell, if assisted by a ramjet, is thought to be able to attain a range of 22 mi. They have also been used successfully, though not efficiently, as tip jets on the end of helicopter rotors. Ramjets are frequently confused with pulsejets, which use an intermittent combustion, but ramjets employ a continuous combustion process. They are also confused with scramjets, a similar system used at supersonic speeds.

Dictionary of Military and Associated TermsRate this definition:0.0 / 0 votes

1. ramjet

   A jet-propulsion engine containing neither compressor nor turbine which depends for its operation on the air compression accomplished by the forward motion of the engine. See also pulsejet.

Matched Categories

1. • Jet Engine

How to pronounce ramjet?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say ramjet in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of ramjet in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of ramjet in Pythagorean Numerology is: 4

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=ramjet
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Ramjet
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Ramjet
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=ramjet
6. ^ Dictionary of Military and Associated Terms
   https://www.tradoc.army.mil/wp-content/uploads/2020/10/AD1029823-DOD-Dictionary-of-Military-and-Associated-Terms-2017.pdf