Various Grokhovski Projects

[hesham]

My dears,

these aircraft wasn't in the book of russian:
Grokhovski GN-6 single seat glider.
GN-7 two seat glider.

- There is anther mystery aircraft to me ; Grokhovski G-34 ramming fighter project,do you have any idea about it ?.

 

[hesham]

Hi,


I find that beautiful site,which spoke about early artist drawings to G-26 and G-38,
also amazing research aircraft,with new idea,also two new dreams;


http://epizodsspace.no-ip.org/bibl/tm/1938/8-9/sam-gryad.html
http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=ar&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fepizodsspace.no-ip.org%2Fbibl%2Ftm%2F1938%2F8-9%2Fsam-gryad.html

 

[hesham]

The early design to Grokhovski G-38;


http://space-memorial.narod.ru/des2/ivensen.html
http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=ar&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fspace-memorial.narod.ru%2Fdes2%2Fivensen.html

 

[hesham]

The early design to Grokhovski G-38;


http://space-memorial.narod.ru/des2/ivensen.html
http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=ar&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fspace-memorial.narod.ru%2Fdes2%2Fivensen.html

Also the early Grokhovski G-38 3-view drawing.


http://ram-home.com/ram-old/g-38.html

 

[hesham]

Hi,


I find that beautiful site,which spoke about early artist drawings to G-26 and G-38,
also amazing research aircraft,with new idea,also two new dreams;


http://epizodsspace.no-ip.org/bibl/tm/1938/8-9/sam-gryad.html
http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=ar&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fepizodsspace.no-ip.org%2Fbibl%2Ftm%2F1938%2F8-9%2Fsam-gryad.html

By the way,

it was a research aircraft,not missile;


Flying projectile driven centrifugal wheels.At the rear of the projectile visible belt hole.These holes are the rudder control.Closing and opening them, you can adjust the speed flow of air over the aircraft, and change
the direction of flight.

 

[lippischh]

Hi guy im very intrested to know more about those projects, especially that research aircraft with centrifugal wheels or so....

regards

 

[Jemiba]

I would think, that "centrifugal wheels" means some kind of jet engine
with a centrifugal compressor ?

 

[hesham]

Here is the same article about the strange Grokhovski fighter project.

 

[Cy-27]

A couple of new Grokhovski types to add, along with notes on the G-38 mentioned earlier. No firm sources as they are all pre-1998. Could have been from a Vaclav Nemecek book Soviet Aircraft since 1918 (Willow) but not sure.

More details on each were recorded and are available if necessary...

Grokhovski G-38
Experimental Multirole Military Aeroplane

The G-38 wasalso known as the LK-2 (Light Cruiser) and was multirole aircraft project originally penned by P.L.Grokhovski and P.A.Ivensen . This 'Light Cruiser' was initiated by P.L.Grokhovski in 1934. General layout of this clean twin-tail monoplane was developed by V.F.Rentel (leading designer). Aircraft of mixed design (mostly wood, crew cabin - metal, control skin - fabric) had retractable landing gear and (originally) had wing span 28m and accommodation of five crew members. But with chosen engines it could not challenge even contemporary fighters. 2 x Gnome-Rhone K-14krsd engines.

Grokhovski G-39 Cucaracha
Experimental Fighter

In 1933 team lead by P.I.Grokhovski started project of unusual tailless aircraft. It was not the first proposal, but the first (and only) such aircraft of the Ostechbureau to be built. Following general concept of P.I.Grokhovski (patented February 25, 1935), it was not a pure experimental machine, but a fighter prototype. One of very uncommon appearance and unusual armament. It was a specialized ramming fighter. First, it supposed to carry a pneumatic gun in the long nose boom. This boom could be also used to tear holes in enemy Zeppelins and blimps. Two steel wires running from the nose boom to the wing tips to cut tail surfaces of the enemy aircraft. If wire fails, leading edges of the wing carried steel blades to serve same goal. It also had a most unusual rotating powerplant had to provide the G-39 with vertical takeoff. The concept was patented by P.I.Grokhovski as "Installation of the powerplant in the central section of the fuselage". Engine was a 100 hp Mikulin M-11.

