What are these circular spots on these Ariane V SRB nozzles?What would happen if one Ariane V SRB did not ignite properly? (there may be no lock-down mechanism)What is the reason for the Ariane 5 launcher with Intelsat 29e losing altitude?What are these air-vent-like structures on this satellite?What are these tiny triangular fins on the Soyuz launcher?What are these 'Lego' plates inside the Atlas 5 fairing?What makes exhaust from aluminum-based SRB propellant so bright?What are these discs on the Crawler-Transporter?What is the white spray-pattern residue inside these Falcon Heavy nozzles?What are these giant NASA boxes?Where are these historical IBM + Apollo related locations within NASA? What do these computers do?What cubesats are these, what flags are on them, and why? What's the background story?
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What are these circular spots on these Ariane V SRB nozzles?
What would happen if one Ariane V SRB did not ignite properly? (there may be no lock-down mechanism)What is the reason for the Ariane 5 launcher with Intelsat 29e losing altitude?What are these air-vent-like structures on this satellite?What are these tiny triangular fins on the Soyuz launcher?What are these 'Lego' plates inside the Atlas 5 fairing?What makes exhaust from aluminum-based SRB propellant so bright?What are these discs on the Crawler-Transporter?What is the white spray-pattern residue inside these Falcon Heavy nozzles?What are these giant NASA boxes?Where are these historical IBM + Apollo related locations within NASA? What do these computers do?What cubesats are these, what flags are on them, and why? What's the background story?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
This Space Shuttle Almanac tweet says:
Pics 1-4 of todays @Arianespace #ArianeV VA249 launch carrying the #EDRSC & #Intelsat39 comsats from Kourou
and includes the cool (hot) image below.
- what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
- does this launch vehicle simply sit on these nozzle-like protrusions?
- Is there a lock down mechanism somewhere?
- what does one call these nozzle-like protrusions when one has one's space words handy?
I think that someone familliar with the Ariane V will know the answers to all four of these related items, so I've grouped them together rather than ask separately.
identify-this-object srb ariane
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
$endgroup$
add a comment |
$begingroup$
This Space Shuttle Almanac tweet says:
Pics 1-4 of todays @Arianespace #ArianeV VA249 launch carrying the #EDRSC & #Intelsat39 comsats from Kourou
and includes the cool (hot) image below.
- what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
- does this launch vehicle simply sit on these nozzle-like protrusions?
- Is there a lock down mechanism somewhere?
- what does one call these nozzle-like protrusions when one has one's space words handy?
I think that someone familliar with the Ariane V will know the answers to all four of these related items, so I've grouped them together rather than ask separately.
identify-this-object srb ariane
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
$endgroup$
add a comment |
$begingroup$
This Space Shuttle Almanac tweet says:
Pics 1-4 of todays @Arianespace #ArianeV VA249 launch carrying the #EDRSC & #Intelsat39 comsats from Kourou
and includes the cool (hot) image below.
- what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
- does this launch vehicle simply sit on these nozzle-like protrusions?
- Is there a lock down mechanism somewhere?
- what does one call these nozzle-like protrusions when one has one's space words handy?
I think that someone familliar with the Ariane V will know the answers to all four of these related items, so I've grouped them together rather than ask separately.
identify-this-object srb ariane
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
$endgroup$
This Space Shuttle Almanac tweet says:
Pics 1-4 of todays @Arianespace #ArianeV VA249 launch carrying the #EDRSC & #Intelsat39 comsats from Kourou
and includes the cool (hot) image below.
- what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
- does this launch vehicle simply sit on these nozzle-like protrusions?
- Is there a lock down mechanism somewhere?
- what does one call these nozzle-like protrusions when one has one's space words handy?
I think that someone familliar with the Ariane V will know the answers to all four of these related items, so I've grouped them together rather than ask separately.
identify-this-object srb ariane
identify-this-object srb ariane
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
edited Aug 7 at 14:58
Russell Borogove
102k4 gold badges361 silver badges445 bronze badges
102k4 gold badges361 silver badges445 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
asked Aug 7 at 1:24
uhohuhoh
50.3k23 gold badges199 silver badges649 bronze badges
50.3k23 gold badges199 silver badges649 bronze badges
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
Meet the Ariane EAP (Étage d'Accélération à Poudre, "Solid Booster Stage"):
what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
They are the business ends of the fusées d'éloignement, or separation motors, which push the SRBs away from the core after they burn out. There are four, not 8, at the bottom of the booster, and four more at the top -- all pointed generally inboard to drive the SRB casing away, but not so directly inboard as to impinge exhaust plumes on the core.
what does one call these nozzle-like protrusions when one has one's space words handy?
