The DASH-7 was only built in modest numbers, though it did prove useful as a military surveillance platform. This requirement dictated a design that had good short-field capability and a low noise signature.
Construction of prototypes began in latewith the first of two prototypes taking to the air on 27 7 dash dash with DHC chief 7 dash dash pilot Robert H. Fowler at the controls. The type received Canadian certification in the spring ofwith the first production aircraft flying shortly afterwards. The first customer delivery was in 7 dash dash The propellers were wide, with a diameter of 3. With these features, the DASH-7 could take off and land in less than meters 2, feet -- in fact, it is said it could take off at a 7 dash dash that would leave most passengers thinking they'd left their stomachs back on the runway.
In contrast to the DASH-7, a Boeingwhich had a degree of short-field capability in the form of thrust reversers and triple slotted flaps, required about 1, meters 4, feet for takeoff and landing. The DASH-7 7 dash dash tricycle landing gear, all assemblies with single wheels, the main gear retracting forward into the inboard engine nacelles and the nose gear retracting backward. The DASH-7 featured pneumatic de-icing boots on wings and tailplane; presumably the windshield and engine intakes were electrically de-iced.
Avionics kit was conventional, with a 7 dash dash radar in the nose as standard. Passengers got in and out through an "airstair" door on the left rear, with an emergency exit opposite, 7 dash dash an emergency exit on each side behind the 7 dash dash. The aircraft featured a toilet and galley, plus a baggage compartment in the rear, with the compartment door to the rear of the passenger door on the left side of the fuselage.
A complementary "DHC" version was also produced, with a cargo door with dimensions of 1. In the all-cargo role, total volume was 9. A roller system could be installed on the floor to ease cargo handling. Other variants were considered but never built.
It is now out of production, though Viking Air has obtained rights to the design. One well-known commercial operator was Air Greenland, with its handful of 7 dash dash proving useful in handling the small airfields and rough climate conditions found in the region. The United 7 dash dash has also made use of DASH-7s, finding them handy for their ability to operate out of small airfields near disaster zones -- 7 dash dash these machines chartered from commercial firms.
A few DASH-7s were obtained by military and government organizations. Two were used by the Canadian Armed Forces under the designation of "CC"; they were more or less conventional passenger-cargo machines.
This machine was eventually fitted with a second "cockpit" for observers, perched on top of the forward fuselage; as well as a side-looking airborne radar SLARwith the radar antenna in a fairing along the lower left side of the fuselage. It could also drop flares and rescue gear. In the early s, the US Army Southern Command SOUTHCOMwith its domain 7 dash dash responsibilities in Latin America, determined a need for a "low profile" intelligence platform to participate in counter-drug operations and other missions that fell outside of the Army's traditional battlefield operations role.
The DASH-7 was an excellent choice for the mission. The DASH-7 coupled good endurance and load-carrying capacity with very good short-field 7 dash dash. Besides, it looked like a civilian airliner and made relatively little noise, which fit the Army's need for an aircraft that didn't attract attention.
In any case, along with surveillance gear, the ARLs were fitted with selective kevlar armor and a defensive countermeasures system, with the countermeasures suite including a 7 dash dash warning unit, a missile warning unit, and chaff-flare dispensers. The ARLs were used in the Haiti intervention inBosnian peacekeeping duties, operations against drug producers and smugglers, and in support of disaster relief operations.
The first two EO-5Cs were delivered in the fall ofand were deployed to Korea to observe North Korean military activities. More EO-5Cs were delivered in the following years. The EO-5C carried a crew of pilot, copilot, and four systems operators. The electronics systems were highly automated to reduce crew workload.
While it didn't have nearly the capabilities of these two larger Boeing four-jet intelligence platforms, the EO-5C was adequate for low-intensity missions, and much cheaper to operate. The EO-5C could typically operate for 7. The EO-5C's sensing and comlink capabilities permitted realtime targeting of adversary assets, allowing ground forces 7 dash dash react quickly to distant threats.
Intelligence collected by space satellites could take up 7 dash dash three days to reach its ultimate users, but battlefield commanders down to the battalion level could obtain near-realtime SAR-MTI displays from the EO-5C to give them a view of their tactical environment. The EO-5C, while hardly invisible to radar or other sensors, adopted a clever kind of "stealth" of its own.
The aircraft's "Low" designation implied "low profile", and it was rigged in such a way as to attract little attention. There wasn't much in its external appearance to distinguish it from an ordinary DASH-7, since most of the antennas and other sensors were retractable. It was painted to look like a commercial airliner, with military markings kept to a discreet minimum. The name "Crazy Hawk" has been associated with the ARLM, though that may have been simply the name of a mission the type was assigned to.
All on board, including both US Army and Colombian military personnel, were killed. The incident revealed both the use of the aircraft in low-profile military 7 dash dash and the US involvement in the guerrilla war in Colombia. Three of the EO-5Cs were deployed to Korea to keep an eye on North Korean military activities north of the demilitarized zone.