Grokhovski G-61
Paratrooper Transport

Article 61 was a paratroop carrying modification of a Polikarpov R-5 biplane. Light plywood boxes were installed under the aircraft lower wing, providing room for 14 combat ready paratroopers (fifteenth paratrooper was seated in navigators' cockpit). On December 8, 1936 G-61 was flown by Grokhovski himself with 14 factory volunteers (!). Single M-17 engine.

 

[Cy-27]

Grokhovski G-61 paratrooper transport image (possibly from Shavrov book?)

 

[Stargazer]

This forum has a lot more on Grokhovskii's projects. Check these out:

• G-26 high speed aircraft
  http://www.secretprojects.co.uk/forum/index.php/topic,9236.0
  
• G-31
  http://www.secretprojects.co.uk/forum/index.php/topic,10100.msg95727.html#msg95727
  
• G-37 carrier-vehicle (ULK) and PTG suspended tankette
  http://www.secretprojects.co.uk/forum/index.php/topic,724.msg51841.html#msg51841
  
• G-38 / LK-2
  http://www.secretprojects.co.uk/forum/index.php/topic,7951.msg70354.html#msg70354
  
• G-39 Kukaracha
  http://www.secretprojects.co.uk/forum/index.php/topic,3667.msg28821.html#msg28821
  
• G-40 cargo parachute-type
  http://www.secretprojects.co.uk/forum/index.php/topic,13952.0
  
• G-52
  http://www.secretprojects.co.uk/forum/index.php/topic,7951.msg79285.html#msg79285
  
• G-63
  http://www.secretprojects.co.uk/forum/index.php/topic,10100.msg95727.html#msg95727
  
• Early WIG Project of 1932
  http://www.secretprojects.co.uk/forum/index.php/topic,17627.0
  
• G-LK flying wing
  http://www.secretprojects.co.uk/forum/index.php/topic,8071.msg71738.html#msg71738
  http://www.secretprojects.co.uk/forum/index.php/topic,4819.msg38076.html#msg38076
  
• Inflatable glider
  http://www.secretprojects.co.uk/forum/index.php/topic,17784.msg169850.html#msg169850

 

[hesham]

Great reference,thank you Stargazer.

 

[Stargazer]

More Grokhovskii designations explained for your enjoyment... The guy was quite eclectic! (some of the material in this thread will likely be rearranged later between this and the Designations section...).



G-1A

This type is mentioned here in passing (no further details I'm afraid):
http://www.rusproject.org/node/1176



G-2 to G-8 (containers)

The G-2 was a 1931 cigar-shaped cardboard container with a 3.5-meter diameter parachute at one end, able to carry loads up to 30 kg — like six rifles and 5,000 rounds of ammunition, for instance. It was accepted into service under the designation PG-2k. An R-5 biplane could carry ten of these "cigars":
The G-3 was a soft "air bag" container that stacked three 76-mm artillery shells or three light DP machine guns or three boxes of machine-gun belts. It was discharged with the same parachute as the G-2. After state, the G-3 started production under the designation PDMM.


In 1932, the G-4 (soft bag) and G-5 (hard oval-shaped plywood container) were both designed for 150-160 kg of cargo. In the same year the G-6 (for 80 kg) and the G-7 (for bulky cargo) were introduced, as well the G-8 cardboard cylinder (for food).

http://vk.com/wall188878539_67


G-9

Grokhovskii thought about how to improve the mobility of the troops on the ground. In October 1932 he supplied the Air Force with the G-9 system, which consisted of two "Harley-Davidson" motorcycles hung up on the bomb racks under the wings of an R-5 biplane.
Each bike was put in a special frame and was equipped with two parachutes (collectively weighed 656 kg). More here:
http://vk.com/wall188878539_67

