If we were to set 80 % of the mass of the photon rocket

If a photon rocket begins its journey in low earth orbit, then one year of thrusting may be required to achieve an earth escape velocity of 11. 2 km / s if the vehicle is already in orbit at a velocity of 9, 100 m / s, and 400 m / s additional velocity is obtained from the east to west rotation of the earth.

If the rocket or aircraft is moving at about a constant speed, then distance divided by time is just speed, so power is thrust times speed:

If a rocket is launched to deliver a payload from a planetary surface into space it is called a launch vehicle.

After being chosen to be the first teacher in space, McAuliffe was a guest on several television programs, including Good Morning America ; the CBS Morning News ; the Today Show ; and The Tonight Show Starring Johnny Carson, where, when asked about the mission, she stated, " If you ’ re offered a seat on a rocket ship, don ’ t ask what seat.

If done by direct propulsion, the rocket equation dictates that a large fraction of the spacecraft mass must be fuel.

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 ).

If the manoeuvre from GTO to GEO is to be performed with a single impulse, as with a single solid rocket motor, apogee must occur at an equatorial crossing.

If all went well the rocket would reroute the fuel for this engine to the other engines and have the rocket burn longer to compensate for the loss of acceleration.

If the cycle happens to match a resonance frequency of the rocket then dangerous oscillations can occur through positive feedback, which can in extreme cases tear the vehicle apart.

If the rocket is never lit then SpaceShipOne can glide down to the ground.

If aerodynamic drag and transient changes in pressure are neglected, a closed-form approximation for the peak height of a rocket fired vertically can be expressed as follows:

If the centre of mass is placed forward of the fins, the rocket will nose dive.

If the force is too much, no metal will hold it and the ship will blow up, so imposing a strict limit on how fast a rocket can accelerate ) and people using oxygen pills to survive unprotected in the vacuum of space ( which would suck their blood out through their skin and the air from their lungs as well as popping their eyes ), Space Patrol was better up on science.

If the rocket failed during the first phases of the flight, the Emergency Detection System ( EDS ) would automatically give the command to abort.

* Pad abort: If the rocket failed in the last five minutes before launch, the CM and the launch escape system ( LES, see figure ) would separate from the remainder of the rocket below with the LES propelling itself and the CM beneath it upward and eastward to the sea using a small solid-fuelled engine ( the pitch control motor ) at the top of the tower on the launch escape system.

If a rocket exceeds these capabilities ( or if it has a person on-board ), it is considered licensable.

If he does not contact them by that time, then they can launch the rocket.

If a stable or circular orbit is needed, once the payload reaches the highest part of its trajectory then an on-board rocket engine (" kick motor ") or other means is needed to circularize the trajectory to the appropriate Earth orbit.

If any of the worldlines bends away from a geodesic path in some region, we can think of the observers as test particles that accelerate by using ideal rocket engines with a thrust equal to the magnitude of their acceleration vector.

If this new Bible does not increase in significance by repeated readings throughout the years, it will not survive the ages as has the King James Version.

If birds don't belong in a Square or Park, what does??

If private brand competition hasn't been felt in your product field as yet, have you thought how you will cope with it if and when it does appear??

If Af leads to an address Af that is equal to the address computed from Af, even though Af does not match Af, the chain of information cells is extended from Af by storing the address of the next available cell in the Y-region, Af, in Af.

If both George and a piece of information George does not have are prominent in the context, but the idea of telling George is new, then dominant stress will probably be on tell in why not tell George??

If, on the other hand, it is not settled, or while it is being debated and resolved, does the Federal government have a responsibility in situations like that in Prince Edward County??

If this threefold division of costs were to have its counterpart in the actual rates of charge for service, as it actually does have in some rates, there would result a three-part rate for any one class of service.

If this attitude is seriously questioned in the Soviet Union, it does not necessarily follow that the majority of the society in which I live is too aware of the necessity for clarity on this ethical as well as aesthetic point of view.

If a continuation card follows a statement that does not permit continuation cards, the compiler will generate a NOP and issue an error message.

If the compiler does encounter such statements, a warning message will be issued.

If the fourth dimension is a physical concept and not purely metaphysical, through what medium does it extend??

If a child does lose his first teeth prematurely because of decay -- and if no preventive steps are taken -- the other teeth may shift out of position, become overcrowded and malformed.

If he does, it's still better than an even chance he won't notice the transposition of the numbers, and if he should notice it, the thing can be passed off as an honest mistake.

If the administration does not succeed in passing the sales tax bill, or any other tax bill, it could very well be faced this spring at the fiscal session of the Legislature with an interesting dilemma.

If Bultmann's own definition of myth is strictly adhered to ( and it is interesting that this is almost never done by those who make such pronouncements ), the evidence is overwhelming that he does not at all exaggerate the extent to which the mythological concepts of traditional theology have become incredible and irrelevant.

If you know that he ( God ) is just ( righteous ), know that everyone also who does what is just ( righteous ) has been born of him.

If I get a low M. R., I do so because I want it that way or my dark self does.

* If it is required to use a single number X as an estimate for the value of numbers, then the arithmetic mean does this best, in the sense of minimizing the sum of squares ( x < sub > i </ sub > − X )< sup > 2 </ sup > of the residuals.

If the appellate court does find a legal defect in the decision " below " ( i. e., in the lower court ), it may " modify " the ruling to correct the defect, or it may nullify (" reverse " or " vacate ") the whole decision or any part of it.

If it does, ocean levels would rise by a few metres in a very short period of time.

If, however, there are no shares left when the chain is founded, then the founding player does not receive the free share.

If Anne formed an attachment to Weightman it does not imply that he was attracted to her.

If the numbering does not start at 0, the constant B may not be the address of any element.

If abiotic stress does not have a strong presence in an area, the biodiversity will be much higher.

If light moves instantaneously, the telescope does not move, and the true direction of the star relative to the observer can be found by following the line ES.