Depending on the relative direction of motion of the planet and the spacecraft, a gravity assist can either speed up, slow down, or merely change the direction of the spacecraft.

The first question is easy—a gravity assist (also called a gravity slingshot) is a space maneuver in which a spacecraft gets a speed boost by moving past a planet. You could also use the gravity assist to slow down or even to change directions.

The principle of gravity assist boosts the spacecraft’s velocity because the planet and the spacecraft tug on one another while orbiting the Sun. The spacecraft makes the planet lose some of its orbital momentum.

Gravity assistance can be used to accelerate a spacecraft, that is, to increase or decrease its speed or redirect its path. The “assist” is provided by the motion of the gravitating body as it pulls on the spacecraft.

The “gravity assist” flyby technique can add or subtract momentum to increase or decrease the energy of a spacecraft’s orbit. Had Jupiter not been there at the right time, the spacecraft would have reached aphelion near Jupiter’s orbital distance (about 5 AU or 750,000,000 km from the Sun).

NASA conducts microgravity experiments on earth using drops towers and aircraft flying parabolic trajectories. Allowing the experiment hardware to free fall a distance of 432 feet (132 m) creates the microgravity environment at the Zero-G facility.

Michael A. Minovitch

But when it gets to the Moon, the Moon is the closest body so its gravity will have the strongest effect on the spacecraft. If it flies past close enough and stays flying fast enough that it can’t be captured by the body to start orbiting it, that spacecraft will slingshot around.

In between these adjustments, the spacecraft simply moves along its trajectory without accelerating. The most fuel-efficient means to move from one circular orbit to another is with a Hohmann transfer orbit: the spacecraft begins in a roughly circular orbit around the Sun.

At liftoff, the two Solid Rocket Boosters consume 11,000 pounds of fuel per second. That’s two million times the rate at which fuel is burned by the average family car. The twin Solid Rocket Boosters generate a combined thrust of 5.3 million pounds.

1 : the curve that a body (such as a planet or comet in its orbit or a rocket) describes in space. 2 : a path, progression, or line of development resembling a physical trajectory an upward career trajectory.

One answer to making cars more energy efficient is to make them lighter weight. Accelerating a light vehicle takes less energy than accelerating a heavy one, so lightweight materials are a clear solution.

According to Bernoulli’s principle, for a given volume of air, the higher the velocity the air molecules are travelling, the lower the pressure becomes. Once the air stagnates at the point in front of the car, it seeks a lower pressure area, such as the sides, top and bottom of the car.

Replacing cast iron and traditional steel components with lightweight materials such as high-strength steel, magnesium (Mg) alloys, aluminum (Al) alloys, carbon fiber, and polymer composites can directly reduce the weight of a vehicle’s body and chassis by up to 50 percent and therefore reduce a vehicle’s fuel …

As one of the least expensive new vehicles money can buy, the Mitsubishi Mirage is also the most basic, and it takes the title of being the lightest car available.

The heaviest cars on the market: Weighing over 4 tons, this Ford truck leads the way

• Mercedes-Benz Mercedes-AMG G-Class.
• Cadillac Escalade ESV.
• Nissan NV2500 HD Cargo.
• Nissan NV1500 Cargo.
• Toyota Land Cruiser.
• Ford Expedition MAX.
• Toyota Tundra CrewMax.
• Chevrolet Tahoe.

CarThrottle’s readers even dubbed it “the ugliest car ever made,” with the Fiat Multipla outpacing everyone’s favorite design whipping boy, the Pontiac Aztek.

Top Ten Best Selling Cars of All Time

No problem–at least, not if you live in China. The country is home to the cheapest car in the world, the very basic Jiangnan Alto, powered by a 0.8-liter, three-cylinder engine and selling for a mere $3,785.32 (25,800 yuan). If China is a bit far from where you’d planned to purchase a car, not to worry.

According to the findings, Canada has the lowest entry price for the coupe, at $231,700 (US$173,613) or 81 per cent cheaper than the global average.

Singapore

Cars in Dubai are comparatively less expensive than those in the western hemisphere, so selling your vehicle and repurchasing one locally is more economical than paying numerous shipping costs and importation taxes.

You can’t buy a Car unless you are a Resident/National. to buy a car you must have a UAE licence, to get a UAE licence you must have Residency, you must also show residency to register your car.