The G-9 is also mentioned here, along with the GN-4:
http://www.airforce.ru/history/chronology/1934.htm




G-11

A Grokhovskii (?) G-11 is mentioned here:
http://www.rusproject.org/node/1176



G-31

The G-31 is also given as the G-3-1 here, though I don't know if it was a redesignation:
http://www.airforce.ru/history/chronology/1932.htm



G-55

Finally, The G-55 designation applied to a system consisting in dropping miles of telephone wiring in a container from an R-5 aircraft. The system was tested successfully in 1935 and later designated as PRK-5, PRK PRK-10-30:
http://lib.rus.ec/b/208974/read




GN°4 and GN°8

The GN°4 five-seat glider (apparently the same as GN-4) and GN°8 (a four-seat glider designed to be towed behind a fighter) are described here:
http://www.ljpoisk.ru/archive/3766292.html

It is also mentioned here (as the GN-4):
http://www.rusproject.org/node/1176

 

[Cy-27]

A fine batch of Grokhovski types, all of which are new to me.

Many thanks Stargazer!

 

[Stargazer]

Another "G-26" for you... :

The rapid development of aviation in pre-war years literally caused a flood of various proposals and inventions, among which was that of the flying car. This idea attracted P. Grokhovskii, a self-taught inventor who had emigrated from Eastern Europe to the Soviet Union. But while these new exotic vehicles were offered for public use overseas, things were taken more seriously in the USSR.

A "Flying Car", Grohovskii wrote, "can be used for scooping agents to enemy territory. Couriers and communications experts will provide rapid deployment of correspondence and fast installation of communication and intelligence gathering. In a civil air fleet, the flying car will undoubtedly be of widespread use. This work should be considered experimental. After verification of the design and preparation of preliminary positive results, the possibility of applying to existing types or new-built tanks remains open."

According to the estimates of the experimental institute headed by Grochovskii, a G-26 flying car could be designed on the basis of a "Ford" model 1934 car, which presented acceptable aerodynamic and weight characteristics. According to a report on the activities of the P. Grochowskii experimental institute for 1935, it would be powered by two M-11 motors, with wing fuel tanks attached to the roof of the car. Management "tailless aircraft" was to be done with the wheel of the second seat. According to Grochowskii's plans, the wing module would separate from the car after landing on a freeway and the passengers would drive on without arousing suspicion.

The inventor also foresaw that, by testing the G-26, he would be able to create long-distance travel for winged tanks. However, all the attempts to create a flying car in the USSR failed — while they didn't get further than prototypes abroad.

From Krylia Rodine, April 1998

 

[Stargazer]

Fixed a couple of mistakes:

• transfered relevant posts on the G-11 to the Gribovskii designations thread
• removed the DG-56 from the list of links (it was a Grigorovich design, NOT a Grokhovskii)

Thanks a lot to you all and sorry about that!

 

[Grey Havoc]

A "Flying Car", Grohovskii wrote, "can be used for scooping agents to enemy territory. Couriers and communications experts will provide rapid deployment of correspondence and fast installation of communication and intelligence gathering. In a civil air fleet, the flying car will undoubtedly be of widespread use. This work should be considered experimental. After verification of the design and preparation of preliminary positive results, the possibility of applying to existing types or new-built tanks remains open."

According to the estimates of the experimental institute headed by Grochovskii, a G-26 flying car could be designed on the basis of a "Ford" model 1934 car, which presented acceptable aerodynamic and weight characteristics. According to a report on the activities of the P. Grochowskii experimental institute for 1935, it would be powered by two M-11 motors, with wing fuel tanks attached to the roof of the car. Management "tailless aircraft" was to be done with the wheel of the second seat. According to Grochowskii's plans, the wing module would separate from the car after landing on a freeway and the passengers would drive on without arousing suspicion.

So basically, this was a project undertaken on behalf of the NKVD/GUGB?

