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This page is an incomplete list of orbital rocket engine data and specifications. Current, upcoming, and in-development rocket engines ... Gas generator 302.3–313
A container ship can decrease fuel use close to one-third if it drops its speed 10%. Since the 2008-2009 recession, major carriers have reduced ship speeds to 19 mph through slow steaming.
The earliest space vehicles were expendable launch systems, using a single or multistage rocket to carry a relatively small spacecraft in proportion to the total vehicle size and mass. [1] An early exception to this, the Space Shuttle , consisted of a reusable orbital vehicle carrying crew and payload, supported by an expendable external ...
The only rocket-powered fighter ever deployed was the Messerschmitt Me 163B Komet. The Komet had a HWK 109-509, a rocket motor which consumed methanol/hydrazine as fuel and high test peroxide T-Stoff as oxidizer. The hypergolic rocket motor had the advantage of fast climb and quick-hitting tactics at the cost of being very volatile and capable ...
Tailor-made. Shipping accounts for around 3% of global greenhouse gas emissions, and moves about 90% of the world’s goods. Earlier this year, the International Maritime Organization — the UN ...
Energy efficiency is expressed in terms of fuel economy: [2] distance per vehicle per unit fuel volume; e.g., km/L or miles per gallon (US or imperial). distance per vehicle per unit fuel mass; e.g., km/kg. [11] distance per vehicle per unit energy; e.g., miles per gallon equivalent (mpg-e).
For rockets and space vehicles, propellants usually take up 2/3 or more of their total mass. Large upper-stage rocket engines generally use a cryogenic fuel like liquid hydrogen and liquid oxygen (LOX) as an oxidizer because of the large specific impulse possible, but must carefully consider a problem called "boil off," or the evaporation of the cryogenic propellant.
The following chart shows the number of launch systems developed in each country, and broken down by operational status. Rocket variants are not distinguished; i.e., the Atlas V series is only counted once for all its configurations 401–431, 501–551, 552, and N22.