The fleet is expected to remain in service up to The Army has 7 dash dash in a confusing state of flux over where the service's surveillance fleet is going over the long run; it appears that the current plan is to replace the DASH-7 ARLs with enhanced platforms based on the DASH-8 airliner, described immediately below.
The formal launch decision for the DASH-8 was made inwith four preproduction aircraft built: It had an obvious resemblance to the DASH-7, with a high wing, tee tail with fin fillet, and roughly similar landing gear arrangement, but there were many detail differences, most notable a shorter and more steeply sloped nose.
The turboprops were electrically started, and drove four-bladed reversible Hamilton Standard props. The Series featured tricycle landing gear, with twin wheels on all assemblies.
The electrically-steered nose gear retracted forward, the main gear retracted backward -- not forward as with the DASH-7 -- into the engine nacelles, with the gear featuring an anti-skid braking system. All the flight surfaces and the engine intakes featured pneumatic de-icing boots; props and air data sensors were electrically de-iced.
Avionics included, along with typical gear such as radios and radio navigation gear, color weather radar and a digital flight control system, with the cockpit featuring a Honeywell Electronic Flight Information System EFIS.
A head-up display HUD was optional. There was a crew of pilot, copilot, and flight 7 dash dash, plus seating for 36 passengers in rows of four. There was a single galley and a toilet, with a baggage compartment in the rear. Of course, the aircraft was pressurized and climate-conditioned. The NVS was an "active" noise and vibration cancellation system, involving a set of microphones to pick up noise, with a processor then analyzing the noise and activating a set of transducers in "reverse phase" to cancel out the 7 dash dash.
Avionics in later production was updated, most notably with the addition of 7 dash dash optional Global Positioning System GPS satellite navigation system receiver. The Series went out of production in It was effectively a Series A machine 7 dash dash extended wingtips and two fuselage plugs extending the aircraft's length by 3. Work began in on a further enlarged variant, the "Series Q", with a 6.
It featured a flight deck developed by Thales with five color flat-panel displays. Initial flight of the first of four Series prototypes was on 31 Januarywith introduction to service in Seating arrangements for the DASH-8 Q included 70, 74, or 78 passengers in a single-class arrangement, or 72 passengers in a two-class arrangement, with ten business seats forward. There were "airstair" passenger doors fore and aft on the left side of the aircraft, with the rear door forward of the baggage door; there were emergency exits on the right side of the aircraft opposite the passenger doors.
Bombardier has introduced a "Q NextGen" variant, the primary improvements being a modernized interior featuring LED lighting, and an updated avionics suite, provided by 7 dash dash. The first article was rolled out in InBombardier delivered 7 dash dash first Q Combi variant, capable of hauling up to 4, kilograms 9, pounds of cargo, along with typical seating for 50 passengers in the forward 7 dash dash.
With plenty of early-production DASH-8s still in service, Field Aviation of Toronto has been offering "glass cockpit" upgrades to replace the old "steam gauge" cockpits, with a number of airlines taking them up on 7 dash dash offer.
The US Army also flies special-mission DASH-8s with various sensor fits, some with an elongated nose with an imaging turret underneath. It is unclear if these six have anything to do with the ARL-E requirement. They were also fitted with observation 7 dash dash and a hatch for dropping rescue kit.
They were later complemented by five more machines, three of them Series variants with additional fuel capacity for longer patrol endurance. The fleet has received updated SeaVue radar, a modernized imager turret, and other updated avionics.
There are some variations in kit for different customers, but in general the Field MSA conversions feature:. The US State Department operates Dash-8s modified by TKC Aerospace of Alaska, featuring packs under the nose and the belly, the nose pack featuring windows to the front and the belly pack with windows to each 7 dash dash not 7 dash dash is known about these machines, but they are apparently operated both as transports and in anti-narcotics operations, the packs presumably being used for mapping 7 dash dash.
It will have surface search sensors, including radar and emitter location systems, plus antisubmarine sensors, including magnetic anomaly detector and sonobouys. The effort was driven by a British requirement to 7 dash dash the UK's maritime patrol fleet.
However, the British chose to obtain the Boeing P-8 Poseidon, a maritime patrol derivative of the jetliner. Finally, two used Q machines were converted to a "water bomber" configuration by the French Securite Civile to fight 7 dash dash.
They feature a belly tank, but can also be used for personnel transport. I can't figure out if any machines were ever built in such a configuration -- it's a bit hard to understand what the point of it would have been -- and it appears that this misunderstanding was due to early drawings released by DHC, or some artist who just got it wrong.
I reserve all rights to my writings. However, if anyone does want to make use of my writings, just contact me, and we can chat about it. I'm lenient in giving permissions, usually on the basis of being properly credited. As the history above suggests, this document started life 7 dash dash part of a general document on battlefield surveillance aircraft.
I finally decided that the single document didn't make sense and split it into documents on the individual aircraft.
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