After reaching orbit, the crew spent time adapting themselves to the zero-gravity environment and preparing the spacecraft for Trans Lunar Injection, the burn of the third stage rocket that would propel them to the Moon.

Six minutes after the successful burn of the S-IVB, the Command / Service Module, containing the crew, separated from the rocket and traveled for before turning around and retrieving the Lunar Module from inside the expended rocket stage.

At this point, during tests of the CSM's steerable rocket engine in preparation for the burn to modify the craft's orbit, a malfunction occurred in the engine's backup system.

Because of a failure by the crew to activate a certain switch in the LM before sealing it off, it initially tumbled after separation and did not execute the rocket burn necessary for the craft's intentional de-orbit.

Air-breathing combustion engines are combustion engines that use the oxygen in atmospheric air to oxidise (' burn ') the fuel carried, rather than carrying an oxidiser, as in a rocket.

The HE warhead detonates on impact or when the fuse runs out ; usually the fuse is set to the maximum burn of the rocket motor but it can be shortened for improvised anti aircraft purposes.

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.

Air-breathing designs typically fly at supersonic or hypersonic speeds, and usually include a rocket engine for the final burn for orbit.

* 06: 15 UT Three minutes into the burn of the final rocket stage and Gagarin reports, ", I can't hear you very well.

Also, pulsed rocket motors that burn in segments and that can be ignited upon command are available.

Well under a tenth of orbital velocity from a small rocket thruster is enough to raise perigee if a design prioritizes minimizing such, but hybrid proposals optionally reduce requirements for the mass driver itself by having a greater portion of delta-v by a rocket burn ( or orbital momentum exchange tether ).

The large TLI burn, usually performed by a chemical rocket engine, increases the spacecraft's velocity, changing its orbit from a circular low Earth orbit to a highly eccentric orbit.

Composite propellant, two-stage shaped burn and laminated body solid rocket motor ;

As part of the Green Team, he covered the launch phase up to translunar injection, the rocket burn that sent Apollo 8 to the Moon.

The solid fuel retro rocket may have exploded near the end of its scheduled burn.

* Segment ( rocketry ), a controlled rocket motor burn of specified duration

For the same reasons a new type of Walter rocket was envisioned, a modification of the engine in the Me 163 that would burn coal-gas ( benzine ) instead of the hydrogen peroxide used in other Walter designs ( although a small amount of peroxide was used to drive the fuel pumps ).

If even more speed is needed than available from gravity assist alone, the most economical way to utilize a rocket burn is to do it near the periapsis ( closest approach ).

A given rocket burn always provides the same change in velocity ( Δv ), but the change in kinetic energy is proportional to the vehicle's velocity at the time of the burn.

Upon reaching Mars, Surveyor fired its main rocket engine for the 22-minute Mars orbit insertion ( MOI ) burn.

The rocket burned a hypergolic mixture of S-Stoff ( nitric acid with 5 % iron ( III ) chloride ) and R-Stoff ( an organic amine-mixture of 50 % dimethylaminobenzene and 50 % triethylamine called Tonka 250 ) as propellant, delivering thrust initially, declining to over the 17 second burn.

The Atlas A first flew on 11 June 1957 ; the flight lasted only about 24 seconds before the rocket blew up.

Throughout the siege, which lasted until 8 April, the allies were subjected to heavy mortar, rocket, and artillery bombardment, combined with sporadic small-scale infantry attacks on outlying positions.

He flew into space on May 24, 1962, atop the Mercury-Atlas 7 rocket for a three-orbit science mission that lasted nearly five hours.

The mission began July 28, 1973, with the launch of three astronauts on the Saturn IB rocket, and lasted 59 days, 11 hours and 9 minutes.

The mission started November 16, 1973 with the launch of three astronauts on a Saturn IB rocket, and lasted 84 days, 1 hour and 16 minutes.

The rocket burn lasted for 76 seconds.

In June 2008 Egypt brokered a cease fire which lasted until 4 November when Israeli forces crossed into Gaza and killed six Hamas fighters which saw rocket attacks on Israel increase from two in September and October to 190 in November.

Third, the United States is pressing forward in the development of large rocket engines to place vehicles of many tons into space for exploration purposes.

But an even bigger facility would be needed for the mammoth rocket required for the manned lunar mission, so land acquisition was started in July 1961 for a Launch Operations Center ( LOC ) immediately north of Canaveral at Merritt Island.

The rocket was returned to the Vehicle Assembly Building, the fuel tank replaced and the rocket returned to the launch pad in February in time for the scheduled launch.

Weaponry varies by a very wide degree between AFVs-lighter vehicles for infantry carrying, reconnaissance or specialist roles may have only a machine gun for self-defence ( or no armament at all ), whereas heavy self propelled artillery will carry large guns, mortars or rocket launchers.

from a late-1940s United States Navy program to develop a guided rocket weapon for air-to-air use.

The AAM-N-6a was similar to the-6, but used a new Thiokol liquid-fuel rocket engine for improved performance.

The AIM-7F, which entered service in 1976, had a dual-stage rocket motor for longer range, solid-state electronics for greatly improved reliability, and a larger warhead.

Colonel Kari Renko, an engineer at the Finnish Air Force, was quoted by Helsingin Sanomat as saying about this failure, " The problem involves the rocket engines which have been in use for decades " and that Finland first was told of the problems by the Americans about two years ago.

What the Soviets lacked in flexibility, they made up for in number of multiple rocket launchers, cannon and mortar tubes.

Kármán later helped create the Jet Propulsion Laboratory, and played an integral part in establishing Caltech as one of the world's centers for rocket science.

" In John Byrne's 1986 origin version The Man of Steel, instead of adopting him through an orphanage, the Kents passed Clark off as their own child after their farm was isolated for months by a series of snowstorms that took place shortly after they found his rocket, using their past medical history of various miscarriages to account for their reasons for keeping Martha's pregnancy secret.

Three of twelve technologies on board had to work within a few minutes of separation from the carrier rocket for the mission to continue.

Theoretically, this should result in a better specific impulse than for rocket engines.