Problem: A satellite is launched into Earth orbit by a Delta II launch vehicle (LV).  The Delta LV's engines do not perform as expected, and at upper-stage burnout the satellite has the following states: altitude is 250 km, inertial velocity is 7.58 km/s, flight-path angle is 0.6 deg.  The satellite mass after burn-out and separation is 2,300 kg.

a) Determine the velocity impulse (DV) required to obtain a circular orbit when the satellite reaches its apogee.

b) If the satellite uses its on-board propulsion system for the circularization burn, determine the propellant mass required for the circularization burn (assume the on-board hydrazine engine has an I_sp = 280 sec).

Problem: A new heat shield is being tested experimentally by launching a payload that consists of a re-entry capsule with mass m = 200 kg, drag coefficient C_D = 1.7, and radius r = 0.65 m.  Design an acceptable engine cut-off state (r, V, and g) that satisfies the following mission constraints:  1) the re-entry capsule's maximum deceleration is 12 g, and 2) the flight time from engine cut-off to entry interface (EI) must be greater than 15 min to allow payload separation procedures.  In addition, determine the inertial velocity and flight-path angle at EI.

Posted Date: 2/19/2013 2:14:48 AM | Location : United States

Ask an Expert

Related Discussions:- Determine the velocity impulse, Assignment Help, Ask Question on Determine the velocity impulse, Get Answer, Expert's Help, Determine the velocity impulse Discussions

Write discussion on Determine the velocity impulse
Your posts are moderated

Write your message here..

Related Questions

Total annual sales revenue, Mr. Homer Simpson, President and Chief Executiv... Mr. Homer Simpson, President and Chief Executive Officer of Duff's Beer Making Supplies Inc. recently hired you as the new budget analyst for his company.  As your first duty, he h

Job-order costing, Division B uses  normal  costing in its job-order costin... Division B uses  normal  costing in its job-order costing system, with manufacturing overhead  applied  based on direct labour hours.  You have obtained the following information a

Briefly decribe the benefits of a cash budget, You are provided with the su... You are provided with the subsequent information relating to Cello Ltd. The accountant is currently preparing the budget for the next three months ending 30 June 2010.

Effective annual rate, The credit term from the supplier is 2/30, net 60. ... The credit term from the supplier is 2/30, net 60. Requirements: Write the calculation Determine the effective annual rate if the firm does not take the discount.

Prepare cash flow statement, The following details are available from a com... The following details are available from a company:                                                  2003                 2004                                      2003

Direct material cost variances (dmcv), Direct Material Cost Variances (DMCV... Direct Material Cost Variances (DMCV) This variance is a general difference in the standard direct material cost and the actual direct material cost. This variance may be prese

Overhead anaylysis, the annual overhead costs for abc ltd which has 3 produ... the annual overhead costs for abc ltd which has 3 production centeres and 2 service centers are as follows. indirect wages & supervision X 2million Y 2million 3 production departme

Marginal costing.., importance of marginal costing &standing costing importance of marginal costing &standing costing

Calculate the cash value financing interest rate , Calculate the today's ca... Calculate the today's cash value of a car that can be leased with $5000 down, bi-weekly payments of $199 over 4 years and a buy-back value of $15,000 at the end of the lease if the

Factory overhed anlysis, 7.14 7.14