Arcas (originally "All-Purpose Rocket for Collecting Atmospheric Soundings", [1] also designated Big Boy Rocket or "PWN-6" [2] ) was the designation of an American sounding rocket, developed by the Atlantic Research Corp. (now Atlantic Richfield Company (ARCO)), Alexandria, Va. [3]
The Arcas sounding rocket is an unguided vehicle with a diameter of 4.5 inches designed to carry payloads of 12 pounds or less to heights in excess of 200,000 feet when launched from sea level. [1] [4] The Arcas has a maximum flight altitude of 52 kilometers, a takeoff thrust of 1.5 kN, a takeoff weight of 34 kilograms, and a diameter of 11 centimeters. [1] The Arcas was 2.30 m long and had a fin span of 0.33 m. [1]
Including variants, it was launched at least 1441 times between November 4, 1958, and August 9, 1991. [1] Arcas launch sites include White Sands, Vandenberg, Fort Churchill, Point Mugu, San Nicolas, Cape Canaveral LC43, Eglin, Kronogård, Kindley, McMurdo Station, Barking Sands, CELPA (Mar Chiquita), Ascension, Birdling's Flat, Wallops Island LA2, Thumba, Barbados, Keweenaw, Thule AFB, Barreira do Inferno Launch Center, Antigua, Fort Greely, Grand Turk Island, Tartagal, Fort Sherman and Primrose Lake. [1]
A 1957 Stanford Research Institute study proposed a small single-stage sounding rocket to measure high-altitude winds to determine the spread of radioactive fallout. The U.S. Office of Naval Research and the Air Force Research Center awarded Atlantic Research Corporation a contract to develop this sounding rocket, known as "Kitty" [2] [5] in January 1958. ARC designed the Arcas rocket, the first of which was ready for flight tests in late 1958. By the end of 1960, more than 400 Arcas rockets had been launched.
The Arcas was powered by a slow-burning SR45-AR-1 solid-propellant motor with an end-burning grain, generating an average thrust of 336 pounds-force (1,490 N; 152 kgf) for 30 seconds. Total impulse is 9,089 lbf⋅s (40,430 N⋅s). [4] Since the rocket diameter was larger than the nozzle diameter of the engine, the aft end of the rocket ended in a tapered "boat tail", to decrease the subsonic drag.
Arcas was launched from a tubular closed-breech launcher, which provided a faster boost by the piston action of trapping the engine gasses. The rocket was kept centered in the tube by four plastic spacers. [2]
When used for radar calibration in the 1960s, the Arcas rocket configuration consisted of a closed breech launcher, a sounding rocket, and two payload configurations, one a parachute recovery system with a DMQ-6 telemetry transmitter compatible with standard meteorological ground station receiving equipment, the other a one-meter metalized balloon for radar calibration. The Arcas characteristics for this type operation were: [6]
DMQ-6
Balloon
Rocket:
Transmitter:
A variants of the basic Arcas were the Atlantic Research PWN-6A and 6B "Kitty". [2] [5] These had a ceiling of 60 km. [5]
Another variant of the basic Arcas was the PWN-7 "Rooster". [7] [8] It had a ceiling of 65 km. [8]
The Sidewinder Arcas was a two-stage sounding rocket, consisting of a Sidewinder starting stage and an Arcas upper stage. The Sidewinder Arcas has a ceiling of 90 km, a takeoff thrust of 26 kN, a takeoff weight of 120 kg, a diameter of 130 mm and a length of 4.80 m. [9]
A higher power version of the Arcas, Super Arcas, was used extensively around the world from a wide variety of platforms on land and at sea. With a boost from a gas generator-fed launch tube, Super Arcas was capable of reaching altitudes as high as 100 km. [10] There were many time-based weather experiments launched on this rocket due to the ability of the launch tube to be rapidly turned around for another launch. One of those experiments launched one rocket per hour for 24 hours straight in Antarctica.
