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Klaas Willem Jonker
(Wilko)
† April 30, 2018

On Monday 30 April 2018, Wilko Jonker died after a long illness at the age of 58. He leaves behind a wife and two children. The Dutch military aviation and plastic modeling were his hobby and on this website he shared all the knowledge he has collected over the years. His hobby has been able to distract him from the persistent disease in his body until the last week of his life. The contacts with other hobbyists were a major support for him.

This website will be maintained by different people for as long as possible, so that other enthusiasts can continue to benefit from extensive content.

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Sunday, 25 August 2019 05:19

MBB Bolkow Bo-105CB

History

The development of the Bo105 started in 1961 with the Bo103 which first flew in September 1961.

A larger version of the Bo103 was initially designated as Bo104, but this was soon followed by the Bo105.

The prototype of the Bo105 was equipped with two Allison T-63 turbine engines and a conventional rotor system. However, this helicopter experienced such resonance that it was destroyed.
The second prototype first flew in February 1967 and had a four-bladed rotor with solid fiberglass reinforced blades, which were later also applied to the production version.
The third prototype was equipped with two MAN turbine engines of 375 horsepower and first flew on December 20, 1967.

In mid-October 1970 received the Bo105 its type-certification of the German aviation authorities.
In April 1972 was also the FAA (Federal Aviation Administration) certification is obtained, so the type could also be exported to the USA.

The Bo105C was developed in 1972 and chosen by the German Ministry of Defence as a light observation helicopter. In 1977 100 examples were purchased while 112 examples of a special anti-tank version, designated as Bo105 PAH-1, equipped with Euro Missile HOT missiles, were purchased for the German army.

The Bo105CB with two powerful 250-C20B turbine engines Alison, was developed in 1976.
This type was extended by approximately 25 cm in response to American demand and released as Bo105CBS. [in the United States known as B0105 Twin jet]
A version of the Bo105CBS the B0-105LS, equipped with more powerful Allison 250-C28C had a higher take-off weight and appeared in 1984.

Production ended in 2001 after more than 1400 examples had been built.

Versions.

Bo105A:
first, civil production version with two Allison 250-C18 turbine engines.
Bo105C:
initial version originating from 1972 with two Allison 250-C20 turbine engines.
Bo105CB:
(military) observation and utility version from 1976 with two Allison 250-C20B turbine engines.
  • Bo 105CBS: extended version for medevac duties.
  • Bo 105CBS-5: SAR version.
Bo105D:
offshore version for the UK.
Bo105LS A1:
developed in 1984; extended fuselage with two Allison 250-C28C turbine engines.
  • Bo105LS A3: released higher take-off weight of 2600 kg.
  • Bo105LS A3 "Superlifter": Released in 1995 with a maximum take-off weight of 2850 kg.
Bo105P / PAH-1:
German army designation (PAH=Panzerabwehrhubschrauber). Anti tank version with wire guided HOT ATGMs rockets.
  • Bo105P/PAH-1A1: improved version with six HOT tubes.
  • Bo105P/PAH-1 Phase 2: proposal of night attack version for German army.
  • Bo105P/BSH: proposal of an escort version for German army equipped with Stinger air-to-air missiles.
Bo105M:
Light transport and utility version for German army, also referred to as "VBH" (Verbindungshubschrauber).
Bo105/Ophelia:
Test version for ‘mast-mounted sight’.
Bo105ATH:
Anti-tank version for Spanish army.
  • Bo105GSH: Armed scout for Spanish army.
Bo105LOH:
Observation version for Spanish army.
Bo105MSS:
Maritime version with search radar.
NBo105:
123 examples licence built between 1976-2011; original designated as NBo105 CB.
NBo105S:
extended version.
Bo105 Executaire:
Extended version (14,5 cm) built by Boeing-Vertol and Carson Helicopters for the US market.
Bo105E-4:
12 revised and upgraded Bo105P for Albania in 2006. Improved performance and avionica.
Bo105 KLH:
licence version of CBS-5 built by KLH for the Korean army.
Bo106:
Never produced enlarged version for seven passengers.

 

Technical information
Dimensions:
Length with rotor 11,84 m Rotor diameter: 9,84 m
Height: 3 m Tail Rotor diameter: - m2
Weights:
Empty weight: 1276 kg Full weight: 2500 kg
Performances:
Max. speed: 270 km/hr Cruising speed: 209 km/hr
Range: 660 km Service ceiling: 5180 m
Miscellaneous:
Crew: Two men
Engine type: Two Allison 250-C20B rated 313 kW each
Notes