Last Updated On [03-11-2023]
A launch vehicle has a main rocket engine with two identical strap-on motors, all of which fire simultaneously during the operation. The main engine delivers a thrust of $6300 \mathrm{kN}$ with a specific impulse of $428 \mathrm{~s}$. Each strap-on motor delivers a thrust of $12000 \mathrm{kN}$ with specific impulse of $292 \mathrm{~s}$. The acceleration due to gravity is $9.81 \mathrm{~m} / \mathrm{s}^{2}$. The effective (combined) specific impulse of the vehicle is____________ $\quad \mathrm{s}$.
Question ID - 155671 :- A launch vehicle has a main rocket engine with two identical strap-on motors, all of which fire simultaneously during the operation. The main engine delivers a thrust of $6300 \mathrm{kN}$ with a specific impulse of $428 \mathrm{~s}$. Each strap-on motor delivers a thrust of $12000 \mathrm{kN}$ with specific impulse of $292 \mathrm{~s}$. The acceleration due to gravity is $9.81 \mathrm{~m} / \mathrm{s}^{2}$. The effective (combined) specific impulse of the vehicle is____________ $\quad \mathrm{s}$.
A launch vehicle has a main rocket engine with two identical strap-on motors, all of which fire simultaneously during the operation. The main engine delivers a thrust of $6300 \mathrm{kN}$ with a specific impulse of $428 \mathrm{~s}$. Each strap-on motor delivers a thrust of $12000 \mathrm{kN}$ with specific impulse of $292 \mathrm{~s}$. The acceleration due to gravity is $9.81 \mathrm{~m} / \mathrm{s}^{2}$. The effective (combined) specific impulse of the vehicle is____________ $\quad \mathrm{s}$.
Next Question :
A substance experiences an entropy change of $\Delta s>0$ in a quasi-steady process. The rise in temperature (corresponding to the entropy change $\Delta \mathrm{s}$ ) is highest for the following process:
(A) isenthalpic
(B) isobaric
(C) isochoric
(D) isothermal
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