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⭐️raj vigya > space tech: launch vehicles > Flashcards

space tech: launch vehicles Flashcards

1
Q

what is a launch vehicle

A

a rocket propelled vehicle which is used to carry a payload from earth’s surface to earth’s orbit or space

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2
Q

types of discontinued historical launch vehicles?

A

SLV (satellite launch vehicles) and ASLV (augmented satellite launch vehicles)

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3
Q

which types of launch vehicles are operational in india

A

polar satellite launch vehicles (PSLV)
geosynchronous satellite launch vehicle (GSLV)

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4
Q

which were the first gen launch vehicles

A

SLVs

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5
Q

under whose leadership were first gen SLVs developed?

A

apj abdul kalam

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6
Q

in which year was the first FAILED test for SLVs?

A

1979

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7
Q

when was the first successful test for SLVs?

A

in 1980 which was the second test and successful

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8
Q

which propellant were used in first gen SLVs?

A

4 stage solid propellants

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9
Q

till which orbit could SLVs take a payload

A

LEO

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10
Q

what was the payload capacity of first gen SLVs?

A

40-50 kg

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11
Q

example of satellite of india launched through SLVs?

A

rohini series satellites

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12
Q

which were the 2nd gen launch vehicles?

A

ASLVs

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13
Q

during which years were ASLVs used?

A

1987-1994

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14
Q

till which orbit could ASLVs take a payload?

A

LEO

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15
Q

which types of propellant was used in 2nd gen?

A

for ASLVs a 5 stage solid propellant

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16
Q

payload capacity of ASLVs?

A

140-150 kg

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17
Q

which series satellites were launched through ASLVs?

A

SRoSS

stretched rohini series satellites

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18
Q

full form of SRoSS?

A

stretched rohini series satellites

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19
Q

which were the 3rd gen launch vehicles?

A

PSLV
polar satellite launch vehicles

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20
Q

since when is india using PSLVs?

A

1994

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21
Q

which is the main launch vehicle of ISRO?

A

PSLVs

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22
Q

imp
which type of propellant is used in PSLVs?

A

4 stage (solid, liquid, solid, liquid)

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23
Q

how many strap on boosters in PSLVs?

A

6

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24
Q

what kind of propellant is used in strap on boosters of PSLVs?

A

solid propellant in the 6 boosters of PSLVs

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25
Q

which engine is used in solid state of PSLVs?

A

S139 engine

26
Q

which engine is used in liquid state of PSLVs?

A

vikas engine

27
Q

full form of vikas engine?

A

vikram ambalal sarabhai

28
Q

how many strap on boosters on the core alone of PSLVs?

A

no strap on boosters

29
Q

difference in the strap on boosters on standard and extra large PSLVs?

A

in ground/standard the 6 strap on boosters are with 9 tonne solid propellant vs in XL it is 12 tonne solid propellant in the same 6 strap on boosters

30
Q

in which orbit do PSLVs launch payload

A

all kinds of PSLVs launch in LEO

3rd gen tak LEO tak hi phoche

31
Q

payload capacity of a standard PSLV?

A

1680 kg up to LEO

32
Q

payload capacity of core alone of PSLV

A

1100 kg

standard 1680 kg tak le jata

33
Q

payload capacity of xl PSLV

A

1800 kg
core akeli 1100

34
Q

which are the 4th gen launch vehicles

A

GSLV

35
Q

which are the most powerful launch vehicles of isro

A

gslv

sabse common pslv
sabse powerful gslv

36
Q

since when is ISRO using GSLVs?

A

since 2001

37
Q

imp
what kind of propellants are being used in GSLVs?

A

3 stage
solid, liquid and cryogenic

38
Q

how many strap on boosters in GSLVs?

A

4

PSLV me 6 the

39
Q

what kind of propellant is used in strap on boosters of GSLV?

A

liquid propellant

PSLV me solid tha

40
Q

which engine is used in solid stage of GSLVs?

A

S200 engine

PSLV me s139 tha

41
Q

which engine is used in liquid stage of GSLVs?

A

vikas engine

same as PSLV

42
Q

which cryogenic engine is used in GSLVs?

A

CE7.5 or CE 20

43
Q

imp

when is CE7.5 used in cryogenic engine for GSLVs vs when is CE20 used?

A

mk 2 CE7.5
mk 3 CE20

44
Q

which cryogenic engine was used in mk 1 gslv

A

russian kvd engine

45
Q

very imp
carrying capacity table draw for types of GSLV

A
46
Q

imp mains

why are RLVs the future of launch vehicles

A

they reenter the earth’s atmos after launching the payload into space and lands at the targetted location while withstanding excessive heat and pressure
thus
they can be used for multiple launches

47
Q

when was RLV successfully tested by isro

A

in 2016

48
Q

name of the rlv successfully tested by isro in 2016

A

RLV-TD(technology demonstrator)

49
Q

which engine is used in rlv

A

scramjet

50
Q

full form of scramjet

A

supersonic combustion ramjet

51
Q

mains and pre
5 tests conducted under RLVs?

A

hypersonic flight
autonomous landing
powered cruise flight
hypersonic flight using air breathing propulsion
ATV (advanced technology vehicle)

52
Q

mains imp
significance of using RSLVs?

A

1 cost decrease of launch
2 frequent launches possible
3 manned mission possible like gaganyan
4 which would encourage space research
5 revenue increment
6 restrain problems of space debris
7 credibility of india and isro in tech field increase

53
Q

which rocket is under construction in the project of SSLV by isro?

A

baby rocket

54
Q

what kind of satellite payloads can be carried by SSLVs?

A

small satellites like micro and nano

55
Q

capacity of SSLVs for LEO

A

upto 500 kgs

56
Q

capacity of SSLVs for SSO

A

upto 300 kgs

57
Q

which orbits would SSLVs launch to

A

LEOs and SSOs

58
Q

mains short
characteristics of SSLVs

A

can be assembled in 15 days
capable of carrying small payloads
capable of multiple orbital drop offs

59
Q

how many stage propellants for SSLVs?

A

3 stage

60
Q

significance of SSLVs

A

launch cost decrease
frequent launch possible
increment in revenue

⭐️raj vigya (23 decks)

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