Space Shuttle (scratch build)

The Rocketry Forum

Help Support The Rocketry Forum:

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
Fin aligned and epoxied to the boom. I will give them a coat of high temp black spray paint... I'm skeptical how well the ones closer to the SRBs will fair.
IMG_20210221_141018429.jpg
IMG_20210221_144542661.jpg
IMG_20210221_144638494.jpg
IMG_20210221_144739167.jpg
 

GlenP

Well-Known Member
Joined
Oct 4, 2014
Messages
2,235
Reaction score
527
After the first launch, just cover up the scorched areas on the fins with some Al dryer duct tape for the next launch?
 

BABAR

Builds Rockets for NASA
TRF Lifetime Supporter
TRF Supporter
Joined
Aug 27, 2011
Messages
8,655
Reaction score
3,364
After the first launch, just cover up the scorched areas on the fins with some Al dryer duct tape for the next launch?
Move that up a bit, put the tape on a BEFORE the launch.
 

BABAR

Builds Rockets for NASA
TRF Lifetime Supporter
TRF Supporter
Joined
Aug 27, 2011
Messages
8,655
Reaction score
3,364
Took both of your advice, now just need to get a can of high heat black and this shuttle should be ready to fly.
View attachment 454948
Okay, regarding high heat paint, I think your plan is right on. People talk about using high heat paint to “protect” a surface. I’m not sure it really does that. I think high heat paint protects ITSELF, regular paint would burn or flake off.

but I don’t know (and doubt) that hight heat paint does much to protect what’s UNDERNEATH it. I wouldbe happy to be wrong, I bring this up because I am working on two stage mod of Estes Indicator, which has a plastic transition and probable split fins. The sustainer nozzle is going to briefly jet the forward end of the booster. I’m am thinking your plan might protect the fins and the plastic.
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
Finally completed a swing test tonight. The full assembly was very stable. Hoping to have a maiden flight tomorrow. Fingers crossed.
IMG_20210423_201315029.jpg
IMG_20210423_201341603.jpg
IMG_20210423_201401742.jpg
 

Raptor 2

Raptor2
Joined
Dec 12, 2020
Messages
85
Reaction score
54
Location
Redwater AB Canada

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
Are the decals on the SRBs one large piece? if so you are a master at putting them on. I have lots of trouble putting on large sheets that wrap around the tubes.
I split the decals into many pieces 😁 a single wrap was definitely outside of my capability
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
The space shuttle Atlantis had a successful maiden flight yesterday. All three motors lit successfully (B6-0s in the SRBs and a D12-3 in the ET). SRB separation was flawless at around 33ft (the JL Alt 2 logged that as the ejection alt), and the orbiter separated at ET motor burnout (I'm guessing drag separation) somewhere around 100ft. The entire vehicle pitched over almost like the real thing, due to a combination of SRB moment and orbiter drag. The ET logged a max altitude of 186ft. Unfortunately my SLR was only able to capture the moment right after ignition, but in the picture it's interesting to see the tail boom deflecting significantly just from the motor exhaust. The ET and orbiter delay parachutes both functioned beautifully. We did get a rough video from a distance, but hard to see all the events. Everything was recovered and will be ready to fly again!
IMG_5309.jpg
IMG_5310~2.JPG
IMG_5316~2.JPG
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
I also took a look at the tail boom fin condition considering they were in the line of fire for the SRBs. @GlenP and @BABAR I'm happy to report that aside from some exhaust residue the combination of aluminum tape and high temp black spray paint held up great!
IMG_20210425_104155236.jpg
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
The Space Shuttle Atlantis suffered an inflight anomally during yesterdays launch. Thankfully all those on board the Orbiter Vehicle were able to glide return safely to the landing runway, and SRBs were recovered in tact down range. The External Tank was destroyed on impact, however, and will require rebuilding.

According to the JL Altimeter2 on board, the vehicle achieved about 60ft of altitude. The only difference between this flight and the previous were use of C6-0s in the SRBs instead of B6-0s. The added off center thrust and resulting velocity induced drag of the orbiter vehicle forced the whole shuttle to pitch over quite a bit more than the maiden flight. I plan to salvage what I can of the ET. If this does fly again, I will need to add some pitch correction to the tail boom fins.

