To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

Rohini (rocket family)

From Wikipedia, the free encyclopedia

Rohini is a series of sounding rockets developed by the Indian Space Research Organisation (ISRO) for meteorological and atmospheric study. These sounding rockets are capable of carrying payloads of 2 to 200 kilograms (4.4 to 440.9 lb) between altitudes of 100 to 500 kilometres (62 to 311 mi).[1] The ISRO currently uses RH-200, RH-300, RH-300 Mk-II, RH-560 Mk-II and RH-560 Mk-III rockets, which are launched from the Thumba Equatorial Rocket Launching Station (TERLS) in Thumba and the Satish Dhawan Space Center in Sriharikota.

Rohini rocket family
Rohini rocket family

Nomenclature

The rockets in the series are designated with the letters RH (for "Rohini"), followed by a number corresponding to the diameter (in millimetres) of the rocket.[2]

Series

RH-75

The RH-75, the first sounding rocket developed by India,[3] was launched from TERLS on November 20, 1967.[4] It weighed 32 kilograms (71 lb), had a diameter of 75 millimetres (3.0 in) and flew 15 times between November 1967 and September 1968.

RH-125

This rocket was launched on October 9, 1971 from Sriharikota. It was a two-stage rocket using a solid propellant, carrying a 7 kilograms (15 lb) payload to 19 kilometres (12 mi) in altitude. It flew twice between January 1970 and October 1971.

RH-200

The RH-200 has a maximum launch altitude of 70 kilometres (43 mi).[5]

RH-300

The Rh-300 is a single stage sounding rocket, derived from French Belier rocket engine technology. It has a launch altitude of 100 km (62 mi). A variant, the RH-300 Mk-II, has a maximum launch altitude of 116 kilometres (72 mi).[5]

RH-560

This two stage vehicle is derived from French Stromboli engine technology. Another variant, the RH-560 Mk-II, can reach a maximum launch altitude of 548 kilometres (341 mi).[5] The RH-560 Mk-III variant's maiden flight (the flight was successful) was 12 March 2021.[6]

Applications

The RH-200 is used for meteorological studies, the RH-300 Mk-II for upper-atmospheric studies and the RH-560 Mk-II for ionospheric studies. The RH-200 was used as the rocket for the first payload launch in India made by students of VIT University in Vellore.[7]

Rohini series of sounding rockets
Name RH 75 RH 125 RH 200/125 RH-300 RH-300 Mk II RH-300/200/200 RH-560/300 RH-560/300 Mk II
Gross mass 8 kg (18 lb) 40 kg (88 lb) 100 kg (220 lb) 300 kg (660 lb) 500 kg (1,100 lb) 500 kg (1,100 lb) 1,300 kg (2,800 lb) 1,600 kg (3,530 lb)
Height 1.50 m (4.90 ft) 2.50 m (8.20 ft) 3.60 m (11.80 ft) 4.10 m (13.40 ft) 5.90 m (19.30 ft) 8.00 m (26.20 ft) 8.40 m (27.50 ft) 9.10 m (29.80 ft)
Diameter 0.0800 m (0.2620 ft) 0.12 m (0.39 ft) 0.20 m (0.65 ft) 0.31 m (1.01 ft) 0.31 m (1.01 ft) 0.31 m (1.01 ft) 0.56 m (1.83 ft) 0.56 m (1.83 ft)
Thrust 8.00 kN (1,798 lbf) 17.00 kN (3,821 lbf) 38.00 kN (8,542 lbf) 39.00 kN (8,767 lbf) 38.00 kN (8,542 lbf) 76.00 kN (17,085 lbf) 76.00 kN (17,085 lbf)
Apogee 10 kilometres (6.2 mi) 20 kilometres (12 mi) 80 kilometres (50 mi) 100 kilometres (62 mi) 150 kilometres (93 mi) 300 kilometres (190 mi) 400 kilometres (250 mi) 500 kilometres (310 mi)
Stages 1 1 2 1 1 3 2 2
First Launch 20 November 1967 1 January 1970 1 January 1979 8 June 1987 1 November 1985 24 April 1974 16 August 1995
Payload (kg) 1 7 10 60 70 100

References

  1. ^ Subramanium, T S (16 January 2004). "Reaching out to the stars". Frontline. Archived from the original on 19 February 2010. Retrieved 10 March 2012.
  2. ^ "ISRO > FAQ". Frequently Asked Questions: ISRO. Indian Space Research Organisation.
  3. ^ Chari, Sridhar K (22 July 2006). "Sky is not the limit". The Tribune. Retrieved 10 March 2012.
  4. ^ http://www.isro.org/scripts/faq.aspx
  5. ^ a b c Venugopal, P (15 January 2010). "Ten rockets fired to study solar eclipse". The Hindu. Retrieved 11 March 2012.
  6. ^ "Launch of sounding rocket (RH-560)". 12 March 2021. Retrieved 12 March 2021.
  7. ^ "Isro launches rocket with part made by students". The Financial Express. 8 July 2010. Retrieved 25 July 2013.

This page was last edited on 13 March 2021, at 16:12
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.