 

[Stargazer]

I was more under the impression that it was looked into as a private venture (if any such thing could exist in Stalinist Russia!).

 

[igor-mich]

Clarifications of small (G-31 glider had initial designation G-63)

 

[papacavy]

Does anyone have a date for that Grokhovsky "Flying Bullet" experimental project?

 

[borovik]

More Grokhovskii designations explained for your enjoyment... The guy was quite eclectic! (some of the material in this thread will likely be rearranged later between this and the Designations section...).
G-11

A Grokhovskii (?) G-11 is mentioned here:
http://www.rusproject.org/node/1176

[/size]

There it is a glider Gribovskiy G-11 (G-29), in the article mentioned Grokhovsky as one of the first who proposed the use of a glider in military affairs (and referred to as Peter, aсtually Paul Grokhovsky/ Павел Гроховский[/size])

 

[borovik]

GN°4 and GN°8

The GN°4 five-seat glider (apparently the same as GN-4) and GN°8 (a four-seat glider designed to be towed behind a fighter) are described here:
http://www.ljpoisk.ru/archive/3766292.html

It is also mentioned here (as the GN-4):
http://www.rusproject.org/node/1176

this gliders design G.F. Groshev, they differed in the use of the designation after the letters G = Г a label number №
that is not GN-4, correct G№-4 (or G#4)

 

[Stargazer]

this gliders design G.F. Groshev, they differed in the use of the designation after the letters G = Г a label number №
that is not GN-4, correct G№-4 (or G#4)

That was my impression too, but I'm glad you can confirm it!

One question: sites sometimes refer to Grokhovskii, other to Groshev, as you just did. Why two forms? Does it have to do with his not being Russian originally? Was his name "Russianized" at some point? Thanks for your help!

 

[Cy-27]

Overview

Pavel Ignatyvich Grokhovski was born in 1879 in the Vyazama region. He was from a family of exiled Poles. In the Great War he served with the Russian Baltic Fleet and participated in the storming of the Winter Palace. After 1918, he joined the VVS.

In 1929 P.I. Grokhovski began experiments with parachutes for freight delivery. Before the Russian Revolution, the Balloon Workshop in Moscow experimented with a cotton-paper fabric called Percale, with a view to using the material as a replacement for linen in the covering of aircraft. In 1930 Grokhovski suggested that Percale could be used instead silk, which was expensive and not readily available and used in the manufacture of parachutes. Although not as resilient as silk and broke down more easily over time, the material was used for one-off parachute use. Ever the practical observer, Grokovski also recommended a special boot for parachutists with an air-sole to cut down on the number of ankle injuries being incurred by paratroops upon landing. As well as Percale, Grokhovski also experimented with plywood parachutes which were cheap but bulky to handle. in the summer of 1930 Grokhovski took part in experiments on para-dropping with a Tupolev TB-1.

In 1931, a team headed by Grokhovsky and Blagin were put in charge of the NII VVS design department to improve airborne assault delivery methods. The specific role of the organisation was in materiel delivery systems from the air.

Very soon Grokovski's organisation became a OskanByuro - Special Deign Bureau - of the VVS and produced many suggested delivery methods for men, equipment, supplies and even tanks. It developed its own flight test unit with test pilots who included V.P. Chkalov and M.S. Kaminski. Many of the experiments were undertaken by Grokhovski himself and soon the OskanByuro was nicknamed "Grokhovski's Circus".

In 1934 the organisation had been absorbed into the Commissariat for Heavy Industries (NKTP).

Most of his designs related to airborne delivery methods and the design G- numbers do not necessarily flow in a chronological order.

Designations not mentioned previously....

