"rational needs" is a correct and usable phrase in written English.
You can use it when talking about a set of needs that are based on reason rather than emotion. For example, "He was able to identify his rational needs and make decisions accordingly."
The new Nissan Versa Note shakes up the category by satisfying both the emotional and rational needs with features that are truly unexpected in the class, such as sleek styling and advanced innovation features like our Around View® Monitor parking assist system at an affordable price".
Though he is grossly unfair to the West African language Grebo, his argument that it is logically inadequate to serve the rational needs of blacks in Liberia who speak it offers an instructive account of the interplay between language and thought.
Aims of the provincial supplementing policy are include meeting the rational needs of prime health care institutions, and cutting the financial ties between doctors and drug manufacturers, gradually changing the medication practices of doctors, promoting the rational use of medicine, that same to essential medicines system.
Anxiety, after all, need not be rational, need not be coherent, can contain multitudes.
The rational need to reach an agreement has overcome my emotions".
My permit to carry a concealed weapon expired after ten years without my ever having gotten another gun or seeing a rational need for one.
For example, in organizing African American youth, the hip-hop community is consciously appealing to emotional identification with a distressed culture as much as the rational need for African Americans to gain more power in American society.
Numbers do a great job of filling our rational need for quantifiable information.
There is no rational need that won't be met, both before your arrival and during your stay.
And before politicians ask for more money they should come up with a concrete plan - it's one thing to say you need money for roads; it's another thing entirely to present a rational need and a reasonable, detailed approach.
From the point of view of the reality of the situation there was no rational need for the participants in the VC to wait so much longer than those in the HC, let alone repeat the question.
