If the spacecraft detects an anomaly, it changes the carrier between four tones, based on urgency.

If the manoeuver is timed properly, Mars will be " arriving " under the spacecraft when this happens.

If the spacecraft started to reenter nose first ( another stable reentry attitude for the spacecraft ), airflow over the spoiler would flip the spacecraft around to the proper, heatshield-first reentry attitude, a technique called shuttlecocking.

If the brightness of the object exceeded the maximum limit of eight times the brightness of Canopus, the spacecraft would search for a new star.

If the CSM failed, the spacecraft and Saturn IB for the next Skylab mission would have been launched with two astronauts to retrieve the crew ; given Skylab's ample supplies, its residents would have been able to wait up to several weeks for the rescue mission.

If the propulsion system must produce large amounts of thrust, or have a high specific impulse, as on the main motor of an interplanetary spacecraft, other technologies are used.

If the nuclear reactor is left on the ground and its energy transmitted to the spacecraft, the weight of the reactor is removed as well.

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

If the atmosphere is thick enough, a single pass through it can be sufficient to slow a spacecraft as needed.

If the spacecraft's purpose is only to fly by the inner planet, then there is typically no need to slow the spacecraft.

If a spacecraft gets too far into the atmosphere, the energy lost to friction can exceed that gained from the planet's gravity.

If a spacecraft gets close to the Schwarzschild radius of a black hole ( the ultimate gravity well ), space becomes so curved that slingshot orbits require more energy to escape than the energy that could be added by the black hole's motion.

If the spacecraft counters the force towards the asteroid by, e. g., an ion thruster, the net effect is that the asteroid is accelerated towards the spacecraft and thus slightly deflected from its orbit.

If Slayton had flown MA-7, his spacecraft would have been named Delta 7, as this would have been the fourth manned flight and Delta ( Δ ) is the fourth letter in the Greek alphabet.

If used over Venus for instance, the spacecraft could aeromaneuver with the lift provided by the waverider to a degree that no gravitational slingshot could hope to achieve.

If the spacecraft is meant to be able to return to its point of launch " on command ", then some sort of maneuvering will be required to counteract the fact that the Earth is turning under the spacecraft as it flies.

If a collision with larger debris does occur, many of the resulting fragments from the damaged spacecraft will be in the mass range, and these objects become an additional collision risk.

If the speed of the particle beams is great enough, the radiation that hits the spacecraft will be of a frequency that can be reflected.

) If the timer expires, the spacecraft enters a " command loss " algorithm that cycles through a predefined sequence of hardware and / or software modes ( such as the selection of a backup command receiver ) until a valid command is received.

If, at any time during the assignment pass, the compiler finds that there are no more index words available for assignment, the warning message `` No More Index Words Available '' will be placed in the object program listing, the table will be altered to show that index words 1 through 96 are available, and the assignment will continue as before.

If the compiler finds that there are no more electronic switches available for assignment, the warning message `` No More Electronic Switches Available '' will be placed in the object program listing, the table will be altered to show that electronic switches 1 through 30 are available, and assignment will continue as before.

If elements in the sample space increase arithmetically, when placed in some order, then the median and arithmetic average are equal.

If a tile is placed between two hotel chains of the same size, the individual player who places the tile decides which hotel chain remains on the board and which is acquired.

If a detector was placed at a distance of 1 m, the ion flight times would be X and Y ns.

* If the dealer's button is on, the table is in the point round where most casinos will allow a pass line bet to be placed.

If a non-working point number placed, bought or laid becomes the new point as the result of a come-out, the bet is usually refunded, or can be moved to another number for free.

If a person's hands are placed around the glass without touching it, the vanes will turn slowly or not at all, but if the glass is touched to warm it quickly, they will turn more noticeably.

If the index finger of the right hand is pointed forward, the middle finger bent inward at a right angle to it, and the thumb placed at a right angle to both, the three fingers indicate the relative directions of the x -, y -, and z-axes in a right-handed system.

If the third layer is placed so that its atoms are directly above those of the first layer, the stacking will be ABA — this is the hcp structure, and it continues ABABABAB.

If this issue is raised, evidence will be placed before the court, which will normally rule as a preliminary matter whether the plea is substantiated, and if it so finds, the projected trial will be prevented from proceeding.

If there is a direct object, the indirect object can be expressed by an object pronoun placed between the verb and the direct object.

If a story is found to be untrue, it is disqualified, but particularly amusing ones are placed in the urban legend section of the archives.

If the 5 were placed on the right, 5 would be written.

If the court finds that the respondent is " seriously mentally impaired ," he or she will be placed in a psychiatric hospital for further evaluation and possibly treatment.

If a first body of mass M < sub > A </ sub > is placed at a distance R from a second body of mass M < sub > B </ sub >, each body experiences an attractive force F < sub > g </ sub >

If placed, it can grow anywhere, with a few exceptions.

If a player is not sitting on a particular spot, the hand is still assigned, but then placed on the discard pile with the four unused cards.

If the Prime Minister dies in office, the Cabinet chooses an Interim Prime Minister, to run the government until a new government is placed in power.

If another operator is found before two operands are found, then the old operator is placed aside until this new operator is resolved.

If a person looks at a straight object, such as a pencil or straw, which is placed at a slant, partially in the water, the object appears to bend at the water's surface.

If the diaphragm is placed on the patient, body sounds vibrate the diaphragm, creating acoustic pressure waves which travel up the tubing to the listener's ears.

If the bell is placed on the patient, the vibrations of the skin directly produce acoustic pressure waves traveling up to the listener's ears.

# If alkaline transfer methods are used, the DNA gel is placed into an alkaline solution ( typically containing sodium hydroxide ) to denature the double-stranded DNA.

If the interceptors were placed in orbit, some of them could be positioned over the Soviet Union at all times.