Another variation of Arcas was called the Boosted Arcas, which was a 2-stage rocket; one Arcas second stage and one booster. [11] [12]
Sparrow Arcas was a two stage vehicle, composed of a Sparrow first stage and an Arcas second stage. [13]
Frangible Arcas was an experimental variation launched four times between 1964 and 1965. [14] Rocket was designed to fragment after payload separation, reducing the risk to populated areas from falling spent rocket motor. [15]
The Aerobee rocket was one of the United States' most produced and productive sounding rockets. Developed by the Aerojet Corporation, the Aerobee was designed to combine the altitude and launching capability of the V-2 with the cost effectiveness and mass production of the WAC Corporal. More than 1000 Aerobees were launched between 1947 and 1985, returning vast amounts of astronomical, physical, aeronomical, and biomedical data.
A sounding rocket or rocketsonde, sometimes called a research rocket or a suborbital rocket, is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight. The rockets are used to launch instruments from 48 to 145 km above the surface of the Earth, the altitude generally between weather balloons and satellites; the maximum altitude for balloons is about 40 km and the minimum for satellites is approximately 121 km. Certain sounding rockets have an apogee between 1,000 and 1,500 km, such as the Black Brant X and XII, which is the maximum apogee of their class. Sounding rockets often use military surplus rocket motors. NASA routinely flies the Terrier Mk 70 boosted Improved Orion, lifting 270–450-kg (600–1,000-pound) payloads into the exoatmospheric region between 97 and 201 km.
The Black Brant is a family of Canadian-designed sounding rockets originally built by Bristol Aerospace, since absorbed by Magellan Aerospace in Winnipeg, Manitoba. Over 800 Black Brants of various versions have been launched since they were first produced in 1961, and the type remains one of the most popular sounding rockets. They have been repeatedly used by the Canadian Space Agency and NASA.
The Aerojet General X-8 was an unguided, spin-stabilized sounding rocket designed to launch a 150 lb (68 kg) payload to 200,000 feet (61.0 km). The X-8 was a version of the prolific Aerobee rocket family.
Loki, officially designated 76mm HEAA Rocket T220, was an American unguided anti-aircraft rocket based on the German Taifun. Like the Taifun, Loki never saw service in its original role, but later found widespread use as a sounding rocket. It was so successful in this role that several advanced versions were developed on the basic Loki layout, including the final Super Loki.
Boosted Arcas is the designation of an American sounding rocket, in which an Arcas rocket was boosted using a first stage to improve the altitude and payload.
Cajun Dart is the designation of an American sounding rocket. The Cajun Dart was used 87 times between 1964 and 1970. The Cajun rocket motor was developed from Deacon.
S-Series is a fleet of sounding rockets funded by the Japan Aerospace Exploration Agency (JAXA) that have been in service since the late 1960s. Manufactured by IHI Aerospace and operated by the Institute of Space and Astronautical Science (ISAS). The nomenclature of the S-Series rockets is the number of "S"s indicates the number of stages, and the following number details the diameter of the craft in millimeters. For example, the S-310 is a single stage rocket with a diameter of 310 mm.
The Nike-Cajun was a two-stage sounding rocket built by combining a Nike base stage with a Cajun upper stage. The Nike-Cajun was known as a CAN for Cajun And Nike. The Cajun was developed from the Deacon rocket. It retained the external size, shape and configuration of the Deacon but had 36 percent greater impulse than the Deacon due to improved propellant. It was launched 714 times between 1956 and 1976 and was the most frequently used sounding rocket of the western world. The Nike Cajun had a launch weight of 698 kg (1538 lb), a payload of 23 kg (51 lb), a launch thrust of 246 kN (55,300 lbf) and a maximum altitude of 120 km (394,000 ft). It had a diameter of 42 cm and a length of 7.70 m. The maximum speed of the Nike-Cajun was 6,760 km/h.