Those are the jupes arrière, or aft (nozzle) skirts. The rocket nozzles themselves extend beyond the skirts, through holes in the structure.
does this launch vehicle simply sit on these nozzle-like protrusions?
I believe that's correct - the entire weight of the launcher is resting on those nice flat plates.
Is there a lock down mechanism somewhere?
I would have thought so, but @Hobbes' answer suggests not.
Your still image (from T+0:04) is from a remarkably high-quality video, but it unfortunately cuts away from that camera just before the EAPs fire at T+0:06 (but not before you can see a lovely blue hydrogen-combustion shock formation in the Vulcain's plume!). Later in the video you can see the booster separation, but the sep motors aren't really visible at that distance -- the residual plume from the boosters is much brighter.
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
$endgroup$
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
add a comment |
$begingroup$
Is there a lock down mechanism somewhere?
There doesn't seem to be.
Detail of the aft skirt:
Note the lack of attachment hardware.
The page on the launch table says:
A la nuance près que si Ariane 4 est attachée par quatre crochets, Ariane 5 ne l’est pas.
With the nuance that although Ariane 4 is attached by four brackets, Ariane 5 is not.
the countdown sequence doesn't list any either.
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
$endgroup$
add a comment |
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2 Answers
2
active
oldest
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2 Answers
2
active
oldest
votes
active
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active
oldest
votes
$begingroup$
Meet the Ariane EAP (Étage d'Accélération à Poudre, "Solid Booster Stage"):
what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
They are the business ends of the fusées d'éloignement, or separation motors, which push the SRBs away from the core after they burn out. There are four, not 8, at the bottom of the booster, and four more at the top -- all pointed generally inboard to drive the SRB casing away, but not so directly inboard as to impinge exhaust plumes on the core.
what does one call these nozzle-like protrusions when one has one's space words handy?
Those are the jupes arrière, or aft (nozzle) skirts. The rocket nozzles themselves extend beyond the skirts, through holes in the structure.
does this launch vehicle simply sit on these nozzle-like protrusions?
I believe that's correct - the entire weight of the launcher is resting on those nice flat plates.
Is there a lock down mechanism somewhere?
I would have thought so, but @Hobbes' answer suggests not.
Your still image (from T+0:04) is from a remarkably high-quality video, but it unfortunately cuts away from that camera just before the EAPs fire at T+0:06 (but not before you can see a lovely blue hydrogen-combustion shock formation in the Vulcain's plume!). Later in the video you can see the booster separation, but the sep motors aren't really visible at that distance -- the residual plume from the boosters is much brighter.
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
$endgroup$
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
add a comment |
$begingroup$
Meet the Ariane EAP (Étage d'Accélération à Poudre, "Solid Booster Stage"):
what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
They are the business ends of the fusées d'éloignement, or separation motors, which push the SRBs away from the core after they burn out. There are four, not 8, at the bottom of the booster, and four more at the top -- all pointed generally inboard to drive the SRB casing away, but not so directly inboard as to impinge exhaust plumes on the core.
what does one call these nozzle-like protrusions when one has one's space words handy?
Those are the jupes arrière, or aft (nozzle) skirts. The rocket nozzles themselves extend beyond the skirts, through holes in the structure.
does this launch vehicle simply sit on these nozzle-like protrusions?
I believe that's correct - the entire weight of the launcher is resting on those nice flat plates.
Is there a lock down mechanism somewhere?
I would have thought so, but @Hobbes' answer suggests not.
Your still image (from T+0:04) is from a remarkably high-quality video, but it unfortunately cuts away from that camera just before the EAPs fire at T+0:06 (but not before you can see a lovely blue hydrogen-combustion shock formation in the Vulcain's plume!). Later in the video you can see the booster separation, but the sep motors aren't really visible at that distance -- the residual plume from the boosters is much brighter.
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
$endgroup$
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
add a comment |
$begingroup$
Meet the Ariane EAP (Étage d'Accélération à Poudre, "Solid Booster Stage"):
what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
They are the business ends of the fusées d'éloignement, or separation motors, which push the SRBs away from the core after they burn out. There are four, not 8, at the bottom of the booster, and four more at the top -- all pointed generally inboard to drive the SRB casing away, but not so directly inboard as to impinge exhaust plumes on the core.
what does one call these nozzle-like protrusions when one has one's space words handy?
Those are the jupes arrière, or aft (nozzle) skirts. The rocket nozzles themselves extend beyond the skirts, through holes in the structure.
does this launch vehicle simply sit on these nozzle-like protrusions?