G-21
Based on the Aerobus concept (see G-68) and could carry a 125 kg load. One could be carried under each lower wing of an R-5.
G-40
A 80 kg load could be carried by this container which utilised a Gauze parachute, developed from the G-39.
G-41
A 160 kg load capacity container which used a Gauze parachute.
G-43
A delivery system to drop a T-27 or Carden-Lloyd light tank into an assault zone by TB-1. The tanks were reduced in weight down to around 344 kg (involving draining of all liquids, ammunition and armament. In service it was designated PD-T.
G-48
Design for a maritime Aerobus to be dropped by a Tupolev TB-1 as very low level. The container doubled as a motorboat with a capacity for 14 troops and a Maxim machine-gun. Tested briefly until destroyed when making contact with the water.
G-51
Project for a freight platform based on the Aerobus concept, but rejected as too dangerous. the plan was for this device to carry a load between 750 kg and 1,000 kg.
G-58
Specialised dog-drop container, Each R-5 biplane could carry 6 such container. Experiment with a live dog (lured into the container with meat) were successful.
G-63
A glider design overseen by B.D. Urlapov in the summer of 1932. Designed to carry 17 troops and 500 kg of freight. Troops lay in the thick section of the wing, believed to be the first dedicated cargo glider.
G-64
A fifty seat or dedicated cargo glider. Towed by an R-6 tug or Tupolev TB-1. No proceeded past the design phase as there was no governmental backing for the project.
G-68
Design for a cabin to be dropped, at low level, with no parachure. Project was known as the "Summer Aerobus". It was described as being a short wing with a thick aerofoil and had a pair of aircraft wheels at the front and a pair of metal skids and shock absorbers at the rear. Then released from the mothership it was to glide at a steep angle and land on its wheels. It was envisaged that this delivery method would be used in the first stage of an air assault. Could carry four passengers, tested at least twice on land, no people on board, with a successful outcome. Once P.I. Grokhovski and I.V.Titov allegedly trialed the device in flight. Titov suffered loss of consiousness for a short period but both survived!
G-76
Based on the G-68 this development was known as the "Winter Aerobus" as it was fitted with skis for landing on snow. an initial assualt carrier. Tested and destroyed in trials.


Source: The Red Star Airborne Operations by Vladimir Kotyelnikov [Avia Master] August 2004


Pictures:

P 3 - Grokhovski on the cover with TB-1 container carrier
P 8 - Carden Lloyd light tank with Ordzhonikidze / Turkhazhevski / Grokhovski
P16 - G-37

 

[Stargazer]

Fantastic additions Cy-27, as usual! (but the G-40, G-41 and G-63 already WERE mentioned in the thread... )

 

[hesham]

Wow,you are my hero Cy-27.

 

[Cy-27]

Fantastic additions Cy-27, as usual! (but the G-40, G-41 and G-63 already WERE mentioned in the thread. )

Apologies- too many G's !

Do you think this thread should be bundled at some point into Designations?

 

[Stargazer]

Fantastic additions Cy-27, as usual! (but the G-40, G-41 and G-63 already WERE mentioned in the thread. )

Apologies- too many G's !

Do you think this thread should be bundled at some point into Designations?

I'm definitely considering, if not a move, perhaps a split with the appropriate cross-links in-between...

 

[Cy-27]

While looking for some Bartini details I found this images that, although poor quality, show the diverse range of parachute delivery methods evolved by Grokhovski.

- PI Grokhovski testing a Percale parachute.
- Delivery of a motorcycle and sidecar combination by bomber.

Source:
The Bridge Over Time by I Utchko (Politizdat) 1989 ISBN 5250008054

 

[borovik]

Eclectic works Grokhovski explained by the specific /Осконбюро, или ОКПБ - Особое конструкторско-производственное бюро ВВС РККА./ - Oskonbyuro or OKPB - Special Design and Production Office of Air Force. Since 1934 - / Экспериментальный институт Наркомтяжпрома по работам РККА / - Experimental Institute of the People's Commissariat heavy industry for the work of the Red Army, which he led. For some time the head of the KB-29 (1937), then a few years he was head of business management CS Osoaviahim.
In the collage I brought only a few (seemingly mutually exclusive) inventions Grokhovski.
As a friendly cartoon to work Oskonbyuro would fit well caricature S.Mott

All projects related to aviation developed under his leadership, but in conjunction with other designers: V.Rentel, B.Urlapov, P.Ivenson, S.Kozlov, V.Bolhovitinov, A.Kaminov, V.Korovin ...

