User karthikeyan

35 votes

3 answers

6k views

Why was it necessary to program InSight with an ability to land in dust storms?

asked Nov 26, 2018 at 17:15

31 votes

1 answer

6k views

What are these membranes at the aft end of the Shuttle that get torn off during lift off?

asked Jan 24, 2019 at 12:03

21 votes

2 answers

3k views

How is thrust transmitted from strap on boosters to the central core?

asked Nov 20, 2018 at 20:08

20 votes

2 answers

4k views

Where does the thrust act in a rocket engine and how is it transferred to rocket structure?

asked Jan 23, 2018 at 4:00

15 votes

1 answer

2k views

What is the advantage of using Helium over Nitrogen when used for pressurising LOx?

asked Sep 26, 2018 at 16:33

14 votes

4 answers

7k views

How can electronics on board JWST survive the low operating temperature while it's difficult to survive lunar nights?

asked Jul 20, 2019 at 15:08

13 votes

1 answer

1k views

Why does the 2nd stage of Falcon 9 need compressed He tanks?

asked Jun 10, 2018 at 6:59

12 votes

1 answer

166 views

Why did GRACE mission have launch window?

asked Jun 28, 2019 at 4:55

11 votes

2 answers

2k views

Why latest Landsat satellites have solar panel on only one side?

asked Feb 11, 2019 at 10:43

9 votes

1 answer

3k views

Why is a purging process necessary for static firing test of liquid rocket engines?

asked Nov 5, 2018 at 4:56

8 votes

1 answer

773 views

Why is Nodal precession affected by the rotational period of the planet?

asked Apr 16, 2018 at 11:46

7 votes

1 answer

132 views

What parameters of an rocket engine determines whether it is fit for any more static hot fire test?

asked Sep 11, 2018 at 13:37

7 votes

3 answers

6k views

Why is Adiabatic wall temperature taken as the driving temperature in rocket engines?

asked Nov 10, 2018 at 8:15

7 votes

1 answer

443 views

How accurate is the following claim about NASA, from the movie Martian?

asked Nov 23, 2018 at 13:18

6 votes

1 answer

372 views

Would a Martian landing and take off require a flame trench/deflector?

asked Sep 30, 2018 at 20:42

6 votes

1 answer

873 views

Why are 22N and 440N liquid engines quite common?

asked Oct 10, 2018 at 12:21

6 votes

1 answer

733 views

Which is the preferred mode of liquid rocket engine cutoff - fuel lean cutoff or fuel rich cutoff?

asked Jul 20, 2018 at 16:16

6 votes

3 answers

936 views

Is it appropriate to use the term "geology" for Martian studies?

asked Nov 27, 2018 at 6:46

6 votes

1 answer

2k views

What was the colour of the shoes used by the Apollo astronauts in moon landing?

asked Dec 9, 2018 at 16:43

5 votes

1 answer

110 views

Is the payload HP3, onboard the InSight a single use instrument?

asked Nov 26, 2018 at 17:02

5 votes

0 answers

226 views

What is the droplet size that is desirable for pintle injectors?

asked Jun 5, 2018 at 14:13

5 votes

0 answers

414 views

Why is heated Helium used for tank pressurisation in Falcon 1?

asked Sep 17, 2018 at 17:04

5 votes

1 answer

190 views

Why NASA hosts many of their reports public, while ESA/JAXA/ Roscomos doesn't?

asked Nov 23, 2018 at 12:56

4 votes

0 answers

94 views

Why doesn't a regeneratively cooled engine crack due to differential expansion induced by thermal gradients?

asked Nov 23, 2018 at 18:27

4 votes

1 answer

2k views

Which of the orientation is preferred for static fire testing of a liquid rocket engine - vertical or horizontal?

asked Aug 3, 2018 at 3:32

4 votes

1 answer

574 views

Does LOx stay as liquid when entering combustion chamber?

asked Feb 6, 2018 at 8:45

4 votes

1 answer

1k views

Is it possible to capture geostationary satellites with DSLR?

asked Jan 28, 2019 at 12:01

4 votes

2 answers

140 views

How close will the cubesats be when numerous of them are launched simultaneously?

asked Nov 30, 2018 at 18:03

4 votes

1 answer

305 views

How would Ingenuity handle Martian Storm and dust devils?

asked May 14, 2021 at 14:53

3 votes

1 answer

346 views

Why does the exhaust plume apprear to be throbbing?

asked Jan 24, 2019 at 12:35

Stack Exchange Network

56 Questions

Why was it necessary to program InSight with an ability to land in dust storms?

What are these membranes at the aft end of the Shuttle that get torn off during lift off?

How is thrust transmitted from strap on boosters to the central core?

Where does the thrust act in a rocket engine and how is it transferred to rocket structure?

What is the advantage of using Helium over Nitrogen when used for pressurising LOx?

How can electronics on board JWST survive the low operating temperature while it's difficult to survive lunar nights?

Why does the 2nd stage of Falcon 9 need compressed He tanks?

Why did GRACE mission have launch window?

Why latest Landsat satellites have solar panel on only one side?

Why is a purging process necessary for static firing test of liquid rocket engines?

Why is Nodal precession affected by the rotational period of the planet?

What parameters of an rocket engine determines whether it is fit for any more static hot fire test?

Why is Adiabatic wall temperature taken as the driving temperature in rocket engines?

How accurate is the following claim about NASA, from the movie Martian?

Would a Martian landing and take off require a flame trench/deflector?

Why are 22N and 440N liquid engines quite common?

Which is the preferred mode of liquid rocket engine cutoff - fuel lean cutoff or fuel rich cutoff?

Is it appropriate to use the term "geology" for Martian studies?

What was the colour of the shoes used by the Apollo astronauts in moon landing?

Is the payload HP3, onboard the InSight a single use instrument?

What is the droplet size that is desirable for pintle injectors?

Why is heated Helium used for tank pressurisation in Falcon 1?

Why NASA hosts many of their reports public, while ESA/JAXA/ Roscomos doesn't?

Why doesn't a regeneratively cooled engine crack due to differential expansion induced by thermal gradients?

Which of the orientation is preferred for static fire testing of a liquid rocket engine - vertical or horizontal?

Does LOx stay as liquid when entering combustion chamber?

Is it possible to capture geostationary satellites with DSLR?

How close will the cubesats be when numerous of them are launched simultaneously?

How would Ingenuity handle Martian Storm and dust devils?

Why does the exhaust plume apprear to be throbbing?