Del Mar helicopters

Jemiba

Moderator
Staff member
Top Contributor
Senior Member
Joined
11 March 2006
Messages
8,598
Reaction score
2,997

Attachments

  • Del_Mar_light_helicopter_01.jpg
    Del_Mar_light_helicopter_01.jpg
    51.1 KB · Views: 470
  • Del_Mar_light_helicopter_02.jpg
    Del_Mar_light_helicopter_02.jpg
    102.1 KB · Views: 439
Found this this is new one for me.

The ultimate evolution of theDelMar helicopters was the tandem-rotor DH-20. Conceived as a super-portable medical evacuation helicopter, the DH-20 was powered by twin turbine engines and designed to carry a pilot and two passengers, or a pilot and one passenger in a litter. Remarkably, the entire helicopter was able to fold up for ground, sea or air transport, and was capable of operating in and out of far smaller landing zones than a traditional helicopter. As testing of the DH-20 continued, however, the requirement for such missions declined, and the aircraft was never put into production or flown operationally.
 

Attachments

  • dh-201.jpg
    dh-201.jpg
    257.3 KB · Views: 299
Had a smaller version of this picture. Thanks a lot for sharing!
 
Soem pictures of the DH-1 "Whirlymite" from "der Flieger", Januray 1963. The drawing
shows the dynamic/propulsion part only, without seat or landing gear
 

Attachments

  • Del_Mar_DH-1_03.jpg
    Del_Mar_DH-1_03.jpg
    49.5 KB · Views: 108
  • Del_Mar_DH-1_02.jpg
    Del_Mar_DH-1_02.jpg
    62.2 KB · Views: 146
  • Del_Mar_DH-1_01.jpg
    Del_Mar_DH-1_01.jpg
    53.6 KB · Views: 159
I found some more pics for the DH-20
522b-iumkapw4611471.jpg
3754-iumkapw4611519.jpg
071a-iumkapw4611630.jpg
0488-iumkapw4611743.jpg
223d-iumkapw4611928.jpg
331f-iumkapw4611822.jpg
IMG_1267.jpg
IMG_1248.jpg
One of the neat things about this little machine is its transmission system,it uses 2 rubber gilmer type toothed belts to drive the rear rotor and also the front rotor via a drive shaft.Very neat and simple.
IMG_1249.jpg
Heres a video of the machine in a museum
And heres a link to an image gallery of the machine in question in its museum.
http://svsm.org/gallery/dh20

Theres also a gallery of the DHT-2
http://svsm.org/gallery/dht2
IMG_9283.jpg
IMG_9319.jpg

Theres a video showing the machine operating in tethered mode attached to its mobile landing pad,interestingly the pad itself has a motor driven fan under it which allows it to generate an air cushion,this allows it to move with the tethered helicopter during flight training.Quite a neat concept for a microlite trainer.

And heres a really strange one,its an 7/16th scale bell 205 body mounted onto the frame of an unmanned DH-1 for use as a remote operated AA training target.
Bk8D1UuCYAAO6aH.jpg
353-1.jpg
 
Last edited:
Thank you Sineva,

but I don't know if DH-2 was the same as DHT-2 or not ?.
 
Thank you Sineva,

but I don't know if DH-2 was the same as DHT-2 or not ?.
I`m not sure that theres really any difference between the DH and DHT apart from the air cushioned landing pad with its tether for pilot training.If you mean the difference between the DHT-1 and DHT-2,then the main difference would be the powerplant which is now a turbine.
213-2.jpg
Heres the original DHT-1 with its 6cyl opposed piston engine.
 
Thank you Sineva,

and a large numbers are missing from its series,we know only DH 1 & 2,from 3 to 15 are not recognized,DF-16 Flare was a target,and DH 17 to 19 also nothing ?.
 
Last edited:

Attachments

  • Del Mar DH-1A on DHT-1 MAN Coll.jpg
    Del Mar DH-1A on DHT-1 MAN Coll.jpg
    3.2 MB · Views: 92
Last edited:
Hi,

the Del Mar DW-10 was a pilotless vehicle,with expandable powered,1959.
 
From Air Pictorial 1961,

what was Del Mar Radop towed-target ?.
 
From Air Pictorial 1961,

what was Del Mar Radop towed-target ?.

I think maybe a picture got lost.

Among other things, Del-Mar made towed radar-optical (Radop) targets for aerial gunnery training.


By the mid-1960s, the company had become a leading U.S. Defense Department prime contractor in the development and production of aerial tow target systems for weapons training, and instrumented ground targets for scoring air-to-ground automatic weapons delivery. It also produced helicopter target drones and helicopter flight trainers for the U.S. Army.
 
From Air Pictorial 1961,

what was Del Mar Radop towed-target ?.
That looks like a post which would link to an article but there isn't one, so I have a question about the post, is it a link or a question?

As for it being a question, playing in Google found a court case of the manufacturer versus the US government,

"

Del Mar Engineering Laboratories v. United States, 524 F.2d 1178 (1975)​


Oct. 22, 1975 · United States Court of Claims · No. 27-71

524 F.2d 1178

DEL MAR ENGINEERING LABORATORIES v. The UNITED STATES

United States Court of Claims.


*1179J. B. McGuire, Los Angeles, Cal., attorney of record, for plaintiff.


Donald E. Townsend, Washington, D. C., with whom was Asst. Atty. Gen. Rex E. Lee, for defendant.


Before COWEN, Chief Judge, and DAVIS and NICHOLS, Judges.


OPINION


PER CURIAM:


This case comes before the court on defendant’s motion, filed June 13, 1975, moving that the court adopt as the basis for its judgment in this case the recommended decision of Trial Judge Hal D. Cooper, filed April 28, 1975, pursuant to Rule 134(h) since plaintiff has failed to file a timely notice of intention to except thereto. Upon consideration thereof, without oral argument, since the court agrees with the trial judge’s recommended decision, as hereinafter set forth, it hereby affirms and adopts the same as the basis for its judgment in this ease. Therefore, it is concluded that plaintiff is not entitled to recover and the petition is dismissed.


OPINION OF TRIAL JUDGE


COOPER, Trial Judge:


Plaintiff, under 28 U.S.C. § 1498, seeks reasonable and entire compensation for the alleged unauthorized use and manufacture by or for the United States of an invention described in claims 1 to 7, inclusive, of United States Letters Patent No. 2,869,120, entitled “Tow Target Having Combustion Signal Means.”
"
 

Similar threads

Back
Top Bottom