Also an article from a magazine cover is placed @ Cy-27 (Reply # 23) can be read entirely here:
http://desantura.ru/articles/16/?SHOWALL_1=1

@ Igor-mich previously gave this link.

 

[hesham]

Beautiful designs my dear Borovik.

 

[Stargazer]

Excellent contribution, borovik! Thank you so much. Thanks to our collective efforts on this topic, the name Grokhovskii will hopefully be known better than for just a project or two!

 

[borovik]

The heavy transport glider G-64 (Designer B.Urlapov) - can accommodate fifty people, so to speak, was a multiple increase in the centerplane G-63. The designer really justifies the possibility of creating a whole aero-trains. By the powerful four-engined aircraft are fixed not one or two but eight gliders. Thus, one plane throws to the back of the enemy of 400 paratroopers. Precise data on the airframe not.
Also, little information is retained on the tow plane.
Transport and combat aircraft -universal/wagon. (presumably the designer V.Rentel)
Identification is not known.
It was supposed to use the plane in five or six versions, Suspended cabine for various purposes: cargo, passenger, paraborne, agitation/propaganda and military, armed with four machine gun turrets and bomb racks ...

 

[Stargazer]

Very nice, once again, borovik! Images show slightly different configuration of vertical tails: in one image they are to the rear of the outermost windows, while in the other they seem to be in the axis of the wing step (where you also put them in your plan).

 

[hesham]

OH my God,


you made my day my dear Borovik,thank you very much.

 

[Retrofit]

Thanks Borovik for the information on the G-64 flying wing transport glider.

Concerning Grokhovski projects, in the "Russian Aviation Museum" website concerning the Cucaracha (http://ram-home.com/ram-old/g-39.html), it is mentioned the following:

"Despite the failure of 'Cucaracha', tailless aircraft found it way into officially approved bureau plans. Of course, it was stripped of ramming armament and VTOL capability. It became a 4-passenger plane with 100hp engine and speed of 220km/h. New aircraft had to be built in 2.5 months (!) and participate in All-Union overflight organized by newspaper 'Pravda', TsK VLKSM and TsK Osoaviakhim. Contract with 'professors' was not renewed, .designer('grokhovskij')]P.I.Grokhovskij decided to rely on his own team. "http://www.secretprojects.co.uk/forum/javascript:parent.frames[2

Was this "4-passenger plane with 100hp engine" a Grokhovski product or from another design office?[url=http://www.secretprojects.co.uk/forum/javascriptarent.frames[2]

 

[borovik]

In March 1935, Grokhovski commissioned to Urlapov design and build a five-month period of light passenger aircraft - a tailless, increased wingspan and fixed (with respect to G-39), a low-power engine M-11, cockpit with five people including the pilot.
The project is owned by "Experimental institute" Ministry of heavy industry in Leningrad i.e. Grokhovski.
Information about it was in the magazine "Самолет"/"Airplane" # 6, 1935
and in the book "Heaven remembers" V. Kazakov ,1988.
Image, no other data.

 

[hesham]

Hi,


here is a drawings to Grokhovski G.31 & G.63 gliders and aircraft.

Десантные планеры Сталина 1930-1955 гг. "С неба - в бой!"

 

[Granit]

- PI Grokhovski testing a Percale parachute.

It Grochowski wife after the jump.

 

[hesham]

Hi,


What was this,I can't ID it well,and I have a drawing to flying tank by Grokhovski ?,I know the translation
said : it was imagine from the author,but was it real ?.


http://fs1.uclg.ru/books/pdf/1391961921_ya_poznau_mir_aviachia_i_vozduhoplavanie.pdf