ISRO General News and Updates

Varoon2

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Can we presume that these Hypersonic Vehicle tests are flight trials, or are they ground testing of various systems
 

Swesh

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Air Breathing Propulsion

air Breathing propulsionAir Breathing Propulsion provides a technological key for low cost space transportation system. They eliminate the use of oxidizer being carried by making use of the atmospheric air and there by significantly improve the payload fraction. Air breathing propulsion project is responsible for planning and execution of research, development of flight testing of Air Breathing Propulsion Systems. These involve theoretical computation and experimental evaluation of thermo structural and reactive fluid dynamics of turbo-ramjet-scramjet engines and associated technologies.

Successful flight demonstration of Scramjet mode of propulsion was cost effectively carried out with ATVD02- Scramjet Characterisation flight in 2016. Further plans are for the development of an autonomous vehicle powered by Scramjet engine capable for accelerating for a period of 250s.

HAVA - Hyper Sonic Air Breathing Vehicle with Air Integration Systems current focus of the project is on the development of critical technologies for this HAVA mission Viz. Flowduct, fuel injection struct Air intake cowl opening mechanism, Ramps fluid store and feed system, Pilot Flame Ignition System, Navigation / Guidance and Control System, Elevon/ Rudder Control System and Avionics/ Instrumentation System. Further it is planned to develop Air Breathing Powered (TBCC based Engine) TSTO vehicle
 

Swesh

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Some clearity on information

The Indian Space Research Organisation (Isro) completed the first blow down test of the newly installed Trisonic Wind Tunnel at the Vikram Sarabhai Space Centre (VSSC), the space agency’s lead rocketbuilding agency, on Thursday.

Trisonic Wind Tunnel is a system to aid aerodynamic design of rockets and re-entry spacecrafts by characterising a scaled model by evaluating
forces, moments, load distribution, unsteady pressures, acoustic levels etc

Arguing that this is a major step towards India’s increasing self-reliance in the aerospace sector, Isro said: “The tunnel has an overall length of about 160m and has a maximum cross section of 5.4m. The tunnel can be used for testing various space vehicles in three flight regimes below the
speed of sound, at the speed of sound and above the speed of sound — hence the name trisonic wind tunnel.”

It added that the tunnel can simulate flight conditions from 0.2 times the speed of sound (68 m/s) to 4 times the speed of sound (1360 m/s).

“The huge structure was built with several hundred tonnes of steel and was implemented through Tata Projects India Ltd in association with Aiolos Engineering Corporation, Canada and fully realised by industries across India, including Walchandnagar Industries, Pune, Acoustic India, Tiruchirappalli, Artson Engineering, Nashik, Summits Hygronics, Coimbatore, Hydrocare Fluid Power Systems, Bengaluru and Siemens Energy, Ahmedabad,” Isro said.

In a tweet unrelated to the wind tunnel, Isro said the space agency along with agencies from the three armed forces, jointly conducted Hypersonic vehicle trials.

“The trials achieved all required parameters and demonstrated Hypersonic vehicle capability,” Isro said, without divulging any more details of the project.
 

porky_kicker

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So, HAVA would be the base tech of an Indian HGV?
@porky_kicker
HAVA is primarily for developing TSTO ( military use could be to have TSTO modified to launch reusable X37 type systems , than entire system becomes reusable cutting costs and time )

HAVA uses scramjet engine so if required it can be used to feed into programs for developing hypersonic cruise missiles HCVs which needs a propulsion plant to reach hypersonic speeds

HGVs are generally unpowered they use the speed imparted by booster eg A RV atop a ICBM designed to glide is a HGV more or less and some HGVs might include rocket motors for powered glide

But all said and done technologies or part of technologies developed for HAVA can be used both for HCMs and HGVs
 

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