The first Indian SSLV (Small Satellite Launch Vehicle, see: https://www.isro.gov.in/launcher/sslv-d1-eos-02-mission , and https://en.wikipedia.org/wiki/Small..._Launch_Vehicle ) suffered a strange anomaly during its maiden launch yesterday, injecting its two satellites into a 356 km x 76 km orbit, instead of a 356 km circular orbit (see: https://www.youtube.com/watch?v=Jhnz4vtoTvM ), and:

This Space.Com report (see: https://www.space.com/india-sslv-rocket-first-launch ) has more details. Its first three solid propellant stages all performed correctly, but its VTM (Velocity Trimming Module, a small hypergolic liquid propellant fourth stage) fired for only 0.1 seconds instead of the planned 20 seconds. The satellites separated properly, but re-entered and burned up at their first 76 km (just 47 miles) perigee pass. However:

The ISRO (the Indian Space Research Organisation) personnel aren't upset, as the SSLV achieved nearly 100% of its test objectives. (This flight was like that of the first Titan IIIA, where a minor, easily-fixable problem [a Transtage propellant pressurizing gas leak in the Titan IIIA's third and final stage], and a faulty sensor in the SSLV's VTM, was all that prevented achieving orbit.) The SSLV is a simplified, 2 m diameter, all-solid propellant derivative of the four-stage, 2.8 m diameter PSLV-CA ("Polar Satellite Launch Vehicle--Core Alone" version, see: https://en.wikipedia.org/wiki/Polar..._Launch_Vehicle [with no strap-on boosters]), which has hypergolic liquid propellant second and fourth stages. An SSLV flying scale model could use the Quest Aerospace Big Betty kit as a "kit-bashing" basis.

__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
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http://www.lulu.com/product/cd/what...of-2%29/6122050
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All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR

My scratch built version of ISRO's first launch vehicle.

Attached Thumbnails

 

Nice!

Mostly vellum paper construction?

__________________
-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President

Wolf,

No, regular tubes. I think I special ordered the correct sizes from Semroc. It was many years ago, when Emma was still in grade school. She was assigned to do an oral report on India and chose to do it on the Indian space program. I built the model so she would have something to show.

I love the ISRO rockets because they have the greatest graphics. I'm half convinced they secretly consult Lee Piester on the roll patterns, LOL. The graphics on the model are all wraps I produced on my computer and printed on full size label paper. Conduits are styrene, nosecone is a slightly modified stanard BMS item, transition is out of cardstock. Really a fun little project.

Steve

I've always liked India's (SSTC [later renamed ISRO]) garish rocket paint schemes. The one you modeled--the SLV-3, which was similar, but not identical, in size and proportions to the LTV Scout, but was developed independently by ISRO's field centers and Indian aerospace companies (nearly all of its materials and components were developed in India)--has always been my favorite ISRO space launch vehicle. If you offered a kit of it (Annette Sostarich, whose "Space Crafter" store is on Ebay, makes ^excellent^ 3D printed model rocket plastic nose cones [with molded-in "tie-on" crosses--as in Centuri's #13 & #16 size plastic nose cones], transition sections, and fin units, see: https://www.ebay.com/str/spacecraft...57.m570.l113337 !), I would buy several SLV-3 scale kits.

__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR

Strong resemblance to an LTV Scout . . .

Dave F.

Supposedly, some of the Indian designers had access to the Scout design. The motors were 100% "home grown," but they definitely had Scout in mind.

SLV3 is also the first significant example of an SLV being turned into a ballistic missile (instead of the other way around, which is quite common). Variants of the first stage of the SLV3 went into the Agni 1 and Agni II missiles.

Jeepers! Where were you guys when Emma was doing her report, LOL? Seriously though, thanks for the interesting info.

Maybe they saw SNOAR News . . .

Dave F.

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