- Source: Sern
- Source: SERN
Sern may refer to:
SERN (single expansion ramp nozzle), a type of rocket nozzle
Lou Sern, an alias for American singer Tom Hooker
"Sern.", the standard botanical abbreviation for botanist Rutger Sernander
SERN, a fictional organization in the videogame Steins;Gate
a fictional sector of space from Star Wars
a raw meat dish in Chinese cuisine
See also
All pages with titles containing sern
Cerne (disambiguation)
Cern (disambiguation)
In rocketry, a SERN, which stands for single expansion ramp nozzle, is a type of physical linear expansion nozzle where the gas pressure transfers work only on one side. Traditional nozzles are axially symmetric, and therefore surround the expanding gas. Linear nozzles are not axially symmetric, but consist of a 2D configuration of two expansion ramps. A SERN could also be seen as a single sided aerospike engine.
Many designs for space planes with scramjet engines make use of SERNs because of the weight reduction at large expansion ratios, or the additional lift at under-expansion. The X-43, a test vehicle in NASA's Hyper-X programme, is a flying example.
One of the practical problems with the use of SERNs is the fact that they produce a pitching moment depending on the throttling of the engine, thereby requiring more control authority of the elevators, more complex control systems, etc.
References
Kata Kunci Pencarian:
- Steins;Gate
- Bola basket pada Pesta Olahraga Asia Tenggara 2011
- Renang pada Pesta Olahraga Asia Tenggara 2017
- Sern
- SERN
- Swiss Boy
- CERN
- Pratt & Whitney F119
- Landon Barker
- Cerne Abbas
- Tom Hooker
- Nozzle
- GigaBash
No More Posts Available.
No more pages to load.
