The high accelerations that rockets naturally possess means that rocket vehicles are often capable of vertical takeoff ; this can be done provided the vehicles engines provide more than the local gravitational acceleration away from the Earth or gravity source.

However, because kinetic energy is a square law on speed, this means that the faster the rocket is travelling before the burn the more orbital energy it gains or loses.

It means that the amount of delta-v to reach other planets, over and above that to reach escape velocity can be much less if the delta-v is applied when the rocket is travelling at high speeds, close to the Earth or other planetary surface ; whereas waiting until the rocket has slowed at altitude multiplies up the effort required to achieve the desired trajectory.

This could be important for interstellar travel because it means that deceleration at the destination can be performed with a magnetic parachute rather than a rocket.

Some projectiles provide propulsion during flight by means of a rocket engine or jet engine.

There are several different types of launch site, determined by the means by which the rocket gets to the pad.

Subsequently specific impulse means the momentum produced by the exhaust of a small amount of rocket fuel divided by the mass of that small amount of rocket fuel, in an inertial reference frame where the rocket is at rest before using that small amount of fuel.

Nebel, whose name means " fog " in German, is often incorrectly named as the inventor of the Nebelwerfer (" fog launcher ") system of rocket artillery used by the Wehrmacht ( German army ) in World War II.

The rocket would only have to carry the means of capturing solar energy, such as concentrators and mirrors.

The primary mission was the launch and deployment of the 7th Tracking and Data Relay Satellite ( TDRS ) by means of the two-stage Inertial Upper Stage ( IUS ) solid rocket.

This means that, although ground attack using automatic weapons fire is very often accompanied with bombing or rocket fire, the term " strafing " does not specifically include the last two.

Its circular peripteral portico, capped with a smaller peripteral tower, in turn capped with an anomalous slender cone, giving the appearance of a 20th century three-stage space rocket suggesting he may have envisaged the structure as a futurist vehicle for transporting all souls to heaven, is of an enriched Ionic order that substitutes winged cherub's heads for the usual rosettes on the abacus, possibly symbolically representing divine offspring of the Olympian god, Hermes / Roman god, Mercury, as the means of propulsion ; the prominent portico is attached to the reticent main church by the width of a single intercolumniation.

Soviet Soyuz ( rocket family ) | Soyuz rockets like the one pictured above were the first reliable means to transport objects into Earth orbit.

Thus Zarkov's rocket is the only means to escape certain death and they board willingly.

* The specific energy gained per unit delta-v is equal to the speed, so spend the delta-v when the rocket is going fast ; in the case of being decelerated by gravity this means as soon as possible.

He conceptualized and invented the airplane and the rocket ship as a means of space travel even before they were invented in our reality.

The concept of a reusable first-stage lifting body ( or in this case, bodies ) boosting a smaller spacecraft to high altitude for more efficient use of its propulsion was in direct competition with the vertical-ascent rocket doctrine of the 1960s as a means of achieving spaceflight, and for some time lost out to it, as even the Space Shuttle-which landed as a conventional aircraft-makes a vertical rocket-powered ascent in the " classical " manner.

The rocket has completely superseded the mortar, and is now, next to the lifeboat, the most important means of saving lives from shipwrecks.

JP Aerospace has uniquely chosen inflatable, buoyant components as a primary means of propulsion as opposed to standard rocket propulsion.

Saphir is the name of a French elevator research rocket and means " sapphire " in the French language.

Once a rocket exceeds amateur rocket criteria, it is considered " Licensed ," which means it requires either a License or Experimental Permit in order to fly.

Even though the clutch may physically be located very close to the pedal, such remote means of actuation are necessary to eliminate the effect of vibrations and slight engine movement, engine mountings being flexible by design.

Engine power is transmitted via a set of vee-belts that are slack when the engine is idling, but by means of a tensioner pulley can be tightened to increase friction between the belts and the sheaves.

If the initial value of a polynomial ( and of its finite differences ) is calculated by some means for some value of X, the difference engine can calculate any number of nearby values, using the method generally known as the method of finite differences.

This means that a driver can be ordered " by an authorised person ... upon production of evidence of his authorisation, require him to stop the running of the engine of that vehicle " and a " person who fails to comply ... shall be guilty of an offence and be liable on summary conviction to a fine not exceeding level 3 on the standard scale ".

Since 2001, trim levels are also indicated by including a number after the main index: '- 00 ' means base trim level, '- 01 ' means standard trim and '- 02 ' designates deluxe version ; for example, VAZ-21121-02 means Lada 112 hatchback with an 1. 6L SOHC engine and deluxe trim.

This performance was attained by means of the highly optimized yet platform independent LIBRT ray-tracing engine in BRL-CAD and by using solid implicit CSG geometry on several shared memory parallel machines over a commodity network.

The cargo trailer is, by means of a king pin, hooked to a horseshoe-shaped quick-release coupling device called a fifth wheel or a turntable hitch at the rear of the towing engine that allows easy hook up and release.

A large number of transmission ratios means the driver can operate the engine more efficiently.

Modern on-highway diesel engines are designed to provide maximum torque in a narrow RPM range ( usually 1200-1500 RPM ); having more gear ratios means the driver can hold the engine in its optimum range regardless of road speed ( drive axle ratio is also a critical factor ).

At, the air is at half the pressure of sea level, which means that the engine will produce less than half-power at this altitude.

For example, to avoid engine knocking ( aka pre-ignition or detonation ) and the related physical damage to the engine, the intake manifold pressure must not get too high, thus the pressure at the intake manifold of the engine must be controlled by some means.

However, since the charge in the cylinders is being pushed in by this air pressure, it means that the engine will normally produce only half-power at full throttle at this altitude.

This means that the auxiliary engine now also performs the vital function of powering an alternator to provide electrical power and to recharge the yacht's batteries.

A propulsion system has a source of mechanical power ( some type of engine or motor, muscles ), and some means of using this power to generate force, such as wheel and axles, propellers, a propulsive nozzle, wings, fins or legs.

An aircraft propulsion system generally consists of an aircraft engine and some means to generate thrust, such as a propeller or a propulsive nozzle.

The word " machine " is derived from the Latin word machina, which in turn derives from the Doric Greek μαχανά ( machana ), Ionic Greek μηχανή ( mechane ) " contrivance, machine, engine " and that from μῆχος ( mechos ), " means, expedient, remedy ".

According to Douglas Harper, the Swedish terms originated from "( trampcykel med ) mo ( tor och ) ped ( aler )", which means " pedal cycle with engine and pedals " ( the earliest versions had auxiliary pedals ).

Most milking machines are powered by electricity but, in case of electrical failure, there can be an alternative means of motive power, often an internal combustion engine, for the vacuum and milk pumps.

This wheel supercharges the engine air intake to a degree that can be controlled by means of a wastegate or by dynamically modifying the turbine housing's geometry ( as in a VGT turbocharger ).

High performance cars often use thermal insulation as a means to increase engine performance.