Mission type | Test flight |
---|---|
Operator | ISRO |
Mission duration | 12 minutes |
Spacecraft properties | |
Spacecraft type | Spaceplane |
Manufacturer | ISRO |
Dimensions | 6.5 m x 3.5 m |
Start of mission | |
Launch date | 23 May 2016 [1] |
Rocket | HS9 |
Launch site | Satish Dhawan Space Centre First Launch Pad |
End of mission | |
Landing date | 23 May 2016 |
Landing site | Splashdown target on the Bay of Bengal |
Reusable Launch Vehicle Hypersonic Flight Experiment or RLV HEX was the first test flight in the RLV Technology Demonstration Programme of the Indian Space Research Organisation (ISRO). The demonstration trials will pave the way for a two-stage-to-orbit (TSTO) fully re-usable launch vehicle. HEX was successfully conducted on 23 May 2016. [2] [3] [4]
In 2009, an airframe engineering model, axisymmetric proto nose cap after graphitisation (C-C) and slow burn rate propellant were completed. Aerodynamic characterization of technology demonstration vehicle was completed at National Aerospace Laboratories (NAL), Vikram Sarabhai Space Centre (VSSC) and Indian Institute of Space Science and Technology (IIST). Computational flow simulation and supersonic combustion in ground testing were also completed.
RLV-TD consists of a fuselage (body), a nose cap, double delta wings and twin vertical rudders. It has active control surfaces called Elevons and Rudders. [4] Apart from the twin rudders it is similar in shape and operation to a small Space Shuttle Orbiter.
TDV uses 600 or so heat resistant silica tiles and Flexible External Insulation, nose-cap is made out Carbon-Carbon composite with SiC coating. The leading edges of twin rudders are Inconel-718, wing leading edges of 15CDV6. [5] [6] [7] [8] [9] [10]
HEX was the first test flight of a reusable launch vehicle developed by India. The test flight objectives included: [11]
The Hypersonic Flight Experiment, or HEX, was the first test-flight in the RLV Technology Demonstration Programme. The RLV-TD vehicle was launched from the first launchpad of Satish Dhawan Space Centre on 23 May 2016 at 7:00 AM local time, on board an HS9 rocket booster. [12]
After a successful lift that lasted 91.1 seconds to a height of about 56 km, the RLV-TD separated from the 9-ton HS9 booster and further ascended to a height of about 65 km. The RLV-TD then began its descent at about Mach 5 (five times the speed of sound). The vehicle's navigation, guidance and control systems accurately steered the vehicle during this phase for a controlled splashdown down to the defined landing spot over the Bay of Bengal, at a distance of about 450 km from Sriharikota, thereby fulfilling its mission objectives.
The vehicle was tracked during its flight from ground stations at Sriharikota and a shipborne terminal. The total flight duration from launch to splashdown lasted about 773.6 seconds. [13] The unit was not planned to be recovered. [14] [15] ISRO plans to construct an airstrip greater than 4 km long in Sriharikota island in the "near future". [16] Critical technologies such as autonomous navigation, guidance & control, reusable thermal protection system, and descent mission management were validated in this flight.
A reusable launch vehicle has parts that can be recovered and reflown, while carrying payloads from the surface to outer space. Rocket stages are the most common launch vehicle parts aimed for reuse. Smaller parts such as rocket engines and boosters can also be reused, though reusable spacecraft may be launched on top of an expendable launch vehicle. Reusable launch vehicles do not need to make these parts for each launch, therefore reducing its launch cost significantly. However, these benefits are diminished by the cost of recovery and refurbishment.
A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplanes tend to be more similar to conventional spacecraft, while sub-orbital spaceplanes tend to be more similar to fixed-wing aircraft. All spaceplanes to date have been rocket-powered but then landed as unpowered gliders.
The Lockheed Martin X-33 was a proposed uncrewed, sub-scale technology demonstrator suborbital spaceplane that was developed for a period in the 1990s. The X-33 was a technology demonstrator for the VentureStar orbital spaceplane, which was planned to be a next-generation, commercially operated reusable launch vehicle. The X-33 would flight-test a range of technologies that NASA believed it needed for single-stage-to-orbit reusable launch vehicles, such as metallic thermal protection systems, composite cryogenic fuel tanks for liquid hydrogen, the aerospike engine, autonomous (uncrewed) flight control, rapid flight turn-around times through streamlined operations, and its lifting body aerodynamics.
The Indian Space Research Organisation is the national space agency of India, headquartered in Bangalore, Karnataka. Operating under the Department of Space (DOS), ISRO is India's primary agency for performing tasks related to space-based applications, space exploration and the development of related technologies. It is one of six government space agencies in the world which possess full launch capabilities, deploy cryogenic engines, launch extraterrestrial missions and operate large fleets of artificial satellites.
Hopper was a proposed European Space Agency (ESA) orbital spaceplane and reusable launch vehicle. The Hopper was a FESTIP system study design.