I believe that's correct - the entire weight of the launcher is resting on those nice flat plates.
Is there a lock down mechanism somewhere?
I would have thought so, but @Hobbes' answer suggests not.
Your still image (from T+0:04) is from a remarkably high-quality video, but it unfortunately cuts away from that camera just before the EAPs fire at T+0:06 (but not before you can see a lovely blue hydrogen-combustion shock formation in the Vulcain's plume!). Later in the video you can see the booster separation, but the sep motors aren't really visible at that distance -- the residual plume from the boosters is much brighter.
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
$endgroup$
Meet the Ariane EAP (Étage d'Accélération à Poudre, "Solid Booster Stage"):
what are the (presumably eight) circular spots on the external nozzle-like protrusions at the bottom of each of the (presumably solid rocket) boosters on either side of the main engine?
They are the business ends of the fusées d'éloignement, or separation motors, which push the SRBs away from the core after they burn out. There are four, not 8, at the bottom of the booster, and four more at the top -- all pointed generally inboard to drive the SRB casing away, but not so directly inboard as to impinge exhaust plumes on the core.
what does one call these nozzle-like protrusions when one has one's space words handy?
Those are the jupes arrière, or aft (nozzle) skirts. The rocket nozzles themselves extend beyond the skirts, through holes in the structure.
does this launch vehicle simply sit on these nozzle-like protrusions?
I believe that's correct - the entire weight of the launcher is resting on those nice flat plates.
Is there a lock down mechanism somewhere?
I would have thought so, but @Hobbes' answer suggests not.
Your still image (from T+0:04) is from a remarkably high-quality video, but it unfortunately cuts away from that camera just before the EAPs fire at T+0:06 (but not before you can see a lovely blue hydrogen-combustion shock formation in the Vulcain's plume!). Later in the video you can see the booster separation, but the sep motors aren't really visible at that distance -- the residual plume from the boosters is much brighter.
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
edited Aug 7 at 14:51
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
answered Aug 7 at 2:06
Russell BorogoveRussell Borogove
102k4 gold badges361 silver badges445 bronze badges
102k4 gold badges361 silver badges445 bronze badges
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
add a comment |
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
Nice, I couldn't find a picture. There was a terrible one on the ESA page, this is much better.
$endgroup$
– Organic Marble
Aug 7 at 2:23
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
$begingroup$
where did you find that image?
$endgroup$
– Hobbes
Aug 7 at 8:14
1
1
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
$begingroup$
@Hobbes b14643.de/Spacerockets_1/West_Europe/Ariane-5/Gallery/EAP.htm
$endgroup$
– Russell Borogove
Aug 7 at 14:50
add a comment |
$begingroup$
Is there a lock down mechanism somewhere?
There doesn't seem to be.
Detail of the aft skirt:
Note the lack of attachment hardware.
The page on the launch table says:
A la nuance près que si Ariane 4 est attachée par quatre crochets, Ariane 5 ne l’est pas.
With the nuance that although Ariane 4 is attached by four brackets, Ariane 5 is not.
the countdown sequence doesn't list any either.
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
$endgroup$
add a comment |
$begingroup$
Is there a lock down mechanism somewhere?
There doesn't seem to be.
Detail of the aft skirt:
Note the lack of attachment hardware.
The page on the launch table says:
A la nuance près que si Ariane 4 est attachée par quatre crochets, Ariane 5 ne l’est pas.
With the nuance that although Ariane 4 is attached by four brackets, Ariane 5 is not.
the countdown sequence doesn't list any either.
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
$endgroup$
add a comment |
$begingroup$
Is there a lock down mechanism somewhere?
There doesn't seem to be.
Detail of the aft skirt:
Note the lack of attachment hardware.
The page on the launch table says:
A la nuance près que si Ariane 4 est attachée par quatre crochets, Ariane 5 ne l’est pas.
With the nuance that although Ariane 4 is attached by four brackets, Ariane 5 is not.
the countdown sequence doesn't list any either.
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
$endgroup$
Is there a lock down mechanism somewhere?
There doesn't seem to be.
Detail of the aft skirt:
Note the lack of attachment hardware.
The page on the launch table says:
A la nuance près que si Ariane 4 est attachée par quatre crochets, Ariane 5 ne l’est pas.
With the nuance that although Ariane 4 is attached by four brackets, Ariane 5 is not.
the countdown sequence doesn't list any either.
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
answered Aug 7 at 8:12
HobbesHobbes
104k2 gold badges303 silver badges464 bronze badges
104k2 gold badges303 silver badges464 bronze badges
add a comment |
add a comment |
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