Ready for flight:
IMG_5453.JPG

Clean ignition and liftoff:
IMG_5456_2.JPGIMG_5457~2.jpg

The pitch over (second picture is zoomed in):
IMG_5458.JPG
IMG_5460_2.JPG

Impact and Landing Site (ET smoldering to the left, Shuttle safe on the runway to the Right):
Screenshot_20210517-084209.png

ET Puzzle Pieces:
IMG_20210516_205236547.jpg
 

Antares JS

Professional Amateur
Joined
Mar 5, 2020
Messages
1,093
Reaction score
1,252
Location
Eastern Shore, VA
The Space Shuttle Atlantis suffered an inflight anomally during yesterdays launch. Thankfully all those on board the Orbiter Vehicle were able to glide return safely to the landing runway, and SRBs were recovered in tact down range. The External Tank was destroyed on impact, however, and will require rebuilding.

According to the JL Altimeter2 on board, the vehicle achieved about 60ft of altitude. The only difference between this flight and the previous were use of C6-0s in the SRBs instead of B6-0s. The added off center thrust and resulting velocity induced drag of the orbiter vehicle forced the whole shuttle to pitch over quite a bit more than the maiden flight. I plan to salvage what I can of the ET. If this does fly again, I will need to add some pitch correction to the tail boom fins.

Ready for flight:
View attachment 464599

Clean ignition and liftoff:
View attachment 464600View attachment 464601

The pitch over (second picture is zoomed in):
View attachment 464602
View attachment 464603

Impact and Landing Site (ET smoldering to the left, Shuttle safe on the runway to the Right):
View attachment 464605

ET Puzzle Pieces:
View attachment 464604
On the bright side, a destroyed ET makes for a more accurate scale flight. :p
 

Charles_McG

Ciderwright
Joined
Sep 12, 2013
Messages
2,904
Reaction score
962
Location
SE Wisconsin
I've been considering spring or elastic tensioned elevator control for my upscale Centuri Hummingbird. I have it in my head that I should be able to attach a rubber band to that back elevator so that the deflection decreases with the force it's exerting. So that as the airspeed goes up, the elevator deflect goes down, and I get a constant corrective force. It looks like you could use something similar.

Of course, with my luck, I'm thinking about it backwards, and with increasing airspeed I want MORE deflection to offset the lift from the wings.
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
I've been considering spring or elastic tensioned elevator control for my upscale Centuri Hummingbird. I have it in my head that I should be able to attach a rubber band to that back elevator so that the deflection decreases with the force it's exerting. So that as the airspeed goes up, the elevator deflect goes down, and I get a constant corrective force. It looks like you could use something similar.

Of course, with my luck, I'm thinking about it backwards, and with increasing airspeed I want MORE deflection to offset the lift from the wings.
You certainly have my gears turning @Charles_McG I will have to consider some sort of "dynamic" elevators. But I agree with you last assertation, more airspeed = need for more deflection.

For anyone that followed by Falcon Heavy Build/Crash/Rebuild, you may not know my position on spilt milk, but you do know I don't cry over wrecked rockets. The Shuttle ET is a paint job and new printed nose cone away from attempting its next flight (with some sort of pitch correction). I canabalized the mount hooks from the severed half of the ET and got them adhered to left over tube from the original build.

IMG_20210517_192520387.jpgIMG_20210517_192534031.jpg
IMG_20210517_192552572.jpgIMG_20210517_192731417.jpg
IMG_20210517_231117996.jpg
 

mjennings

Well-Known Member
Joined
Jan 18, 2009
Messages
1,729
Reaction score
85
Bummer on the crash, but awesome pics.
Would adding length to the fins opposite the shuttle offset it's drag some. Or adding a box fin side between the 2 tank side fins. Both likely a lot easier than a dynamic response solution.
 

GlenP

Well-Known Member
Joined
Oct 4, 2014
Messages
2,235
Reaction score
527
alternately, there might be away to offset the thrust vector to compensate for the off-center weight (and drag) distribution,

but I cant think of anything.
 

hermanjc

Well-Known Member
Joined
Jul 22, 2014
Messages
159
Reaction score
306
Location
Hudson, MA
alternately, there might be away to offset the thrust vector to compensate for the off-center weight (and drag) distribution,

but I cant think of anything.
Canting the motors in the SRBs would be a solution, however given the motor size relative to the SRB body tubes and my desire for scale appearance led me down the curved trajectory path.
 

Latest posts

Top