Romanian Cosmonautics and Aeronautics Association, also known as ARCAspace, is an aerospace company based in Râmnicu Vâlcea, Romania. It builds rockets, high-altitude balloons, and unmanned aerial vehicles. It was founded in 1999 as a non-governmental organization in Romania by the Romanian engineer and entrepreneur Dumitru Popescu and other rocket and aeronautics enthusiasts. Since then, ARCA has launched two stratospheric rockets and four large-scale stratospheric balloons including a cluster balloon. It was awarded two governmental contracts with the Romanian government and one contract with the European Space Agency. ARCASpace is currently developing several rocket systems, both orbital and suborbital, under the EcoRocket program. These vehicles include the CER rocket systems, the EcoRocket Demonstrator, Nano, 5 & Heavy, and the A1 strategic anti-ballistic interceptor. ARCA has yet to launch a vehicle above the Karman line, or sent a payload to orbit, with the majority of their projects having been abandoned due to various reasons, often including financial or regulatory constraints.
Sonda is a family of Brazilian-built sounding rockets which serves as an R&D path to the VLS orbital rocket. Launches started in 1965 and continue to this day. Launch sites include Wallops Island, Andoya, Kiruna, Natal, Alcântara, Cassino and SvalRak.
VSB-30 - "Veículo de Sondagem Booster – 30" or "Foguete Suborbital VSB-30" is the designation of a Brazilian sounding rocket, which replaced the Skylark rocket at Esrange.
Haas was a family of rocket space launchers developed by ARCAspace for the Google Lunar X Prize competition and for their national crewed space program. As of 2020 no rocket has been launched, the planned rocket types changed significantly over time.
The Terrier Orion sounding rocket is a combination of the Terrier booster rocket with the Orion rocket used as a second stage. This spin stabilized configuration is most often used by the Goddard Space Flight Center, who operate out of the Wallops Flight Facility for sounding rocket operations. The system supports payloads ranging from 200 to 800 pounds, and is capable of achieving altitudes as high as 120 miles (200 km), but at least 50 miles (80 km), depending on payload size.
Terasca, or Terrier-ASROC-Cajun, was an American three-stage sounding rocket developed and launched by the United States Navy. Derived from a combination of the Terrier, ASROC and Cajun rockets, three launches were attempted during 1959, but only one was successful.
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 between altitudes of 100 to 500 kilometres. The ISRO currently uses RH-200, 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 Centre in Sriharikota.
The Terrier Malemute is a two-stage American sounding rocket typically used for smaller payloads. Both the Terrier first stage and the Malemute second stage use solid propellant. The Terrier burns for approximately 5.2 seconds, and the Malemute burns for approximately 21.5 seconds. The first stage booster consists of a surplus Navy Terrier MK 12 Mod 1 rocket motor with four 0.22 m2 (340 sq in) fin panels arranged in a cruciform configuration. The Terrier rocket booster has a diameter of 460 mm (18 in). The second stage solid rocket is a Thiokol Malemute TU-758 rocket motor, specially designed for high altitude research rocket applications. Apogee is approximately 400 km (220 nmi) for a 230 kg (510 lb) payload or 700 km (380 nmi) for a 41 kg (90 lb) payload. For a payload weight of 200 lb (91 kg), the acceleration during the boost phase is 26 g. Its first flight was on November 11, 1974, from Barking Sands. Other launch sites have included Poker Flat, Wallops Island and Fort Yukon, Alaska.
The Nike stage or Nike booster, a solid fuel rocket motor, was created by Hercules Aerospace for the Nike Ajax (M5) Nike Hercules (M5E1). It was developed for use as the first stage of the Nike Ajax and Nike Hercules missiles as part of Project Nike.
Zero 2 Infinity is a private Spanish company developing high-altitude balloons intended to provide access to near space and low Earth orbit using a balloon-borne pod and a balloon-borne launcher.
The Centauro series is a family of Argentinian solid-fuel sounding rockets developed by the Instituto de Investigaciones Aeronauticas y Espaciales (IIAE). This family includes Alfa, Beta, and Gamma Centauro.