Satish Dhawan Space Centre - SDSC is a rocket launch centre (spaceport) operated by Indian Space Research Organisation (ISRO). It is located in Sriharikota, Tirupati district of Andhra Pradesh. Sriharikota Range was renamed in 2002 after ISRO's former chairman Satish Dhawan.
The DARPA Falcon Project is a two-part joint project between the Defense Advanced Research Projects Agency (DARPA) and the United States Air Force (USAF) and is part of Prompt Global Strike. One part of the program aims to develop a reusable, rapid-strike Hypersonic Weapon System (HWS), now retitled the Hypersonic Cruise Vehicle (HCV), and the other is for the development of a launch system capable of accelerating an HCV to cruise speeds, as well as launching small satellites into Earth orbit. This two-part program was announced in 2003 and continued into 2006.
The Intermediate eXperimental Vehicle (IXV) is a European Space Agency (ESA) experimental suborbital re-entry vehicle. It was developed to serve as a prototype lifting body orbital return vehicle to validate the ESA's work in the field of reusable orbital return vehicles.
Scramjet programs refers to research and testing programs for the development of supersonic combustion ramjets, known as scramjets. This list provides a short overview of national and international collaborations, and civilian and military programs. The USA, Russia, India, and China (2014), have succeeded at developing scramjet technologies.
Vertical takeoff, vertical landing (VTVL) is a form of takeoff and landing for rockets. Multiple VTVL craft have flown. The most widely known and commercially successful VTVL rocket is SpaceX's Falcon 9 first stage.
The Space Capsule Recovery Experiment is an Indian experimental spacecraft which was launched at 03:53 UTC on January 10, 2007, from Sriharikota by the Indian Space Research Organisation (ISRO). The launch was conducted using the C7 launch of the PSLV rocket, along with three other satellites. It remained in orbit for 12 days before re-entering the Earth's atmosphere and splashing down into the Bay of Bengal at 04:16 UTC on January 22.
Avatar is a concept study for a robotic single-stage reusable spaceplane capable of horizontal takeoff and landing, by India's Defence Research and Development Organisation. The mission concept is for low cost military and commercial satellite space launches.
Gaganyaan is an Indian crewed orbital spacecraft intended to be the formative spacecraft of the Indian Human Spaceflight Programme. The spacecraft is being designed to carry three people, and a planned upgraded version will be equipped with rendezvous and docking capability. In its maiden crewed mission, Indian Space Research Organisation (ISRO)'s largely autonomous 5.3 metric tonnes capsule will orbit the Earth at 400 km altitude for up to seven days with a two or three-person crew on board. The first crewed mission was originally planned to be launched on ISRO's LVM3 in December 2021, but this has since been delayed due to lockdown to no earlier than 2024.
Reusable Launch Vehicle–Technology Demonstration Programme is a series of technology demonstration missions that has been conceived by the Indian Space Research Organisation (ISRO) as a first step towards realising a Two Stage To Orbit (TSTO) re-usable launch vehicle.
The DARPA XS-1 was an experimental spaceplane/booster with the planned capability to deliver small satellites into orbit for the U.S. Military. It was reported to be designed to be reusable as frequently as once a day, with a stated goal of doing so for 10 days straight. The XS-1 was intended to directly replace the first stage of a multistage rocket by taking off vertically and flying to hypersonic speed and high suborbital altitude, enabling one or more expendable upper stages to separate and deploy a payload into low Earth orbit. The XS-1 would then return to Earth, where it could ostensibly be serviced fast enough to repeat the process at least once every 24 hours.
The Crew Module Atmospheric Re-entry Experiment (CARE) is an experimental test vehicle for the Indian Space Research Organisation's future ISRO orbital vehicle called Gaganyaan. It was launched successfully on 18 December 2014 from the Second Launch Pad of the Satish Dhawan Space Centre, by a LVM3 designated by ISRO as the LVM 3X CARE mission. Total cost of mission was ₹155 crore. Cost of launch vehicle and CARE module was ₹140 crore and ₹15 crore.
The SCE-200, also referred as Semi-Cryogenic Engine, is a 2 MN thrust class liquid rocket engine, being developed to power India's future heavy and super heavy lift launch vehicles. It is being developed by Liquid Propulsion Systems Centre of Indian Space Research Organisation and is expected to have first flight in 2020s.
The Programme for Reusable In-orbit Demonstrator in Europe (PRIDE) is an Italian Space Agency programme that aims to develop a reusable robotic spaceplane named Space Rider in collaboration with the European Space Agency.
RLV-TD is India's first uncrewed flying testbed developed for the Indian Space Research Organisation (ISRO)'s Reusable Launch Vehicle Technology Demonstration Programme. It is a scaled down prototype of an eventual two-stage-to-orbit (TSTO) reusable launch vehicle.
Reusable Launch Vehicle Landing Experiment (RLV-LEX) was the second test flight in the RLV Technology Demonstration Programme of the Indian Space Research Organisation (ISRO). The demonstration trials will pave the way for the two-stage-to-orbit (TSTO) fully re-usable launch vehicle. LEX was successfully conducted on 2 April 2023.